目錄
The Japanese word 「何」 may be only one character, but it is not always read as 「なに」 once it appears in a sentence. 「何を食べますか」 uses 「なにを」, while 「これは何ですか」 changes to 「なんですか」. With 「何人」, you even need to know whether the question is asking how many people there are or what nationality someone is. The difficulty is not the word itself, but the fact that the same 「何」 changes its reading according to what follows it and what the sentence means. This is why memorizing only “「何」＝「なに」” quickly leads to exceptions. The combinations that appear most often in daily life are not as chaotic as they may seem. 「何が／何を」, 「何ですか／何の」, and 「何人／何時」 each follow fairly consistent conventions. Looking at these groups together makes it much easier to keep 「なに」 and 「なん」 straight the next time they appear.
How Do You Distinguish 「なに／なん」 for Japanese 「何」? Basic Pronunciation Rules
The Japanese word 「何」 basically means “what,” and when you look it up by itself in a dictionary, the first reading you will usually see is 「なに」. In a sentence, however, its reading is affected by the particle, copular expression, or counter that follows it, so it may be read as 「なん」.
The easiest initial distinction to remember is this: when 「何」 directly asks about a thing or a piece of information, it often retains the reading 「なに」; before 「です／だ／の」 or when asking about a quantity, it often becomes 「なん」.
| Type | Common reading | Examples |
| Followed by 「が／を／か／も」 | なに | 何が、何を、何か、何も |
| Followed by 「です／だ」 | なん | 何ですか、何だ |
| Followed by 「の＋noun」 | なん | 何の本、何の仕事 |
| Asking a quantity with 「何＋counter」 | なん | 何人、何枚、何歳、何時 |
| Certain fixed compounds | Memorize individually | 何語＝なにご、何曜日＝なんようび |
| The reading can change with the meaning | なに／なん | 何で、何人、何色 |
The last two types require particular attention. Japanese readings cannot be determined mechanically from only the first sound that follows 「何」, because fixed words and the meaning itself can also affect the pronunciation.
How Do You Read 「何＋が／を／か／も」? The Basic Reading Is 「なに」
When 「何」 functions as an ordinary question word and is followed by 「が」「を」「か」, or 「も」, its standard reading is usually 「なに」. These sentences generally ask directly about a particular thing, piece of information, or option, which also makes 「なに」 the reading learners encounter most often at the beginning of their Japanese studies.
- Example: 何が食べたいですか。
Kana: なにがたべたいですか。
Translation: What would you like to eat?
「何が」 is read as 「なにが」 and asks about the specific thing the person wants to eat. - Example: 昨日、何を買いましたか。
Kana: きのう、なにをかいましたか。
Translation: What did you buy yesterday?
The standard reading of 「何を」 is 「なにを」.
In actual pronunciation, 「を」 normally sounds close to 「お」, so what you hear will be close to 「なにお」. - Example: 何か飲みますか。
Kana: なにかのみますか。
Translation: Would you like something to drink?
The standard form 「何か」 is read as 「なにか」 and refers to something that has not yet been specified.
「何も」 follows the same pattern.
- 何もない：なにもない
- 何も食べない：なにもたべない
You may occasionally hear 「なんか」 or 「なんも」 in conversation, but this does not mean that the standard forms 「何か」 and 「何も」 should always be read with 「なん」.
How Do You Read 「何ですか／何だ／何の」? The Basic Reading Is 「なん」
「何ですか」「何だ」, and 「何の〜」 are usually read with 「なん」. These combinations are extremely common, so the fastest approach is to memorize them as fixed units.
「これは何ですか」 is not normally read as 「これはなにですか」. The standard reading is 「これはなんですか」. Likewise, 「何の本ですか」 is read as 「なんのほんですか」.
- Example: これは何ですか。
Kana: これはなんですか。
Translation: What is this?
「何＋です」 is usually read as 「なんです」, one of the most basic and common uses of 「なん」. - Example: あの音は何だろう。
Kana: あのおとはなんだろう。
Translation: I wonder what that sound is.
「何＋だ」 is read as 「なんだ」, while the following 「だろう」 adds a sense of wondering or speculation. - Example: これは何の料理ですか。
Kana: これはなんのりょうりですか。
Translation: What kind of dish is this?
In 「何の＋noun」, 「何」 is read as 「なん」 and asks about a type, affiliation, or content.
This set can be memorized directly as follows:
- 何ですか → なんですか
- 何だ → なんだ
- 何の → なんの
How Do You Read Japanese 「何＋Counter」? People, Time, and Quantities Usually Use 「なん」
When 「何」 appears before a counter to ask how many, how many people, how old, or what time, it is usually read as 「なん」. Here, 「何」 does not independently ask “what.” Instead, it combines with the following unit to form a single quantity question word.
「何人」 asks how many people, 「何枚」 asks how many flat items, and 「何歳」 asks someone’s age. 「何時」 is translated as “what time,” but it belongs to the same structural category.
| Japanese | Reading | Meaning |
| 何人 | なんにん | how many people |
| 何枚 | なんまい | how many flat items |
| 何本 | なんぼん | how many long objects, bottles, or sticks |
| 何個 | なんこ | how many items |
| 何回 | なんかい | how many times |
| 何階 | なんがい | which floor |
| 何歳 | なんさい | how old |
| 何年 | なんねん | which year / how many years |
| 何月 | なんがつ | which month |
| 何日 | なんにち | which date / how many days |
| 何曜日 | なんようび | which day of the week |
| 何時 | なんじ | what time |
| 何分 | なんぷん | how many minutes |
How Do You Read 「何＋Counter」? A Guide to 「なんにん／なんまい／なんじ」
Quantity expressions are best memorized as complete units because the counter itself may also undergo voicing or other sound changes. For example, 「何本」 is not 「なんほん」 but 「なんぼん」, while 「何分」 is commonly read as 「なんぷん」.
- Example: 何人で予約しますか。
Kana: なんにんでよやくしますか。
Translation: For how many people should we make the reservation?
Here, 「人」 is the counter for people, so 「何人」 is read as 「なんにん」. - Example: 映画は何時から始まりますか。
Kana: えいがはなんじからはじまりますか。
Translation: What time does the movie start?
「何時」 asks for a specific time and has the fixed reading 「なんじ」. - Example: チケットは何枚必要ですか。
Kana: チケットはなんまいひつようですか。
Translation: How many tickets do you need?
「枚」 is the counter for thin, flat objects, so 「何枚」 is read as 「なんまい」.
How Do You Read Japanese 「何人」? The Meaning Difference Between 「なんにん／なにじん」
「何人」 is a typical case in which the same kanji has different readings depending on the question being asked. When asking how many people there are, 「人」 is the counter 「にん」, so the word is read as 「なんにん」. When asking what country someone is from, 「人」 is read as 「じん」, and the whole word becomes 「なにじん」.
| Written form | Reading | What it asks |
| 何人 | なんにん | how many people |
| 何人 | なにじん | what nationality / from which country |
- Example: 参加者は何人ですか。
Kana: さんかしゃはなんにんですか。
Translation: How many participants are there?
This sentence asks about a quantity, so the reading is 「なんにん」. - Example: あの人は何人ですか。
Kana: あのひとはなにじんですか。
Translation: What nationality is that person?
If the context is asking about nationality, 「何人」 is read as 「なにじん」. Taken by itself, however, this sentence can be confused with a question about the number of people, so the intended meaning is usually determined from the context in an actual conversation. - Example: このツアーには何人参加しますか。
Kana: このツアーにはなんにんさんかしますか。
Translation: How many people will join this tour?
「何人」 directly specifies the number of participants and has no nationality meaning, so it can only be read as 「なんにん」.
How Do You Read Japanese 「何色」? The Difference Between 「なにいろ／なんしょく」
「何色」 is another useful example showing that 「なに／なん」 is not simply a pronunciation change.
「何色（なにいろ）」 asks what color something is, while 「何色（なんしょく）」 usually asks about the number of colors—in other words, how many colors there are.
| Written form | Reading | Meaning |
| 何色 | なにいろ | what color |
| 何色 | なんしょく | how many colors |
- Example: このバッグは何色がありますか。
Kana: このバッグはなにいろがありますか。
Translation: What colors does this bag come in?
The question asks which specific colors are available, so 「何色」 is read as 「なにいろ」. - Example: 一番好きな色は何色ですか。
Kana: いちばんすきないろはなにいろですか。
Translation: What is your favorite color?
The answer could be a specific color such as red, blue, or black, so 「なにいろ」 is used. - Example: この商品は全部で何色ありますか。
Kana: このしょうひんはぜんぶでなんしょくありますか。
Translation: How many colors does this product come in altogether?
「全部で」 already shifts the question toward quantity, so 「何色」 is read as 「なんしょく」.
「何語」 belongs to a similar category. It asks what language something is and has the standard reading 「なにご」. You cannot assume that every 「何＋noun」 combination uses 「なん」.
How Do You Read Japanese 「何で」? The Difference Between Reason and Means in 「なんで／なにで」
「何で」 is one of the most practical exceptions among the readings of 「何」 because both 「なんで」 and 「なにで」 occur, and their meanings are not completely the same.
「なんで」 can ask “why” and, depending on the context, may also ask “by what means.” 「なにで」 places a clear focus on the means involved, such as a tool, form of transportation, or material.
| Form | Main meaning | Example |
| なんで | why | なんで行かないの？ |
| なんで | by what means; possible in conversation | なんで来たの？ |
| なにで | with what tool, transportation, or material | なにで書きますか？ |
Use ① of 「何で」｜「なんで」 Meaning “Why”
This is the extremely common conversational use of 「なんで」. Here, 「で」 cannot simply be understood as the particle marking an instrument. The entire form 「なんで」 asks for a reason.
- Example: 何で昨日来なかったの？Kana: なんできのうこなかったの。Translation: Why didn’t you come yesterday? The question asks for the reason the person did not come, so the reading is 「なんで」.
- Example: 何でそんなに急いでいるんですか。Kana: なんでそんなにいそいでいるんですか。Translation: Why are you in such a hurry? The sentence asks for the reason behind the person’s hurry, not what tool they are using.
- Example: 何でこの店を選んだんですか。Kana: なんでこのみせをえらんだんですか。Translation: Why did you choose this restaurant? Here, 「なんで」 can be replaced with the more neutral 「どうして」.
Use ② of 「何で」｜「なにで」 Clearly Asking About a Tool, Material, or Form of Transportation
When you need to avoid ambiguity with “why,” 「なにで」 can clearly mean “using what” or “by what means.”
- Example: ここまで何で来ましたか。
Kana: ここまでなにできましたか。
Translation: What did you take to get here?
When read as 「なにで」, 「で」 clearly marks transportation, so the answer may be a train, bus, or taxi. - Example: この名前は何で書けばいいですか。
Kana: このなまえはなにでかけばいいですか。
Translation: What should I use to write this name?
The answer may be a ballpoint pen or pencil, so the reading is 「なにで」. - Example: この料理は何で作られていますか。
Kana: このりょうりはなにでつくられていますか。
Translation: What is this dish made with?
「なにで」 asks about a material or means, not the reason the dish was made.
Without context, 「なんで来たの？」 can have two interpretations: “Why did you come?” or “How did you get here?” To make the question clear, use 「どうして来たの？」 to ask for a reason and 「なにで来たの？」 to ask about transportation.
Summary of the Difference Between Japanese 「なに／なん」: A Reading Guide and Common Exceptions
There is no single pronunciation formula for 「何」 that covers every situation. When reading it in practice, you can begin with the following sequence.
| Situation | Preferred reading | Example |
| 「何＋が／を／か／も」 | なに | なにが、なにを、なにか、なにも |
| 「何＋です／だ」 | なん | なんです、なんだ |
| 「何＋の＋noun」 | なん | なんの本 |
| 「何＋counter」 asking a quantity | なん | なんにん、なんまい、なんさい |
| Fixed words asking a specific type | Determine individually | なにいろ、なにご |
| 「何で」 asking for a reason | なんで | why |
| 「何で」 clearly asking about a means | なにで | with what |
| Fixed words and idioms | Memorize individually | なんとなく、なにげなく |
▌How Do You Read 「何ですか」? The Basic Reading Is 「なんですか」
❌ Unnatural: これはなにですか。
✅ Natural: これはなんですか。
「何」 is normally read as 「なん」 before 「です」. Finding 「何＝なに」 in a dictionary does not mean the reading remains the same in every sentence.
▌How Do You Read 「何を」? The Standard Reading Is 「なにを」
❌ Unnatural: なんを食べますか。
✅ Natural: なにを食べますか。
What actually affects the reading is the structure immediately following 「何」, not whether the sentence ends in 「です／ます」.
▌Is Every 「何＋Kanji」 Read as 「なん」? Fixed Compounds Must Be Considered Individually
❌ Unnatural: なんごを勉強していますか。
✅ Natural: なにごを勉強していますか。
「何語」 has the fixed reading 「なにご」 and means “what language.” By contrast, 「何曜日」 has the fixed reading 「なんようび」. Compounds still need to be memorized as complete words.
What Is the Difference Between Japanese 「何か（なにか）」 and 「なんか」? Standard Pronunciation and Conversational Usage
The standard form 「何か」 is read as 「なにか」 and means “something” or “what.” You may indeed hear 「なんか」 in everyday conversation, but 「なんか」 is not necessarily only a pronunciation change from 「なにか」.
「なんか」 can also function as a conversational particle with nuances such as “something like,” “somehow,” or “it feels like.” When you see 「なんか」, you therefore need to consider what function it performs in that particular sentence.
- Example: 何か食べますか。
Kana: なにかたべますか。
Translation: Would you like something to eat?
The standard 「何か」 is read as 「なにか」 and refers to food that has not yet been specified. - Example: なんか食べる？
Kana: なんかたべる。
Translation: Want something to eat?
In conversation, 「なんか」 may replace the fuller 「なにか」, and the sentence as a whole is more casual than the previous example. - Example: 今日はなんか疲れた。
Kana: きょうはなんかつかれた。
Translation: I feel kind of tired today.
Here, 「なんか」 is no longer simply asking “what.” It introduces a feeling that is difficult to describe precisely.
Practical Japanese 「何」 for Travel in Japan: Common 「なに／なん」 Readings in Restaurants and Stations
When traveling, you will encounter 「何」 almost every day. In restaurants, you will hear 「何名様」 and 「何にしますか」; at stations, 「何番線」 and 「何時」; and while shopping, 「何色」 and 「何枚」. It is perfectly normal for the same kanji to switch readings repeatedly within a single conversation.
The most practical approach is not to stop and work through the rules every time you see 「何」, but to memorize high-frequency combinations as units: 「なんじ」「なんにん」「なんの」「なにが」「なにを」「なにに」. In real listening, these combinations also tend to occur as complete chunks.
▌Situation ①｜Asking the Number of Diners at a Restaurant
A：何名様ですか。
なんめいさまですか。
How many people are in your party?
B：二人です。
ふたりです。
Two.
📌 Grammar Point: 「名」 is a more polite counter for people, and 「何名様」 has the fixed reading 「なんめいさま」.
▌Situation ②｜Choosing a Dish at a Restaurant
A：何にしますか。
なににしますか。
What will you have?
B：カレーにします。
カレーにします。
I’ll have the curry.
📌 Grammar Point: In this pattern, 「何に」 is read as 「なにに」. 「〜にする」 expresses choosing one option from several possibilities, so the sentence asks what the person will choose.
▌Situation ③｜Checking a Train Time
A：次の電車は何時ですか。
つぎのでんしゃはなんじですか。
What time is the next train?
B：十時二十分です。
じゅうじにじゅっぷんです。
10:20.
📌 Grammar Point: 「何時」 is a time question word with the fixed reading 「なんじ」. Even though 「何」 can be read as 「なに」 on its own, it cannot be pronounced 「なにじ」 here.
Cultural Notes:
- Japanese restaurants commonly use 「何名様ですか」 rather than 「何人ですか」. Both can ask how many people there are, but 「名様」 carries a polite customer-service tone, so it is especially common in restaurants, hotels, and reservation counters.
- 「なんで」 is often used to ask “why” in everyday conversation. If you say only 「なんで来たの」 when asking about transportation, the sentence may be ambiguous. To ask clearly about the means of transportation, 「なにで来たの」 or 「どうやって来たの」 is clearer.
- 「なに／なん」 appears in many fixed combinations, and everyday pronunciation cannot always be calculated from a rule on the spot. Expressions such as 「なんとなく」 and 「なにげなく」 are used as complete units, so memorizing them directly is more practical than breaking them apart.
How Does Japanese 「何（なに／なん）」 Compare with Korean 「뭐／무엇／몇」?
Japanese uses the same kanji 「何」 for both “what” and “how many,” then reads it as 「なに」 or 「なん」 depending on what follows. Korean separates these more clearly: 「뭐／무엇」 usually asks “what,” while 「몇」 normally asks about a quantity.
For this reason, Japanese 「何人」「何時」, and 「何枚」 cannot all be translated directly with Korean 「뭐」. These 「何＋counter」 combinations generally need to become 「몇＋unit」 in Korean.
◆ Similar Expressions: Korean 「뭐／무엇／몇」
「무엇」 means “what” and is the fuller form, while 「뭐」 is the contraction used most often in daily conversation. Functionally, they are close to the general Japanese question word 「何（なに）」.
- Example: 뭘 먹어요?
Romanization: mwol meo-geo-yo?
Translation: What are you eating?
Korean 「뭘」 is the contracted form of 「뭐를」 and corresponds to 「何を（なにを）」 in Japanese 「何を食べますか」. - Example: 이건 뭐예요?
Romanization: i-geon mwo-ye-yo?
Translation: What is this?
Korean continues to use 「뭐」, while Japanese reads the expression as 「何ですか（なんですか）」 because 「です」 follows 「何」. - Example: 몇 명이에요?
Romanization: myeot myeong-i-e-yo?
Translation: How many people are there?
Korean switches to 「몇」 to ask about a quantity, corresponding to Japanese 「何人（なんにん）」 or the more polite 「何名様（なんめいさま）」.
◆ The Core Difference from Japanese 「何（なに／なん）」:
In Japanese, the reading of the same 「何」 changes according to the following structure, and 「何」 continues to be used in quantity questions. Korean more often separates “what” from “how many,” using 「뭐／무엇」 to ask about content and 「몇」 to ask about a quantity. Viewed side by side, the most error-prone part of Japanese is not the English meaning of 「何」, but the way its reading changes with the word that follows it.
The most practical way to remember whether 「何」 is read as 「なに」 or 「なん」 is to learn it together with what follows. Memorize 「何を」 as 「なにを」 and 「何ですか」 directly as 「なんですか」. Quantity expressions such as 「何人」「何時」, and 「何枚」 are also easier to learn as complete units than through a single pronunciation formula. With more troublesome forms such as 「何で」「何人」, and 「何色」, look at what the sentence is actually asking, because when the reading changes, the meaning often changes as well. The combinations that truly need to become familiar are the ones that appear repeatedly in daily life. After seeing and hearing them several times, recognizing them naturally will become faster than trying to memorize a rule mechanically.
FAQs
When 「何」 appears by itself, its basic reading is usually learned as 「なに」. In a sentence, however, it may become 「なん」 depending on the following particle, pattern, or counter. Rather than assigning one fixed pronunciation to 「何」, check it together with the word that follows.
When 「何」 is followed by 「です／だ」, it is usually read as 「なん」, so the standard forms are 「なんですか」 and 「なんだ」. By contrast, 「何が」 and 「何を」 are read as 「なにが」 and 「なにを」. It is easiest to memorize the two sets as fixed combinations.
Both readings are possible, but their meanings may differ. 「なんで」 most often asks “why” and can also ask about a method in conversation, while 「なにで」 more clearly asks about a tool, material, or form of transportation. For example, 「なにで来ましたか」 asks what someone took to get there.
The two readings ask different questions. 「なんにん」 asks how many people there are, as in 「参加者は何人ですか」, while 「なにじん」 asks about nationality. To determine the reading, consider whether 「人」 is the counter 「にん」 or the nationality suffix 「じん」.
Begin with three high-frequency rules: 「何が／何を／何か／何も」 usually use 「なに」; 「何です／何だ／何の」 use 「なん」; and 「何＋counter」 usually uses 「なん」 when asking about a quantity. For forms whose meanings affect the reading, such as 「何で」「何人」, and 「何色」, check the context separately.