“-(으)로 미루어 보아” indicates that a conclusion is inferred from known facts, data or visible signs, even though it has not yet been fully confirmed. It is often translated as “judging from,” “based on” or “from this, it appears that.”

A darkening sky, boxes piled in front of a door or system records that stop at a particular time can all serve as evidence. However, these clues are not conclusions in themselves. “-(으)로 미루어 보아” first explains what has been observed and then states how far the available evidence allows the speaker to infer.

This expression frequently appears in news reports, formal reports, meeting analyses and professional commentary. It can also be used in everyday conversation, but it sounds more complete and analytical than “것 같다” or “-나 보다” because it explicitly states the basis for the inference.

What Does “-(으)로 미루어 보아” Mean in Korean? Drawing a Conclusion from Available Evidence

“-(으)로 미루어 보아” means “judging from the preceding fact” or “inferring from the available evidence.” It does not directly explain why an event occurred. Instead, it identifies the material on which a particular judgement is based.

The verb “미루다” here does not carry its common meaning of “to postpone” or “to put off.” In this expression, it means “to infer something from known facts.”

Therefore, “일을 미루다” means to postpone work, while “표정으로 미루어 보아” means to infer something from a person’s facial expression.

How Is “-(으)로 미루어 보아” Formed? Rules for Nouns and Nominalized Events

“-(으)로 미루어 보아” mainly follows nouns.

A noun with a final consonant generally takes “으로.” A noun without a final consonant, or one ending in ㄹ, takes “로.”

To use a complete action, state or event as the basis for a judgement, it must first be nominalized with a noun such as “것,” “사실,” “정황” or “기록,” followed by “으로 미루어 보아.”

Preceding Content	Structure	Example	Function
Noun with a final consonant	Noun＋으로 미루어 보아	표정으로 미루어 보아	Judging from the facial expression
Noun without a final consonant	Noun＋로 미루어 보아	자료로 미루어 보아	Judging from the data
Noun ending in ㄹ	Noun＋로 미루어 보아	말로 미루어 보아	Judging from what was said
Fact or result	Noun＋로 미루어 보아	사실로 미루어 보아	Judging from the fact or result
Present or ongoing verb event	V-는 것으로 미루어 보아	계속 묻는 것으로 미루어 보아	Judging from the continuing action
Past verb event	V-(으)ㄴ 것으로 미루어 보아	미리 떠난 것으로 미루어 보아	Judging from an action that has already occurred
Adjective or state	A-(으)ㄴ 것으로 미루어 보아	방이 조용한 것으로 미루어 보아	Judging from the current state

Should You Use “으로” or “로” Before “미루어 보아”?

The connection follows the standard Korean rules for the particles “으로／로.”

받침 있음＋으로: 표정으로、기록으로、상황으로

받침 없음＋로: 자료로、태도로、근거로

ㄹ 받침＋로: 말로、사실로

How Do Verbs and Adjectives Connect to “-(으)로 미루어 보아”? Nominalize Them with “것”

“-(으)로 미루어 보아” cannot directly follow a complete verb clause.

The action or state must first be changed into “V-는 것,” “V-(으)ㄴ 것” or “A-(으)ㄴ 것.”

계속 질문하다 → 계속 질문하는 것으로 미루어 보아

답장을 보내지 않았다 → 답장을 보내지 않은 것으로 미루어 보아

방이 조용하다 → 방이 조용한 것으로 미루어 보아

What Common Expressions Follow “-(으)로 미루어 보아”?

“-(으)로 미루어 보아” is commonly followed by expressions such as “것 같다,” “듯하다,” “것으로 보이다,” “추정된다” and “판단된다.”

It may also be followed by “알 수 있다” or “볼 수 있다” to present an analytical conclusion.

The important point is not that the following clause must always sound uncertain. The conclusion must simply be logically derived from the evidence stated before it.

Following Expression	Basic Nuance	Suitable Context
것 같다	General and natural conjecture	Everyday conversation and general explanations
듯하다	Restrained and relatively formal	Reports and commentary
모양이다	Judgement based on outward signs	Conversation and observations about a person’s condition
것으로 보이다	Stronger sense of objective analysis	News and reports
가능성이 크다	Evaluates a high likelihood	Investigations and risk analysis
것으로 판단된다	Presents an explicit analytical judgement	Formal reports and research

The following clause does not always need an expression such as “것 같다.”

Formal writing may also use “알 수 있다,” “볼 수 있다” or “판단된다.”

However, if the event has not been directly confirmed, it is inappropriate to end with a simple past-tense statement that presents the inference as a proven fact.

✅ More natural:
최근 기록으로 미루어 보아 오류는 어젯밤부터 발생한 것으로 보입니다.
Judging from the recent records, the error appears to have started last night.

△ Semantically inconsistent:
최근 기록으로 미루어 보아 오류는 어젯밤부터 발생했습니다.
Judging from the recent records, the error started last night.

The second sentence marks the statement as an inference at the beginning but ends by presenting it as a confirmed fact.

If an investigation has fully confirmed the result, “기록을 확인한 결과” would be more accurate.

Three Common Uses of “-(으)로 미루어 보아”

Usage 1: Inferring the Current Situation from Visible Conditions

Facial expressions, voices, the colour of the sky, the position of objects and traces left at a scene can all serve as evidence.

These clues may increase the likelihood of a conclusion, but they do not guarantee that the judgement is correct.

This is the easiest type of usage to encounter in everyday observation.

For a casual guess, “-나 보다” may be sufficient. When the speaker needs to explain the evidence clearly, “-(으)로 미루어 보아” provides a more complete expression.

Example:
하늘이 어두운 것으로 미루어 보아 곧 비가 올 것 같아요.
Romanization: ha-neu-ri eo-du-un geo-seu-ro mi-ru-eo bo-a got bi-ga ol geot ga-ta-yo.
Translation: Judging from how dark the sky is, it looks as though it will rain soon.

The dark sky is directly observable, while the prediction of rain is inferred from that condition.

Example:
바닥에 남은 발자국으로 미루어 보아 누군가 안으로 들어간 것 같습니다.
Romanization: ba-da-ge na-meun bal-ja-gu-geu-ro mi-ru-eo bo-a nu-gun-ga a-neu-ro deu-reo-gan geot gat-seum-ni-da.
Translation: Judging from the footprints left on the floor, it appears that someone entered.

The footprints are physical evidence supporting the inference that someone went inside, but they do not directly establish the person’s identity.

Example:
그의 목소리로 미루어 보아 많이 피곤한 듯해요.
Romanization: geu-ui mok-so-ri-ro mi-ru-eo bo-a ma-ni pi-gon-han deu-tae-yo.
Translation: Judging from his voice, he seems extremely tired.

The state of his voice can suggest fatigue, but it does not mean the speaker has confirmed his physical condition.

Usage 2: Making an Assessment Based on Data, Figures or Records

In reports and meetings, “-(으)로 미루어 보아” is often used to place the analytical basis before the conclusion.

The data is something that can be examined by everyone, while the following clause presents the assessment derived from it.

This structure provides more evidence than simply using “아마” and clearly separates known data from an analytical conclusion.

If the result has already been confirmed through a complete investigation, a definite expression such as “조사 결과” or “확인 결과” should be used instead.

Example:
최근 판매량으로 미루어 보아 이 제품의 수요가 늘어난 것으로 보입니다.
Romanization: choe-geun pan-mae-ryang-eu-ro mi-ru-eo bo-a i je-pu-mui su-yo-ga neu-reo-nan geo-seu-ro bo-im-ni-da.
Translation: Judging from the recent sales figures, demand for this product appears to have increased.

Sales volume can serve as evidence of changing demand, but increased popularity remains an analytical conclusion and should not be treated as the only established fact.

Example:
설문 조사 결과로 미루어 보아 참가자들은 안내 방식에 대체로 만족한 듯합니다.
Romanization: seol-mun jo-sa gyeol-gwa-ro mi-ru-eo bo-a cham-ga-ja-deu-reun an-nae bang-si-ge dae-che-ro man-jo-kan deu-tam-ni-da.
Translation: Judging from the survey results, the participants seem to have been generally satisfied with the way the information was presented.

“듯하다” keeps the conclusion evaluative and avoids presenting the survey as proof that every participant shared the same opinion.

Example:
최근 접속 기록으로 미루어 보아 오류는 어젯밤부터 발생한 것으로 판단됩니다.
Romanization: choe-geun jeop-sok gi-ro-geu-ro mi-ru-eo bo-a o-ryu-neun eo-jet-ppam-bu-teo bal-saeng-han geo-seu-ro pan-dan-doem-ni-da.
Translation: Based on the recent access records, the error is judged to have begun last night.

“것으로 판단되다” frequently appears in fault reports and investigation summaries and sounds more formal than “것 같다.”

Usage 3: Inferring a Person’s Thoughts or Decisions from Their Behaviour

A person’s thoughts, intentions and judgements cannot be directly observed.

They are usually inferred from how the person responds, behaves, speaks or prepares.

Using “-(으)로 미루어 보아” clearly indicates that the statement is only an interpretation based on outward behaviour. It prevents the speaker from presenting an unspoken thought as a fact.

Example:
답장을 바로 보내지 않은 것으로 미루어 보아 아직 결정을 내리지 못한 모양입니다.
Romanization: dap-jang-eul ba-ro bo-nae-ji a-neun geo-seu-ro mi-ru-eo bo-a a-jik gyeol-jeong-eul nae-ri-ji mo-tan mo-yang-im-ni-da.
Translation: Judging from the fact that no immediate reply was sent, it seems that a decision has not yet been made.

The lack of an immediate reply is an observable action, but it does not directly prove that the person is undecided, so “모양이다” is used.

Example:
회의에서 세부 사항을 계속 확인한 것으로 미루어 보아 그 제안에 관심이 큰 것 같습니다.
Romanization: hoe-ui-e-seo se-bu sa-hang-eul gye-sok hwak-in-han geo-seu-ro mi-ru-eo bo-a geu je-a-ne gwan-si-mi keun geot gat-seum-ni-da.
Translation: Judging from the repeated questions about the details during the meeting, there seems to be considerable interest in the proposal.

Repeatedly asking about details supports the judgement that the person is interested, but it cannot replace a formal decision.

Example:
관련 자료를 따로 보관한 것으로 미루어 보아 처음부터 다시 검토할 계획이었던 듯합니다.
Romanization: gwal-lyeon ja-ryo-reul tta-ro bo-gwan-han geo-seu-ro mi-ru-eo bo-a cheo-eum-bu-teo da-si geom-to-hal gye-hoe-gi-eot-deon deu-tam-ni-da.
Translation: Judging from the fact that the relevant materials were stored separately, it seems that there had been a plan to review the matter again from the beginning.

Storing the materials is an action that has already occurred, while the plan to conduct another review is an intention inferred from that action.

How Does “-(으)로 미루어 보아” Differ from Similar Korean Inference Patterns?

“-(으)로 미루어 보아,” “-(으)ㄴ/는 것으로 보아” and “-나 보다” can all express inference.

However, they differ in how explicitly they state the evidence and in their degree of formality.

“-아/어서” is not an inference pattern. It explains a direct cause.

Point of Comparison	-(으)로 미루어 보아	-(으)ㄴ/는 것으로 보아	-나 보다	-아/어서	-에 비추어 보아
Relationship between clauses	Evidence → inference	Observed content → inference	Present situation → guess	Cause → result	Standard or precedent → evaluation
Is the basis explicitly stated?	Very explicit	Explicit	Not always fully explained	Explains a cause	Clearly identifies a reference standard
Formality	Formal and written	Neutral to formal	Conversational	Neutral	Very formal
Common contexts	Reports, news and analysis	Conversation, explanation and writing	Everyday conversation	General causal sentences	Law, policy and formal commentary
Common following expressions	듯하다, 것으로 보이다	것 같다, 모양이다	-나 보다	Factual result	판단된다, 필요하다
Is the conclusion confirmed?	Not yet fully confirmed	Not yet fully confirmed	Subjective guess	The result usually occurred	An evaluation based on a standard

The Difference Between “-(으)로 미루어 보아” and “-아/어서”: Evidence Is Not a Cause

The first part of “-(으)로 미루어 보아” presents evidence or a sign.

The first part of “-아/어서” states the actual cause that produces the following result.

❌ Imprecise:
구름의 모양으로 미루어 보아 비가 왔어요.
The first part indicates an inference based on the shape of the clouds, but the second part directly presents the rain as an established past fact. The meanings do not align.

✅ Correct:
구름의 모양으로 미루어 보아 곧 비가 올 것 같아요.
Judging from the shape of the clouds, it looks as though it will rain soon.

✅ Causal sentence:
비가 와서 경기가 취소됐어요.
The match was cancelled because it rained.

The shape of the clouds is only evidence used to predict rain.

The actual rain is the cause of the match being cancelled.

The two grammar patterns cannot be exchanged simply because both may be translated with expressions such as “because” or “judging from.”

“미루어 보아” and “것으로 보아”: Different Levels of Formality

Both patterns indicate an inference based on evidence, and their meanings are very similar.

“-(으)로 미루어 보아” places greater emphasis on the reasoning process and appears more frequently in formal analysis.

“-(으)ㄴ/는 것으로 보아” is shorter and sounds more natural in general explanations and conversation.

✅ Formal analysis:
최근 기록으로 미루어 보아 문제가 반복되고 있는 것으로 보입니다.
Judging from the recent records, the problem appears to be recurring.

✅ General explanation:
같은 문제가 계속 생기는 것으로 보아 아직 해결되지 않은 것 같아요.
Judging from the fact that the same problem keeps occurring, it does not seem to have been resolved yet.

Use “-(으)로 미루어 보아” when you need to place data or evidence clearly before the conclusion.

When you simply want to make a judgement based on a phenomenon that has already been mentioned, “것으로 보아” is usually more concise.

The Difference Between “-(으)로 미루어 보아” and “-나 보다”: Analytical Judgement Versus a Casual Guess

“-나 보다” is commonly used in everyday conversation to express a natural guess based on the current situation.

It does not always explain the basis of the inference in detail and sounds lighter than “-(으)로 미루어 보아.”

✅ Formal:
사무실 불이 꺼진 것으로 미루어 보아 모두 퇴근한 것 같습니다.
Judging from the fact that the office lights are off, it seems that everyone has gone home.

✅ Conversational:
사무실 불이 꺼져 있네. 다들 퇴근했나 봐.
The office lights are off. It looks like everyone has gone home.

When casually saying “It looks like…” in everyday conversation, “-나 보다” is more natural.

Use “-(으)로 미루어 보아” in news, reports or situations where the basis for the judgement needs to be stated.

The Difference Between “-(으)로 미루어 보아” and “-에 비추어 보아”: Evidence for an Inference Versus a Standard for Evaluation

“-에 비추어 보아” means evaluating something by referring to a law, principle, previous case or established standard.

It does not merely involve guessing from signs. It contains the idea of comparing the present situation against a particular standard.

✅ Inference from evidence:
현재 자료로 미루어 보아 일정이 늦어질 가능성이 큽니다.
Judging from the current data, there is a high possibility that the schedule will be delayed.

✅ Evaluation against a standard:
과거 사례에 비추어 보아 이번 결정도 재검토할 필요가 있습니다.
In light of previous cases, this decision also needs to be reviewed.

The first sentence uses data to predict a future outcome.

The second uses previous cases as a standard for evaluating the current decision.

Practical Uses of “-(으)로 미루어 보아”: System Records, Meetings and Historical Materials

“-(으)로 미루어 보아” frequently appears in situations where facts and analysis need to be clearly separated.

News reports may first list records from the scene, testimony or publicly available data and then explain how far the current evidence permits a conclusion.

Workplace reports similarly place data and system records before the analysis to avoid presenting an unconfirmed cause as an established conclusion.

This tone is not intended to make the statement deliberately vague.

It clearly identifies the status of the information. The first part is a fact that can currently be confirmed, while the second is a judgement that may change if new evidence appears.

Situation 1: Inferring the Starting Time of an Error from System Records

A: 오류가 언제부터 시작된 걸까요?
o-ryu-ga eon-je-bu-teo si-jak-doen geol-kka-yo?
When did the error begin?

B: 접속 기록으로 미루어 보아 어젯밤 열한 시쯤 시작된 것 같습니다.
jeop-sok gi-ro-geu-ro mi-ru-eo bo-a eo-jet-ppam yeol-han si-jjeum si-jak-doen geot gat-seum-ni-da.
Judging from the access records, it appears to have started at around 11 p.m. last night.

📌 Grammar point: “접속 기록” is verifiable data, while “시작된 것 같습니다” presents the estimated time inferred from those records. If a later investigation confirms the time, “확인 결과” may be used instead.

Situation 2: Judging Receptiveness to a Proposal from Reactions in a Meeting

A: 참석자들이 새 제안에 긍정적인 것 같았나요?
cham-seok-ja-deu-ri sae je-a-ne geung-jeong-jeo-gin geot ga-tan-na-yo?
Did the participants seem positive about the new proposal?

B: 질문 내용과 반응으로 미루어 보아 대체로 관심이 있었던 듯합니다.
jil-mun nae-yong-gwa ban-eung-eu-ro mi-ru-eo bo-a dae-che-ro gwan-si-mi i-sseot-deon deu-tam-ni-da.
Judging from their questions and reactions, they seem to have been generally interested.

📌 Grammar point: The questions and reactions can serve as evidence, but they do not prove that everyone agreed with the proposal. For this reason, the following clause uses “듯하다.”

Situation 3: Inferring the Date of a Building from Preserved Records

A: 이 건물은 정확히 언제 세워졌나요?
i geon-mu-reun jeong-hwa-ki eon-je se-wo-jyeon-na-yo?
When exactly was this building constructed?

B: 남아 있는 기록으로 미루어 보아 조선 후기에 세워진 것으로 보입니다.
na-ma in-neun gi-ro-geu-ro mi-ru-eo bo-a jo-seon hu-gi-e se-wo-jin geo-seu-ro bo-im-ni-da.
Judging from the surviving records, it appears to have been constructed during the late Joseon period.

📌 Grammar point: The surviving records support only an approximate historical period and do not provide an exact year. Therefore, “것으로 보입니다” is used instead of making a definite statement.

Cultural Notes

Korean news reports and formal documents often distinguish between “확인되다” and “추정되다.”

The former indicates that something has been confirmed, while the latter means that it has been inferred from the currently available information.

“-(으)로 미루어 보아” generally belongs to the latter category and should not be mixed with confirmed information.

When inferring a person’s intentions, expressions such as “것 같다,” “듯하다” and “모양이다” help the speaker avoid making a direct assertion on the person’s behalf.

This is particularly important in meeting records and commentary about individuals, where outward behaviour can only serve as evidence and cannot be treated as identical to a person’s inner thoughts.

The formal tone of “미루어 보아” comes from its complete presentation of the basis for the judgement.

When friends simply want to say that someone appears tired, “피곤한가 봐” is sufficient. There is no need to turn every sentence into an analytical report.

Comparing Korean “-(으)로 미루어 보아” with Japanese “〜から判断すると”

◆ Similar Japanese Grammar: “〜から判断すると”

The Japanese expression “〜から判断すると” indicates that a judgement is made based on data, a situation, a facial expression or a person’s behaviour.

Its function is similar to the Korean “-(으)로 미루어 보아.”

Both expressions first present the evidence and then place a conclusion that has not yet been fully confirmed in the following clause.

Japanese also uses “〜から見て,” “〜ことから” and “〜から考えると.”

In formal analysis, “〜から判断すると” most directly corresponds to the inferential tone of the Korean expression.

Example:
彼の表情から判断すると、結果はあまり良くなかったようです。
Kana: かれのひょうじょうからはんだんすると、けっかはあまりよくなかったようです。
Translation: Judging from his expression, the result does not appear to have been very good.

Both “表情から判断すると” and the Korean “표정으로 미루어 보아” use facial expression as the basis for an inference, while the following clause retains an uncertain form.

Example:
記録から判断すると、問題は昨夜から発生していたと考えられます。
Kana: きろくからはんだんすると、もんだいはさくやからはっせいしていたとかんがえられます。
Translation: Judging from the records, the problem is believed to have started last night.

“考えられます” maintains an analytical tone and does not present the still-unconfirmed starting time as a definite fact.

Example:
質問の内容から判断すると、その提案に関心があるようです。
Kana: しつもんのないようからはんだんすると、そのていあんにかんしんがあるようです。
Translation: Judging from the content of the questions, there appears to be interest in the proposal.

Both Korean and Japanese infer an internal attitude from outward behaviour, so the following clause needs to maintain some distance from a definitive statement.

◆ Core Difference from “-(으)로 미루어 보아”:

The basic functions of the two expressions are very similar.

Korean uses the particle “-(으)로” to mark the basis of the judgement, while Japanese commonly uses “〜から” to indicate the starting point of the inference.

The Korean “미루어 보아” sounds formal, and the Japanese “〜から判断すると” is likewise common in analysis, explanation and more complete conversational statements.

The central distinction in “-(으)로 미루어 보아” is between known evidence and an inferred conclusion.

The first part presents a facial expression, record, figure, action or trace from the scene. The following clause then uses expressions such as “것 같다,” “듯하다,” “것으로 보이다” or “판단되다.”

In formal writing, this pattern prevents unconfirmed information from being presented as fact.

When simply saying “It looks like…” in everyday conversation, “-나 보다” or “것 같다” is sufficient.

Use “-(으)로 미루어 보아” when the basis for the judgement also needs to be explained.

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