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The Korean endings 「-더라도」 and 「-아/어도」 can both mean “even if,” but 「-더라도」 generally conveys stronger concession. It places particular emphasis on the fact that a decision or requirement remains unchanged even under unfavorable conditions. 「-아/어도」, on the other hand, is suitable for general concessions and everyday habits, and can also describe events that have already occurred.

For example, both 「비가 와도 가요」 and 「비가 오더라도 가요」 mean “I'll go even if it rains.” The first simply states that rain will not affect the plan. The second suggests that the speaker has already considered the inconvenience rain might cause and still intends to go. These forms should not be rigidly divided into spoken and written language, nor does using 「-더라도」 necessarily indicate stronger determination.

Beyond nuance, the two endings also differ in conjugation and tense. With 「가다」, the respective forms are 「가도／가더라도」, while 「먹다」 becomes 「먹어도／먹더라도」. The two endings are especially not freely interchangeable when recounting events that have already happened. The following sections compare their conjugation rules, usage contexts, and tense restrictions through examples, and explain why 「-아/어도 되다」 cannot simply be replaced with 「-더라도」.

What's the Difference Between the Korean Endings 「-더라도」 and 「-아/어도」?

The Korean endings 「-더라도」 and 「-아/어도」 are both connective endings expressing hypothetical conditions or concession. They are commonly translated as “even if,” “even though,” or “still … despite …,” depending on the context. Both can indicate that a particular condition does not change the outcome, but 「-더라도」 generally conveys a stronger sense of concession than 「-아/어도」.

「-아/어도」 is suitable for general conditions, daily habits, and events that have already occurred. 「-더라도」 places greater emphasis on the fact that an existing decision, requirement, or judgment remains valid despite unfavorable circumstances. For example, both 「비가 와도 가요」 and 「비가 오더라도 가요」 mean that the speaker will go even if it rains. The former simply communicates the plan, while the latter more explicitly treats rain as a condition that could present an obstacle.

Another difference lies in the tense of the main clause. 「-아/어도」 can naturally describe events that have already occurred, whereas 「-더라도」 has a stronger hypothetical quality and is generally unsuitable for directly recounting confirmed past events. Therefore, it is important to consider not only the strength of the concession but also whether the sentence describes a past fact or what someone would do under a hypothetical condition.

• Example: 비가 와도 가요.
  Romanization: bi-ga wa-do ga-yo.
  Translation: I'll go even if it rains.
  「-아/어도」 indicates that rain will not affect the plan to go out. The tone is relatively matter-of-fact and does not particularly emphasize the inconvenience rain might cause.
• Example: 비가 오더라도 가요.
  Romanization: bi-ga o-deo-ra-do ga-yo.
  Translation: Even if it rains, I'll still go.
  Changing the ending to 「-더라도」 places greater emphasis on maintaining the original decision despite the inconvenience rain might cause. This does not mean that rain is certain; rather, the speaker is deliberately emphasizing that hypothetical condition.
• Example: 몸이 아파도 회사에 갔어요.
  Romanization: mo-mi a-pa-do hoe-sa-e ga-sseo-yo.
  Translation: I went to work even though I wasn't feeling well.
  The main clause 「갔어요」 describes an event that has already happened, so 「-아/어도」 is more natural. Changing the sentence to 「아프더라도 회사에 갔어요」 would sound unnatural when directly recounting a particular past experience of going to work.

How to Conjugate 「-아/어도」 and 「-더라도」: Verbs, Adjectives, and Nouns

Both 「-아/어도」 and 「-더라도」 can attach to Korean verbs and adjectives, but they follow different conjugation rules. With 「-아/어도」, the choice between 「아도」 and 「어도」 depends on the final vowel of the stem. Irregular verbs and adjectives must also undergo their respective changes. For example, 「가다」 becomes 「가도」, 「먹다」 becomes 「먹어도」, and 「춥다」 becomes 「추워도」.

The attachment pattern for 「-더라도」 is more consistent. Simply remove 「다」 from the dictionary form and attach 「더라도」, without changing the ending according to the stem vowel. Accordingly, 「가다」 becomes 「가더라도」, 「먹다」 becomes 「먹더라도」, and 「춥다」 becomes 「춥더라도」. When attaching these endings to nouns, the form involving 「이다」 must also be considered, as in 「학생이어도／학생이더라도」.

Attachment type	「-아/어도」 attachment pattern	「-더라도」 attachment pattern	Examples
Stem vowel is ㅏ or ㅗ	Stem + 아도	Stem + 더라도	가도／가더라도
Stem vowel is another vowel	Stem + 어도	Stem + 더라도	먹어도／먹더라도
하다 verbs and adjectives	하다 → 해도	하다 → 하더라도	해도／하더라도
ㅂ-irregular conjugation	Drop ㅂ and attach 워도	Attach 더라도 directly	추워도／춥더라도
ㅡ-deletion conjugation	Drop ㅡ and attach 아도／어도	Attach 더라도 directly	바빠도／바쁘더라도
Nouns with a final consonant	Noun + 이어도	Noun + 이더라도	학생이어도／학생이더라도
Nouns without a final consonant	Noun + 여도	Noun + 더라도	의사여도／의사더라도
Forms containing a past-tense marker	Stem + 았/었 + 어도	Stem + 았/었 + 더라도	늦었어도／늦었더라도

「-아/어도」 Conjugation ①: Choosing 「아도／어도」 Based on the Stem Vowel

「-아/어도」 attaches to verb and adjective stems, following a conjugation pattern similar to the standard 「-아/어요」 form. When the final vowel of the stem is 「ㅏ」 or 「ㅗ」, 「아도」 is generally used. With other vowels, 「어도」 is used instead. For example, 「살다」 becomes 「살아도」, while 「먹다」 becomes 「먹어도」.

However, the resulting form does not always retain 「아／어」 in full. The stem of 「가다」 already ends in 「ㅏ」, so it becomes 「가도」. With 「오다」, the vowels contract to form 「와도」. 「하다」 consistently becomes 「해도」. For ㅂ-irregular adjectives such as 「춥다」, 「ㅂ」 changes to 「우」, which then combines with 「어도」 to produce 「추워도」.

• Example: 비가 와도 가요.
  Romanization: bi-ga wa-do ga-yo.
  Translation: I'll go even if it rains.
  After removing 「다」 from 「오다」, the stem 「오」 combines with 「아도」 and contracts to 「와도」. It cannot be written as 「오도」.
• Example: 밥을 먹어도 배가 고파요.
  Romanization: ba-beul meo-geo-do bae-ga go-pa-yo.
  Translation: I'm still hungry even after eating a meal.
  The stem of 「먹다」 is 「먹」, whose final vowel is 「ㅓ」. Therefore, 「어도」 is attached to produce 「먹어도」.
• Example: 날씨가 추워도 밖에 나가요.
  Romanization: nal-ssi-ga chu-wo-do bak-kke na-ga-yo.
  Translation: I still go outside even when the weather is cold.
  「춥다」 is a ㅂ-irregular adjective. When 「-아/어도」 is attached, 「ㅂ」 is dropped and 「우」 is added, ultimately producing 「추워도」. It cannot simply be written as 「춥어도」.

「-더라도」 Conjugation ②: Attaching Directly to Verb and Adjective Stems

When attaching 「-더라도」, there is no need to distinguish between stems containing 「ㅏ」 or 「ㅗ」 and those containing other vowels. Nor is it necessary to choose a different ending based on whether the stem has a final consonant. Simply remove 「다」 from the dictionary form of the verb or adjective and attach 「더라도」. Examples include 「가다 → 가더라도」, 「먹다 → 먹더라도」, and 「예쁘다 → 예쁘더라도」.

The forms also differ for words that require irregular conjugation with 「-아/어도」. When 「-아/어도」 is attached to 「춥다」, the result is 「추워도」. With 「-더라도」, however, the stem retains 「ㅂ」, producing 「춥더라도」. The same applies to 「바쁘다」: the first form is 「바빠도」, while the second is 「바쁘더라도」, without dropping 「ㅡ」.

• Example: 비가 오더라도 갈 거예요.
  Romanization: bi-ga o-deo-ra-do gal geo-ye-yo.
  Translation: I'll still go even if it rains.
  After removing 「다」 from 「오다」, 「더라도」 is attached directly to produce 「오더라도」. There is no need to change 「오」 to 「와」 first.
• Example: 날씨가 춥더라도 밖에 나가요.
  Romanization: nal-ssi-ga chup-tteo-ra-do bak-kke na-ga-yo.
  Translation: Even if the weather is cold, I still go outside.
  「춥다」 takes 「더라도」 directly after the stem 「춥」, producing 「춥더라도」. Although 「춥다」 is a ㅂ-irregular adjective, it does not change to 「추워」 here.
• Example: 바쁘더라도 연락해 주세요.
  Romanization: ba-ppeu-deo-ra-do yeol-la-kae ju-se-yo.
  Translation: Please contact me even if you're busy.
  After removing 「다」 from 「바쁘다」, the stem 「바쁘」 is retained and 「더라도」 is attached to form 「바쁘더라도」. Unlike 「바빠도」, the 「ㅡ」 vowel is not dropped.

「-아/어도」 and 「-더라도」 Conjugation ③: Connecting to Nouns Through 「이다」

Nouns do not follow the same stem-conjugation rules as verbs and adjectives. Instead, they must connect through 「이다」. When 「-아/어도」 follows 「이다」, nouns with a final consonant generally take 「이어도」, while nouns without a final consonant take 「여도」. For example, 「학생이다 → 학생이어도」 and 「의사이다 → 의사여도」.

「-더라도」 can also attach through 「이다」. Nouns with a final consonant take 「이더라도」, as in 「학생이더라도」. With nouns that have no final consonant, 「이」 is generally omitted, and 「더라도」 is attached directly, as in 「의사더라도」. It is also possible to retain 「이」 and write 「의사이더라도」, but the shortened form is more commonly used.

• Example: 학생이어도 참가할 수 있어요.
  Romanization: hak-saeng-i-eo-do cham-ga-hal su i-sseo-yo.
  Translation: You can participate even if you're a student.
  「학생」 ends in the consonant 「ㅇ」, so 「-어도」 is attached through 「이다」 to form 「학생이어도」. It cannot be written as 「학생여도」.
• Example: 의사여도 모르는 게 있어요.
  Romanization: ui-sa-yeo-do mo-reu-neun ge i-sseo-yo.
  Translation: Even doctors have things they don't know.
  「의사」 has no final consonant, so 「여도」 is used when attaching 「-아/어도」, producing 「의사여도」. There is no need to write 「의사이어도」.
• Example: 학생이더라도 규칙은 지켜야 해요.
  Romanization: hak-saeng-i-deo-ra-do gyu-chi-geun ji-kyeo-ya hae-yo.
  Translation: Even if you're a student, you must follow the rules.
  Because 「학생」 has a final consonant, 「이」 from 「이다」 is retained before attaching 「더라도」, producing 「학생이더라도」. If the noun is changed to 「의사」, which has no final consonant, the form is generally written 「의사더라도」.

Both endings can also appear after past-tense markers such as 「-았/었-」, as in 「늦었어도」 and 「늦었더라도」. The attachment order is “stem + past-tense marker + connective ending.” It does not involve first conjugating the verb into a complete sentence-ending form such as 「늦었어요」 and then adding 「-아/어도」 or 「-더라도」. Whether the entire sentence can describe an event that has already occurred also depends on the tense and hypothetical nature of the main clause.

「-더라도」 vs. 「-아/어도」: Differences in Usage, Nuance, and Tense

Both 「-아/어도」 and 「-더라도」 express concession in Korean, but the difference between them is not always simply one of intensity. In addition to indicating that a general condition does not affect the outcome, 「-아/어도」 can describe everyday habits and events that have already happened. It can also combine with 「되다」 or 「괜찮다」 to express permission.

「-더라도」, meanwhile, is often used to introduce hypothetical conditions and emphasize that a decision, requirement, or judgment remains valid even under unfavorable circumstances. It also frequently appears with 「아무리」 to indicate that the outcome remains unchanged regardless of how extreme a particular condition becomes. However, these contexts are not mutually exclusive. Sometimes either ending can be used, with a difference in what the speaker chooses to emphasize.

「-아/어도」 Usage ①: A General Condition Does Not Affect the Outcome

One of the most common uses of 「-아/어도」 is to introduce a condition and then explain that the outcome will remain unchanged despite it. The condition may already exist or may be uncertain, and there is no need to emphasize how difficult it might be.

For example, 「지금 출발해도 늦어요」 means that leaving now will still result in being late. The condition of “leaving now” cannot change the outcome. This type of expression frequently appears in everyday conversation, discussions about schedules, and explanations of ordinary situations.

• Example: 지금 출발해도 늦어요.
  Romanization: ji-geum chul-bal-hae-do neu-jeo-yo.
  Translation: Even if you leave now, it's already too late.
  「지금 출발해도」 presents the condition of leaving now, while 「늦어요」 indicates that the outcome will still be arriving late. The degree of concession is not particularly emphasized.
• Example: 조금 비싸도 괜찮아요.
  Romanization: jo-geum bi-ssa-do gwaen-cha-na-yo.
  Translation: It's fine if it's a little expensive.
  「비싸도」 indicates that a somewhat higher price will not change the speaker's willingness to accept it. The sentence expresses an acceptable condition, so the stronger concession conveyed by 「-더라도」 is unnecessary.
• Example: 비가 와도 행사는 진행돼요.
  Romanization: bi-ga wa-do haeng-sa-neun jin-haeng-dwae-yo.
  Translation: The event will go ahead even if it rains.
  The first clause introduces the possibility of rain, while the main clause explains that the event's arrangements will not be affected. 「-아/어도」 communicates this plan in a straightforward manner.

「-아/어도」 Usage ②: Describing Daily Habits and Repeated Actions

「-아/어도」 can also describe everyday habits. The first clause introduces a situation that occurs regularly, and the main clause indicates that the usual behavior continues even when that situation arises.

These sentences often contain words such as 「매일 (every day)」, 「항상 (always)」, and 「보통 (usually)」. For example, 「피곤해도 매일 운동해요」 describes the habit of exercising every day even when tired. It does not necessarily express an especially firm commitment about the future.

• Example: 피곤해도 매일 운동해요.
  Romanization: pi-gon-hae-do mae-il un-dong-hae-yo.
  Translation: I exercise every day, even when I'm tired.
  「매일」 indicates a habit repeated daily, while 「피곤해도」 explains that this habit is generally maintained even when the person feels tired.
• Example: 바빠도 아침은 꼭 먹어요.
  Romanization: ba-ppa-do a-chi-meun kkok meo-geo-yo.
  Translation: I always eat breakfast, even when I'm busy.
  「바빠도」 introduces the condition of being busy, while the main clause describes the usual habit of eating breakfast. The sentence is about everyday behavior and does not necessarily carry a strong hypothetical nuance.
• Example: 날씨가 추워도 걸어서 출근해요.
  Romanization: nal-ssi-ga chu-wo-do geo-reo-seo chul-geun-hae-yo.
  Translation: I walk to work even when the weather is cold.
  「추워도」 indicates that cold weather does not affect the person's usual commuting method. Although the main clause uses the present-tense form 「출근해요」, it can be understood as a repeated habit in this context.

「-아/어도」 Usage ③: Recounting Events That Have Already Happened

「-아/어도」 can be combined with a past-tense main clause to describe something that happened despite an obstacle. In this case, both clauses concern established facts rather than an event that has not yet occurred.

For example, 「몸이 아파도 회사에 갔어요」 recounts an experience of going to work despite feeling unwell. Sentences of this kind generally cannot be changed directly to use 「-더라도」, because its stronger hypothetical quality makes it unsuitable for simply describing a completed event.

• Example: 몸이 아파도 회사에 갔어요.
  Romanization: mo-mi a-pa-do hoe-sa-e ga-sseo-yo.
  Translation: I went to work even though I wasn't feeling well.
  The main clause 「갔어요」 indicates that going to work actually happened, so 「-아/어도」 is more natural. The sentence is recounting a past experience.
• Example: 비가 와도 경기는 열렸어요.
  Romanization: bi-ga wa-do gyeong-gi-neun yeol-lyeo-sseo-yo.
  Translation: The match was held despite the rain.
  「열렸어요」 indicates that the match has already taken place. Since the sentence describes a past fact, 「-아/어도」 is appropriate.
• Example: 피곤해도 숙제를 끝냈어요.
  Romanization: pi-gon-hae-do suk-je-reul kkeun-nae-sseo-yo.
  Translation: I finished my homework even though I was tired.
  The first clause describes the person's tiredness at the time, while the main clause indicates that the homework was completed. Because the sentence recounts something that definitely happened, 「-아/어도」 is the more suitable choice.

「-아/어도」 Usage ④: Combining with 「되다／괜찮다」 to Ask for or Give Permission

「-아/어도」 can also combine with 「되다」 and 「괜찮다」 to form the common permission constructions 「-아/어도 되다」 and 「-아/어도 괜찮다」. These are generally translated as “may,” “can,” “be allowed to,” or “it's okay to.”

These constructions differ from ordinary concession. For example, 「여기 앉아도 돼요?」 asks whether sitting here is permitted; it does not emphasize continuing to do something despite sitting down. Therefore, the fact that both endings can express “even if” does not mean that 「앉아도 돼요?」 can simply be changed to 「앉더라도 돼요?」.

• Example: 여기 앉아도 돼요?
  Romanization: yeo-gi an-ja-do dwae-yo?
  Translation: May I sit here?
  「앉아도 돼요?」 asks whether sitting down is permitted. This is the permission use of 「-아/어도 되다」 and cannot be directly replaced with 「앉더라도 돼요?」.
• Example: 지금 들어가도 괜찮아요.
  Romanization: ji-geum deu-reo-ga-do gwaen-cha-na-yo.
  Translation: It's okay to go in now.
  「-아/어도 괜찮다」 indicates that an action is acceptable. Here, it simply means that entering now is not a problem, rather than emphasizing overcoming a difficulty.
• Example: 사진을 찍어도 돼요.
  Romanization: sa-ji-neul jji-geo-do dwae-yo.
  Translation: You can take photos.
  「찍어도 돼요」 indicates that taking photos is permitted. This type of construction is commonly used to ask about rules, check whether permission has been granted, or inform someone that an action is allowed.

「-더라도」 Usage ①: Keeping the Original Plan Despite Unfavorable Conditions

「-더라도」 is often used to introduce a hypothetical unfavorable situation and then state that the original plan or decision will remain unchanged despite it. Compared with the general use of 「-아/어도」, this construction places greater emphasis on the potential obstacle presented by the condition.

For example, 「비가 오더라도 갈 거예요」 means that the speaker intends to go even if it rains later. The speaker does not necessarily believe rain is highly likely, nor does the expression imply that serious problems will occur. Rather, rain is deliberately presented as a condition that could affect the trip, followed by a statement of the speaker's decision.

• Example: 내일 비가 오더라도 경기는 예정대로 열립니다.
  Romanization: nae-il bi-ga o-deo-ra-do gyeong-gi-neun ye-jeong-dae-ro yeol-lim-ni-da.
  Translation: Even if it rains tomorrow, the match will take place as scheduled.
  「비가 오더라도」 presents rain as a condition that could affect the match. The main clause emphasizes that the event's arrangements will remain unchanged.
• Example: 결과가 달라지더라도 사실대로 말하겠습니다.
  Romanization: gyeol-gwa-ga dal-la-ji-deo-ra-do sa-sil-dae-ro mal-ha-get-seum-ni-da.
  Translation: Even if the outcome changes, I will tell the truth.
  「달라지더라도」 assumes that the outcome might change, while the main clause expresses a commitment that will remain the same regardless of the outcome.
• Example: 비용이 더 들더라도 이 방법으로 할게요.
  Romanization: bi-yong-i deo deul-deo-ra-do i bang-beo-beu-ro hal-ge-yo.
  Translation: Even if it costs more, I'll use this method.
  「비용이 더 들더라도」 introduces the unfavorable possibility of increased costs. The main clause indicates that the speaker has still decided to use the original method despite that additional burden.

「-더라도」 Usage ②: Emphasizing Rules, Requirements, and Obligations

「-더라도」 is also frequently used when giving reminders, making requests, or explaining rules. The first clause presents a situation that might interfere with an action, while the main clause states that something that needs to be done cannot be omitted even under those circumstances.

For example, 「시간이 부족하더라도 확인은 꼭 해야 해요」 emphasizes that the checking procedure must be completed even if time is running short. This expression is well suited to workplace instructions, event preparations, and situations involving rules that must be followed. However, not every requirement needs to be expressed using 「-더라도」.

• Example: 시간이 부족하더라도 확인은 꼭 해야 해요.
  Romanization: si-ga-ni bu-jo-ka-deo-ra-do hwa-gi-neun kkok hae-ya hae-yo.
  Translation: Even if time is limited, you must make sure to check.
  「부족하더라도」 presents insufficient time as a condition that could affect the work, while the main clause emphasizes that the checking procedure cannot be skipped.
• Example: 조금 늦더라도 도착하기 전에 연락해 주세요.
  Romanization: jo-geum neut-deo-ra-do do-cha-ka-gi jeo-ne yeol-la-kae ju-se-yo.
  Translation: Even if you're going to be a little late, please contact me before you arrive.
  「늦더라도」 acknowledges the possibility of being late, while the main clause introduces an obligation that must still be observed. The sentence does not prohibit lateness; it reminds the other person to get in touch beforehand.
• Example: 바쁘더라도 약속은 지켜 주세요.
  Romanization: ba-ppeu-deo-ra-do yak-sso-geun ji-kyeo ju-se-yo.
  Translation: Please keep your promise even if you're busy.
  「바쁘더라도」 indicates that the requirement in the main clause remains valid even if being busy creates difficulties. Using 「-더라도」 makes the concessive nuance of the reminder more explicit.

「-더라도」 Usage ③: Combining with 「아무리」 to Emphasize the Degree of a Condition

「-더라도」 frequently combines with the adverb 「아무리」 to form 「아무리……더라도」, which generally means “no matter how …” or “however …”.

This construction takes the condition in the first clause to a relatively high degree and then explains that the outcome or requirement in the main clause still applies. For example, 「아무리 바쁘더라도 밥은 먹어야 해요」 emphasizes that no matter how busy someone is, they still need to eat.

However, 「아무리」 is not restricted to 「-더라도」; it can also be used in 「아무리……아/어도」. Both forms can strengthen the concessive nuance, although 「-더라도」 generally places greater emphasis on assuming an unfavorable condition.

• Example: 아무리 바쁘더라도 밥은 먹어야 해요.
  Romanization: a-mu-ri ba-ppeu-deo-ra-do ba-beun meo-geo-ya hae-yo.
  Translation: No matter how busy you are, you still need to eat.
  「아무리」 intensifies the degree of busyness, while 「바쁘더라도」 indicates that eating cannot be omitted regardless of how busy someone becomes.
• Example: 아무리 어렵더라도 포기하지 마세요.
  Romanization: a-mu-ri eo-ryeop-deo-ra-do po-gi-ha-ji ma-se-yo.
  Translation: No matter how difficult it is, please don't give up.
  「아무리 어렵더라도」 assumes that the difficulty may be considerable. The main clause then expresses the hope that the other person will not give up despite it.
• Example: 아무리 멀더라도 직접 가 보겠습니다.
  Romanization: a-mu-ri meol-deo-ra-do jik-jeop ga bo-get-seum-ni-da.
  Translation: No matter how far away it is, I'll go and see it myself.
  「아무리 멀더라도」 emphasizes that the distance could be considerable, while the main clause expresses an intention to go in person regardless. Sentences like this are often used to convey a decision that will not change because of a particular difficulty.

Can 「-아/어도」 and 「-더라도」 Be Used Interchangeably? Comparing Their Nuances Through Examples

The Korean endings 「-아/어도」 and 「-더라도」 can both mean “even if,” and they are interchangeable in many situations. For example, both 「비가 와도 가요」 and 「비가 오더라도 가요」 can mean “I'll go even if it rains.” However, the former simply states that rain will not affect the plan, whereas the latter places greater emphasis on sticking to the original decision despite any inconvenience caused by rain.

The distinction also involves tense. 「-아/어도」 can describe daily habits, general conditions, and events that have already happened. 「-더라도」 has a stronger hypothetical quality and is often used to emphasize that a plan, requirement, or judgment remains unchanged under unfavorable conditions. If the main clause recounts an event that definitely occurred, 「-아/어도」 generally cannot be replaced directly with 「-더라도」.

Comparison	「-아/어도」	「-더라도」
Basic meaning	Even if … / It's okay even if …	Even if … / Even under those circumstances, …
Degree of concession	General concession with a relatively neutral tone	Stronger concession, emphasizing the obstacle presented by a condition
Situation in the first clause	Can be a general condition, known fact, or hypothesis	Tends to present a hypothetical situation that does not change the main clause
Must the condition be unfavorable?	Not necessarily; it can describe ordinary conditions	Often assumes conditions that could create difficulties or affect the outcome
Speaker's attitude	States that the condition does not affect the outcome	More explicitly emphasizes that the outcome remains unchanged even if the condition occurs
Everyday habits	Very natural; commonly describes repeated actions	Also possible, but tends to give the particular condition more prominence
Past events that actually occurred	Can directly describe them with a past-tense main clause	Generally unsuitable for directly recounting confirmed past events
Tense of the main clause	Can be used with present, past, and future tense	More natural with present, future, and hypothetical statements
Promises and decisions	Can express them, including with 「꼭」 for emphasis	Often emphasizes that a decision remains unchanged despite unfavorable conditions
Rules and requirements	Can directly communicate obligations	Places greater emphasis on the requirement remaining in force despite obstacles
Permission constructions	Can combine with 「되다／괜찮다」 to express permission	Cannot directly replace the permission function of 「-아/어도 되다」
Interchangeability	Can often be replaced with 「-더라도」 in general concessive sentences, but the nuance changes	Cannot directly replace every sentence describing past facts or expressing permission
Example	비가 와도 행사는 진행돼요.	비가 오더라도 행사는 진행돼요.
Example nuance	Matter-of-factly announces that the event will go ahead despite rain	Emphasizes that the event will still go ahead even if rain creates difficulties

▌「-아/어도」 vs. 「-더라도」: General Concession vs. Stronger Hypothetical Emphasis

「-아/어도」 is suitable for directly explaining that a condition does not affect the outcome. The condition does not have to be especially difficult, and there is no need to emphasize how much trouble it might cause. 「-더라도」, meanwhile, strengthens the hypothetical nature of the first clause, suggesting that the speaker has considered the obstacles the condition might create but will still maintain the decision expressed in the main clause.

For example, 「비가 와도 가요」 fully expresses the idea of going out even if it rains. Changing it to 「비가 오더라도 가요」 more explicitly emphasizes that “even if it really rains, I won't cancel because of it.” However, 「-더라도」 does not imply that rain definitely will not occur, nor does it require the situation to be particularly serious.

• Example: 비가 와도 가요.
  Romanization: bi-ga wa-do ga-yo.
  Translation: I'll go even if it rains.
  「-아/어도」 simply states that rain will not affect the plan to go out. The sentence does not particularly emphasize how difficult rain might make things; it just communicates that the original plan will remain unchanged.
• Example: 비가 오더라도 가요.
  Romanization: bi-ga o-deo-ra-do ga-yo.
  Translation: Even if it rains, I'll still go.
  「-더라도」 more explicitly presents rain as a condition that could affect the trip and emphasizes that the speaker will still go out as originally planned.

▌「-아/어도」 vs. 「-더라도」: Everyday Habits vs. Emphasizing a Decision

「-아/어도」 is particularly suitable for describing daily habits. When the main clause contains words such as 「매일 (every day)」 or 「항상 (always)」, the sentence usually explains how something is routinely done. For example, 「피곤해도 매일 운동해요」 naturally expresses the habit of exercising every day even when tired.

「-더라도」 can also describe everyday actions, but it places greater emphasis on the fact that the condition in the first clause will not change the arrangement in the main clause. For instance, 「피곤하더라도 매일 운동해요」 can also describe a daily exercise habit, but it sounds more like the speaker is specifically emphasizing, “Even when I'm tired, I don't let that stop me from exercising.”

Both endings can therefore express a firm attitude. It would be inaccurate to assume that 「-아/어도」 lacks determination while 「-더라도」 necessarily expresses it. The distinction lies in whether the concessive condition is deliberately emphasized.

• Example: 피곤해도 매일 운동해요.
  Romanization: pi-gon-hae-do mae-il un-dong-hae-yo.
  Translation: I exercise every day, even when I'm tired.
  This sentence mainly describes a regular exercise habit. 「피곤해도」 simply indicates that tiredness does not affect the daily routine, without particularly strengthening the hypothetical nuance.
• Example: 피곤하더라도 매일 운동해요.
  Romanization: pi-gon-ha-deo-ra-do mae-il un-dong-hae-yo.
  Translation: Even if I'm tired, I still exercise every day.
  Changing the ending to 「-더라도」 places greater emphasis on maintaining the daily exercise routine even when tiredness might make exercising difficult. This expression more readily conveys an attitude of not allowing tiredness to interrupt the habit.

▌「-아/어도」 vs. 「-더라도」: Events That Happened vs. Hypothetical Situations

The difference in tense between 「-아/어도」 and 「-더라도」 deserves particular attention, beyond their general differences in concessive nuance. 「-아/어도」 can naturally combine with a past-tense main clause to recount an event that took place despite an obstacle.

「-더라도」, on the other hand, tends to introduce a hypothetical condition and then discuss whether the result, requirement, or decision in the main clause would still apply. Consequently, using 「-더라도」 to simply describe something that happened yesterday generally sounds unnatural.

For example, 「몸이 아파도 회사에 갔어요」 recounts an experience of going to work despite feeling unwell. In contrast, 「몸이 아프더라도 회사에 갈 거예요」 expresses an intention to go to work even if the speaker feels unwell in the future. Besides the degree of concession, the two sentences differ in whether the event has already happened.

• Example: 몸이 아파도 회사에 갔어요.
  Romanization: mo-mi a-pa-do hoe-sa-e ga-sseo-yo.
  Translation: I went to work even though I wasn't feeling well.
  The main clause 「갔어요」 indicates that going to work actually happened, and the sentence recounts a past experience. 「-아/어도」 is more natural in this context.
• Example: 몸이 아프더라도 회사에 갈 거예요.
  Romanization: mo-mi a-peu-deo-ra-do hoe-sa-e gal geo-ye-yo.
  Translation: Even if I'm not feeling well, I'll still go to work.
  「아프더라도」 assumes that the speaker might feel unwell in the future, while 「갈 거예요」 expresses a future intention. Because the sentence retains a hypothetical meaning, 「-더라도」 is natural here.

However, 「-더라도」 is not completely incompatible with past-tense forms appearing before it. For example, 「이미 늦었더라도 연락은 해야 해요 (Even if you're already late, you still need to get in touch)」 is a valid sentence. Although 「늦었-」 contains a past-tense marker, the main clause still explains what should be done under a particular condition rather than simply recounting a completed event.

▌「-아/어도 되다」 vs. 「-더라도」: Asking Permission vs. Emphasizing a Requirement

In addition to expressing general concession, 「-아/어도」 frequently combines with 「되다」 or 「괜찮다」 to form permission constructions. For example, 「앉아도 돼요?」 asks whether sitting down is allowed, while 「조금 늦어도 괜찮아요?」 checks whether arriving slightly late is acceptable.

These sentences already mean something close to “May I …?” or “Is it okay if …?”, so 「-아/어도」 cannot simply be replaced with 「-더라도」.

「-더라도」 can be used in similar situations, but the main clause usually needs to express a different decision or requirement. For example, 「조금 늦더라도 연락해 주세요」 means that the person should still get in touch even if they might be late. It does not answer whether lateness is permitted; it reminds the person of something they must do.

• Example: 조금 늦어도 괜찮아요?
  Romanization: jo-geum neu-jeo-do gwaen-cha-na-yo?
  Translation: Is it okay if I'm a little late?
  「-아/어도 괜찮다」 asks whether a particular situation is acceptable. Here, the speaker is checking whether the other person would allow a slightly late arrival, rather than emphasizing something that must be completed despite being late.
• Example: 조금 늦더라도 연락해 주세요.
  Romanization: jo-geum neut-tteo-ra-do yeol-la-kae ju-se-yo.
  Translation: Please contact me even if you're going to be a little late.
  「-더라도」 presents lateness as a possible situation, while the main clause introduces a requirement that must still be followed. The sentence reminds the other person to get in touch and should not be interpreted as a simple expression of permission.

▌How Different Endings Change the Nuance in the Same Situation

Suppose an outdoor event is scheduled for tomorrow. The organizers have already decided to proceed as planned, but the weather forecast indicates that rain is possible. Both 「-아/어도」 and 「-더라도」 can be used here. The difference lies in how the organizers want to communicate their decision.

「비가 와도 행사는 예정대로 진행돼요」 directly informs participants that the event will go ahead as scheduled even if it rains. 「비가 오더라도 행사는 예정대로 진행돼요」 more explicitly indicates that the organizers have already considered the possibility of rain and will not cancel the event because of it.

The same distinction can arise during event preparations. If time is running short but a checking procedure must still be completed, 「-아/어도」 can communicate the requirement in a straightforward way, while 「-더라도」 can give the reminder greater emphasis.

• Example: 비가 와도 행사는 예정대로 진행돼요.
  Romanization: bi-ga wa-do haeng-sa-neun ye-jeong-dae-ro jin-haeng-dwae-yo.
  Translation: Even if it rains, the event will proceed as scheduled.
  「-아/어도」 communicates the event arrangements in a matter-of-fact tone. Rain is simply the condition presented in the first clause, while the main clause states that the event will still take place as planned.
• Example: 비가 오더라도 행사는 예정대로 진행돼요.
  Romanization: bi-ga o-deo-ra-do haeng-sa-neun ye-jeong-dae-ro jin-haeng-dwae-yo.
  Translation: Even if it rains, the event will still go ahead as scheduled.
  「-더라도」 places greater emphasis on the original arrangements remaining unchanged despite the potential effects of rain. This nuance is suitable when organizers particularly need to reassure participants that the event will not be canceled.
• Example: 시간이 없어도 확인해야 해요.
  Romanization: si-ga-ni eop-sseo-do hwa-gi-nae-ya hae-yo.
  Translation: Even if there's no time, you still need to check.
  「-아/어도」 directly states that the checking procedure must still be completed when time is insufficient. It is suitable for general workplace instructions or explanations of procedures.
• Example: 시간이 없더라도 확인해야 해요.
  Romanization: si-ga-ni eop-tteo-ra-do hwa-gi-nae-ya hae-yo.
  Translation: Even if there's really no time, you still have to check.
  Changing the ending to 「-더라도」 places greater emphasis on the fact that insufficient time cannot justify skipping the check. The requirement remains the same, but the reminder is more emphatic than an ordinary concessive statement.

In both pairs of examples, the main clause remains unchanged; only the connective ending in the first clause differs. If the intention is simply to state that a condition does not affect the outcome, 「-아/어도」 is a natural choice. To emphasize that a decision or requirement remains valid despite unfavorable circumstances, 「-더라도」 can be used instead. However, when dealing with past events that actually occurred or permission constructions, the tense and meaning of the entire sentence must also be considered. The endings cannot be interchanged based solely on the strength of their concession.

Choosing Between 「-더라도」 and 「-아/어도」: Three Everyday Situations

Both 「-아/어도」 and 「-더라도」 are common in everyday Korean conversation, appearing in situations ranging from meeting friends and giving workplace instructions to making event announcements. When simply explaining that a condition does not affect the outcome, 「-아/어도」 is a natural choice. To emphasize that an existing decision or requirement will remain unchanged despite difficulties, 「-더라도」 can be used. However, the meaning of the entire sentence must still guide the choice. For example, someone asking whether it is acceptable to arrive late would typically say 「늦어도 괜찮아요?」. To remind someone to contact you in advance even if they are late, you could say 「늦더라도 연락해 주세요」. The two endings are not simply distinguished as spoken versus written forms, and there is no need to intensify the concessive nuance in every sentence.

▌Situation ①: Meeting a Friend — Is Arriving Late Acceptable?

A：조금 늦어도 괜찮아요?
　　jo-geum neu-jeo-do gwaen-cha-na-yo?
　　Is it okay if I'm a little late?

B：네, 괜찮아요. 늦더라도 도착하기 전에 연락해 주세요.
　　ne, gwaen-cha-na-yo. neut-tteo-ra-do do-cha-ka-gi jeo-ne yeol-la-kae ju-se-yo.
　　That's fine. But even if you're going to be late, please contact me before you arrive.

📌 Grammar Point: A uses 「늦어도 괜찮아요?」 to ask whether arriving slightly late is acceptable. Here, 「-아/어도 괜찮다」 expresses permission and acceptance. B, on the other hand, uses 「늦더라도」 to acknowledge the possibility of being late while emphasizing that advance contact is still required. Although both sentences refer to being late, they address different questions. If A's sentence were changed to 「늦더라도 괜찮아요?」, it would place greater emphasis on the hypothetical condition of being late, losing the natural simplicity of merely asking whether a late arrival is acceptable. When confirming meeting times with friends, 「조금 늦어도 괜찮아요?」 is entirely appropriate. 「-더라도」 is more suitable when there is a particular obligation that should not be overlooked.

▌Situation ②: A Tight Work Schedule — Can the Checking Procedure Be Skipped?

A：시간이 부족하면 확인을 생략해도 될까요?
　　si-ga-ni bu-jo-ka-myeon hwa-gi-neul saeng-nya-kae-do doel-kka-yo?
　　If we're short on time, may we skip the checking procedure?

B：시간이 부족하더라도 확인은 꼭 해야 해요.
　　si-ga-ni bu-jo-ka-deo-ra-do hwa-gi-neun kkok hae-ya hae-yo.
　　Even if time is limited, we still have to check.

📌 Grammar Point: A uses 「생략해도 될까요?」 to ask for permission to skip the checking procedure. Here, 「-아/어도 되다」 expresses permission. B uses 「시간이 부족하더라도」 to emphasize that the checking procedure cannot be skipped even when time is insufficient. Changing the sentence to 「시간이 부족해도 확인은 꼭 해야 해요」 would be grammatically and semantically acceptable, but its tone would be closer to a general workplace rule. With 「-더라도」, insufficient time is more explicitly presented as a condition that could affect the work, followed by a reminder that the check must still be completed. Both forms can be used in the workplace; the distinction is whether the requirement needs particular emphasis.

▌Situation ③: An Outdoor Event — How to Inform Participants About Rain

A：내일 비가 오면 행사는 취소하나요?
　　nae-il bi-ga o-myeon haeng-sa-neun chwi-so-ha-na-yo?
　　Will the event be canceled if it rains tomorrow?

B：아니요. 비가 오더라도 예정대로 진행합니다.
　　a-ni-yo. bi-ga o-deo-ra-do ye-jeong-dae-ro jin-haeng-ham-ni-da.
　　No. Even if it rains, the event will proceed as scheduled.

📌 Grammar Point: A uses 「비가 오면」 to introduce the condition “if it rains tomorrow” and asks whether the event will be canceled. B uses 「비가 오더라도」 to emphasize that the event arrangements will remain unchanged even if it actually rains. 「-더라도」 is natural here because rain could affect an outdoor event, but the organizers have nevertheless decided to proceed. Changing it to 「비가 와도 예정대로 진행합니다」 would also indicate that rain will not affect the event, but in a more matter-of-fact tone. When making an announcement to participants, 「-더라도」 can emphasize that possible changes in weather have already been considered and that the event will still proceed as planned. However, this construction does not itself mean that an event must take place under all weather conditions. Actual cancellation decisions must still follow event policies and safety arrangements.

Additional Usage Notes:

1. Both 「-아/어도」 and 「-더라도」 can appear in everyday conversations. There is no need to classify the former as conversational and the latter as formal. For example, friends can say either 「비가 와도 갈게요」 or 「비가 오더라도 갈게요」. The former simply indicates that the speaker will go even if it rains, while the latter places greater emphasis on maintaining that decision despite any inconvenience rain might cause. The main clause also affects the overall nuance. For example, 「꼭 갈게요」 already expresses a definite commitment, so using 「-아/어도」 does not mean that the speaker is less determined.
2. 「-아/어도 되다」 should be distinguished from ordinary concessive uses. Expressions such as 「앉아도 돼요?」 and 「들어가도 될까요?」 both ask for permission. They cannot simply be changed to 「앉더라도 돼요?」 or 「들어가더라도 될까요?」 while retaining the same meaning. Although 「-더라도」 and 「되다」 can appear in the same sentence, the meaning of the entire sentence and the conditions surrounding it must be evaluated separately. The two endings should not be treated as fixed substitutes. For questions meaning “May I …?” or “Is it okay if …?”, it is more accurate to first determine whether the sentence uses the permission construction 「-아/어도 되다／괜찮다」.
3. When recounting something that has already happened, 「-아/어도」 is generally more natural. For example, 「비가 와도 행사는 진행됐어요」 means that the event ultimately took place despite the rain. It reports a past event that definitely occurred. Changing this directly to 「비가 오더라도 행사는 진행됐어요」 would sound unnatural as a statement about the same completed event. 「-더라도」 is more suitable when the outcome is not yet certain and a hypothetical condition is introduced to explain a plan or requirement, as in 「비가 오더라도 행사는 진행될 거예요」. Therefore, even when both 「-아/어도」 and 「-더라도」 can be translated as “even if,” it is necessary to consider not only their nuances but also whether the sentence describes a past fact or arrangements under a hypothetical condition.

Comparing Korean 「-아/어도／-더라도」 with Japanese 「〜ても／たとえ〜ても」

The Japanese expression 「〜ても」 and the Korean ending 「-아/어도」 can both mean “even if,” indicating that the condition in the first clause does not change the outcome in the main clause. For example, 「雨が降っても行きます」 and 「비가 와도 가요」 both mean that someone will go even if it rains. The two languages work quite similarly in general concessive sentences of this kind.

To place greater emphasis on the idea that “even under those circumstances, the decision will not change,” Japanese can add 「たとえ」 before 「〜ても」 to form 「たとえ〜ても」. Korean, meanwhile, often uses the stronger concessive ending 「-더라도」. For example, 「たとえ雨が降っても行きます」 and 「비가 오더라도 갈 거예요」 both more explicitly present rain as a condition that might affect the trip.

However, Japanese 「〜ても」 does not correspond exclusively to Korean 「-아/어도」, and 「たとえ〜ても」 does not always have to be translated with 「-더라도」. Both languages can adjust the nuance through context, sentence endings, and other adverbs. In addition, Japanese 「〜てもいい」 and Korean 「-아/어도 되다」 can both express permission. This is a different function from the varying strength of general concession and needs to be considered separately.

◆ Similar Expression ①: Japanese 「〜ても」

The closest similarity between Japanese 「〜ても」 and Korean 「-아/어도」 is that both can indicate that a condition may be met without affecting what follows. The condition may be a hypothetical situation that has not yet occurred or a situation that regularly arises in daily life. Both expressions are therefore well suited to describing weather, everyday habits, and general arrangements.

For example, Japanese 「忙しくても、毎日朝ご飯を食べます」 and Korean 「바빠도 매일 아침을 먹어요」 both indicate that the habit of eating breakfast every day remains unchanged even when someone is busy. Neither expression deliberately emphasizes the difficulties caused by being busy; both simply describe an everyday situation.

Japanese 「〜ても」 can also appear in sentences recounting past events, making it similar to Korean 「-아/어도」 in this respect. When the main clause describes something that has already happened, 「-아/어도」 is generally the more natural choice in Korean.

• Example: 雨が降っても、予定どおり行きます。
  Kana: あめがふっても、よていどおりいきます。
  Translation: Even if it rains, I'll go as planned.
  Korean: 비가 와도 예정대로 갈 거예요.
  Romanization: bi-ga wa-do ye-jeong-dae-ro gal geo-ye-yo.
  Both Japanese 「雨が降っても」 and Korean 「비가 와도」 indicate that rain will not affect the original plan. The two sentences simply communicate the arrangements without particularly emphasizing how much inconvenience rain might cause. In Korean, 「비가 오더라도」 could also be used, but it would convey a stronger sense of concession.
• Example: 忙しくても、毎日朝ご飯を食べます。
  Kana: いそがしくても、まいにちあさごはんをたべます。
  Translation: I eat breakfast every day, even when I'm busy.
  Korean: 바빠도 매일 아침을 먹어요.
  Romanization: ba-ppa-do mae-il a-chi-meul meo-geo-yo.
  Both Japanese 「忙しくても」 and Korean 「바빠도」 can describe situations that occur repeatedly in everyday life. The following words 「毎日／매일」 indicate a daily habit, so general concessive forms are natural in both languages. There is no need to deliberately emphasize the hypothetical nature of the condition.
• Example: 何度電話しても、返事がありませんでした。
  Kana: なんどでんわしても、へんじがありませんでした。
  Translation: No matter how many times I called, there was no response.
  Korean: 여러 번 전화해도 답이 없었어요.
  Romanization: yeo-reo beon jeon-hwa-hae-do da-bi eop-sseo-sseo-yo.
  This pair of sentences recounts a past situation in which repeated phone calls received no response. Both Japanese 「電話しても」 and Korean 「전화해도」 can be used with a past-tense main clause. If the Korean sentence were changed directly to 「전화하더라도 답이 없었어요」, it would sound unnatural when describing an experience that actually occurred.

◆ Similar Expression ②: Japanese 「たとえ〜ても」

Japanese 「たとえ〜ても」 and Korean 「-더라도」 are both suitable for emphasizing a concessive condition. In Japanese, 「たとえ」 explicitly introduces the preceding situation, adding a sense of “even if that really happens.” In Korean, 「-더라도」 strengthens the hypothetical and concessive meanings through the ending itself.

For example, Japanese 「たとえ雨が降っても、予定どおり出発します」 and Korean 「비가 오더라도 예정대로 출발하겠습니다」 both assume that rain might affect travel plans while indicating that the planned departure will remain unchanged. Expressions like these are commonly used for commitments, plans, reminders, and rules that must be followed.

However, Japanese 「たとえ〜ても」 does not necessarily express greater determination than every sentence without 「たとえ」, and Korean 「-더라도」 does not imply that the preceding condition must be particularly serious. What these expressions have in common is that the speaker chooses to emphasize the hypothetical condition while indicating that the main clause remains valid despite it.

• Example: たとえ雨が降っても、予定どおり出発します。
  Kana: たとえあめがふっても、よていどおりしゅっぱつします。
  Translation: Even if it rains, we'll depart as scheduled.
  Korean: 비가 오더라도 예정대로 출발하겠습니다.
  Romanization: bi-ga o-deo-ra-do ye-jeong-dae-ro chul-bal-ha-get-seum-ni-da.
  In Japanese, adding 「たとえ」 before 「雨が降っても」 gives greater prominence to the hypothetical condition of rain. In Korean, 「오더라도」 emphasizes that the departure plan will remain unchanged despite any inconvenience rain might cause. Both sentences are suitable when travel arrangements have already been decided and ordinary changes in the weather are not expected to cause cancellation.
• Example: たとえ時間がなくても、説明は最後まで聞いてください。
  Kana: たとえじかんがなくても、せつめいはさいごまできいてください。
  Translation: Even if you don't have time, please listen to the explanation until the end.
  Korean: 시간이 없더라도 설명은 끝까지 들어 주세요.
  Romanization: si-ga-ni eop-tteo-ra-do seol-myeong-eun kkeut-kka-ji deu-reo ju-se-yo.
  Japanese 「たとえ時間がなくても」 and Korean 「시간이 없더라도」 both present a lack of time as a condition that could interfere with the action that follows, then introduce a requirement that must not be omitted. Japanese strengthens the nuance through 「たとえ」, while Korean uses 「-더라도」 to express a stronger concession. For an ordinary reminder, Japanese 「時間がなくても」 and Korean 「시간이 없어도」 are also acceptable.
• Example: たとえ結果が変わっても、事実を話します。
  Kana: たとえけっかがかわっても、じじつをはなします。
  Translation: Even if the outcome changes, I will tell the truth.
  Korean: 결과가 달라지더라도 사실대로 말하겠습니다.
  Romanization: gyeol-gwa-ga dal-la-ji-deo-ra-do sa-sil-dae-ro mal-ha-get-seum-ni-da.
  Both Japanese 「たとえ結果が変わっても」 and Korean 「결과가 달라지더라도」 assume that the outcome might change, while indicating that the commitment in the main clause will remain unchanged. The emphasis is on the speaker maintaining the same course of action regardless of the outcome, not on the outcome having already changed.

◆ Similar Expression ③: Japanese 「〜てもいい」

Japanese 「〜てもいい」 and Korean 「-아/어도 되다」 can both express permission, generally meaning “may,” “can,” or “it's okay to.” For example, Japanese 「ここに座ってもいいですか」 and Korean 「여기 앉아도 돼요?」 both ask whether sitting in a particular place is permitted.

Although these expressions also contain 「ても／아/어도」, the meaning of the entire sentence has shifted from general concession to asking for or granting permission. Japanese 「〜てもいい」 cannot simply be changed to 「たとえ〜てもいい」 based on the strength of the concession. Similarly, Korean 「-아/어도 되다」 cannot freely be changed to 「-더라도 되다」 to express the same permission.

Furthermore, Japanese 「〜てもいい」 can correspond not only to Korean 「-아/어도 되다」 but also to 「-아/어도 괜찮다」. The former directly indicates that an action is permitted, while the latter is closer to saying that doing so is acceptable or not a problem. The appropriate expression can be selected according to the context.

• Example: ここに座ってもいいですか。
  Kana: ここにすわってもいいですか。
  Translation: May I sit here?
  Korean: 여기 앉아도 돼요?
  Romanization: yeo-gi an-ja-do dwae-yo?
  Japanese 「座ってもいいですか」 and Korean 「앉아도 돼요?」 both ask for permission. They are suitable for restaurants, waiting areas, and other places where someone needs to confirm whether a seat is available for use. Here, 「ても／아/어도」 combines with 「いい／되다」 to form a permission construction, so it cannot simply be replaced with the stronger concessive ending 「-더라도」.
• Example: 今、入ってもいいですか。
  Kana: いま、はいってもいいですか。
  Translation: May I go in now?
  Korean: 지금 들어가도 돼요?
  Romanization: ji-geum deu-reo-ga-do dwae-yo?
  Japanese 「入ってもいいですか」 and Korean 「들어가도 돼요?」 both ask whether entering now is permitted. These expressions can be used in offices, classrooms, and other places where prior confirmation is necessary. The focus is on whether entry is allowed, not on insisting on entering despite a particular condition.
• Example: 少し遅れてもいいですよ。
  Kana: すこしおくれてもいいですよ。
  Translation: It's okay if you're a little late.
  Korean: 조금 늦어도 괜찮아요.
  Romanization: jo-geum neu-jeo-do gwaen-cha-na-yo.
  Japanese 「遅れてもいい」 and Korean 「늦어도 괜찮다」 both indicate that arriving slightly late is acceptable. Korean can also use 「조금 늦어도 돼요」, but 「괜찮아요」 more directly conveys that the other person's slightly late arrival is not a problem. Changing it to 「늦더라도 연락해 주세요」 would mean that the person must get in touch even if they are late, which is no longer the original expression of permission.

◆ The Key Differences Between Korean 「-아/어도／-더라도」

Japanese 「〜ても」 and Korean 「-아/어도」 have quite similar uses when expressing general concession, everyday habits, and certain past events. For example, 「雨が降っても行きます」 can correspond to 「비가 와도 갈 거예요」, while 「忙しくても毎日運動します」 can correspond to 「바빠도 매일 운동해요」. Both languages can state in a straightforward manner that the condition in the first clause does not affect what follows.

To strengthen the hypothetical or concessive nuance, Japanese often uses 「たとえ〜ても」, while Korean can use 「-더라도」. Expressions such as 「たとえ雨が降っても行きます」 and 「비가 오더라도 갈 거예요」 both place greater emphasis on the condition of rain. However, Japanese strengthens the nuance through the adverb 「たとえ」, whereas Korean can express a stronger concession directly through the connective ending 「-더라도」. The two should therefore not be treated as an entirely fixed translation formula.

Japanese 「〜てもいい」 and Korean 「-아/어도 되다」 can also both express permission, but Korean 「-더라도」 cannot directly replace that function. Tense also matters: Japanese 「〜ても」 can describe past situations that actually occurred, and Korean 「-아/어도」 generally provides a natural counterpart. 「-더라도」, however, is better suited to statements that retain a hypothetical meaning and cannot be applied directly to every completed past event. When comparing Korean and Japanese, it is important to consider not only whether both expressions can be translated as “even if,” but also whether the sentence states a fact, introduces a hypothetical condition, emphasizes a requirement, or asks for permission.

When encountering Korean 「-더라도」 and 「-아/어도」, first consider whether the sentence recounts something that has already happened or discusses a decision or requirement under a hypothetical condition. For example, 「몸이 아파도 회사에 갔어요」 indicates that the person actually went to work in the past, so 「-아/어도」 is more natural. By contrast, 「몸이 아프더라도 회사에 갈 거예요」 assumes that the person might feel unwell in the future but still intends to go to work, making 「-더라도」 better suited to emphasizing the concession.

If both forms can be used, consider the intended nuance. 「비가 와도 가요」 simply states that rain will not affect the plan to go out, while 「비가 오더라도 가요」 places greater emphasis on having considered the potential inconvenience of rain. For permission questions such as 「앉아도 돼요?」, 「-아/어도 되다」 should be understood as a complete construction rather than replaced directly with 「-더라도」. In practice, the choice depends not only on the degree of concession but also on tense and the relationship between the clauses.

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