Japanese writing systems: why three scripts, and what each one is telling you3つの文字: なぜ日本語は、漢字・ひらがな・カタカナを一度に使うのか
Japanese uses hiragana, katakana, and kanji together because each script handles a different part of the job: kana spell sounds and grammatical endings, and kanji carry the written cores of many words. Those roles are conventions rather than laws, so a perfectly ordinary sentence does not have to contain all three. Learn the two kana sets alongside useful words, then let kanji arrive inside words you already understand.
日本語が3つの文字を使うのは、それぞれ仕事がちがうからです。漢字は意味を、ひらがなは文法を、カタカナは「外国の言葉・強調」を表します。ふつうの文には、3つとも必要です。そして、この組み合わせがあるから、スペースがなくても読めます。
Seeing three scripts on one page can make Japanese look like three separate languages stacked on top of each other. It is one language written with several complementary tools, and you can understand how those tools divide the work long before you recognise every character. This guide explains what to notice in an ordinary sentence, where the simple rules stop being reliable, and how to practise without treating each unfamiliar symbol as an isolated memorisation task.
The basics
Three scripts, three usual roles
Hiragana and katakana together are called kana. Each set has 46 basic characters in the modern teaching charts, with further sounds written through diacritic marks and combinations. The two sets represent the same basic sound system: か and カ both represent ka. They are usually described as syllabaries, although the more precise unit for Japanese timing is the mora, or rhythmic beat.
Kanji are characters tied to meaningful elements of words and to readings. Calling them pictures of ideas is misleading. A character has conventional pronunciations, and many characters contain components that historically supplied clues to sound. Your goal is to read actual words, not to swap a symbol for an English gloss.
| Script | Japanese name | Typical uses | Examples from this article |
|---|---|---|---|
| Hiragana | ひらがな | Particles, inflectional endings, many whole words | は, を, ます, ありがとう |
| Katakana | カタカナ | Many loanwords, foreign names, sound effects, emphasis | コーヒー, ペン, ドキドキ |
| Kanji | 漢字 | Many nouns, and the written stems of verbs and adjectives | 山, 日本語, 飲 |
These are starting points, not permanent assignments. A writer can choose hiragana for a word that also has a common kanji spelling, and katakana can represent a native Japanese word purely for visual effect. The Japan Foundation publishes free hiragana and katakana practice resources for learning the shapes and then reading them inside words.
Read one sentence in layers
私は毎日コーヒーを飲みます。 — I drink coffee every day.
Here 私 means “I” and 毎日 means “every day,” both written in kanji. コーヒー is “coffee,” written in katakana because it is a loanword. The hiragana は and を are particles, and 飲みます combines the kanji 飲 with the hiragana みます to write one polite verb form.
Notice that み belongs to the written verb stem; it is not a separate particle floating between words. The useful beginner observation is that a single word can mix kanji and kana freely, so you should never assume that a change of script marks the start of a new word.
これはペンです。 — This is a pen.
This sentence uses hiragana and katakana with no kanji at all, and it is completely ordinary. The demonstrative これ and the polite ending です are normally written in hiragana, while ペン is a loanword in katakana.
ありがとう。 — Thank you.
A complete, natural expression can use hiragana alone. The three scripts are available resources, not a checklist that every sentence has to satisfy.
Why is Japanese written without spaces?
Conventional Japanese prose does not separate every word with a space. Familiar vocabulary, particles, endings, punctuation, and script changes all help readers find the structure. Mixed scripts give useful visual clues, but script boundaries are not an exact replacement for English spaces.
今日は日本語を勉強します。 — I will study Japanese today.
今日, 日本語, and 勉強 are recognisable units for a reader who already knows them, and the particles は and を show how those units relate. However, consecutive kanji can form one compound or several separate words, so vocabulary and grammar remain essential to segmentation.
Beginner materials sometimes insert spaces to make this easier. An all-hiragana passage can actually be harder to segment than a mixed one, which is why a children's book is not automatically easier than a newspaper article. Subject matter, sentence length, vocabulary, and reading support all affect difficulty.
Beyond the basics
Kana spell sound, including timing
Learning the basic chart is only the beginning. You also need voiced forms such as が and ガ, combined sounds such as きゃ and キャ, and the small っ or ッ. In きゃ, the small ゃ merges with き into a single beat. The small っ marks a consonant hold before the next consonant.
| Written form | Reading | Beats | What to notice |
|---|---|---|---|
| きや | きや | 2 | Full-size や is its own beat |
| きゃ | きゃ | 1 | Small ゃ merges into one beat |
| きて | きて | 2 | No consonant hold |
| きって | きって | 3 | Small っ adds a held beat |
| コヒ | コヒ | 2 | No long vowels written |
| コーヒー | コーヒー | 4 | Each ー extends the vowel before it |
切手を買います。 — I will buy a postage stamp.
切手 is read きって, with the held consonant that the small っ writes in kana. Kana spelling also has its own conventions worth learning early: the particles は, へ, and を are pronounced wa, e, and o, rather than following their chart labels. Vowel length is equally decisive, and my guide to long vowels and the ningyo problem shows how much a single extra beat can change.
Kanji readings belong to words
Two useful terms are 音読み, a Chinese-derived reading, and 訓読み, a native Japanese reading. A single kanji may carry several of each. These labels describe broad patterns, but they are not a dependable formula for pronouncing an unfamiliar word.
あの山は高いです。 — That mountain is tall.
Here 山 is read やま, a native reading. In 火山, meaning “volcano,” the same character is read さん. Learn 山 with やま and 火山 with かざん as separate vocabulary items rather than trying to recite every possible reading first. Some words go further and attach a reading to a whole compound, a pattern explained in jukujikun and irregular kanji readings.
The hiragana attached to a kanji in an inflected word are called okurigana, written 送り仮名. Compare 高い, “tall,” with 高かった, “was tall”: the kanji stays put while the trailing kana change. The verb 飲む, “to drink,” behaves the same way when it becomes 飲みます.
Katakana does more than mark loanwords
Many familiar examples are loanwords, or 外来語: コーヒー, ペン, and テレビ. A katakana word is not necessarily English, though, and even a word borrowed from English may have shifted in meaning or pronunciation. Read it as a Japanese word first, as wasei-eigo and other made-in-Japan English demonstrates repeatedly.
ドキドキします。 — My heart is pounding.
ドキドキ represents a pounding-heart sensation, and you may also see どきどき in hiragana. Neither spelling turns it into a foreign word. For many more of these, see Japanese onomatopoeia.
ここはダメです。 — This place will not do.
ダメ may also appear as だめ or 駄目. Katakana makes the spelling visually distinctive, but only the situation tells you whether the speaker is rejecting a location, refusing permission, or judging suitability. Script choice alone never supplies the full meaning.
Furigana helps with pronunciation, not meaning
Furigana, or 振り仮名, are small kana printed above horizontal text or beside vertical text to indicate a reading. They are usually hiragana. Books for younger readers, learning materials, and some manga use furigana generously, while other texts add it only for names or unusual words.
Furigana supplies a reading, not an English definition and not a grammar explanation. When a word carries furigana, read it aloud, check its meaning in context, and then look back at the main characters. That sequence connects sound, spelling, and meaning without demanding instant memorisation.
How many kanji, and what about romaji?
The 常用漢字 list contains 2,136 characters and serves as a general-use writing guideline. It is neither a complete inventory of Japanese characters nor a guarantee of comprehension, since newspapers also contain names, specialist vocabulary, and idiom. The Agency for Cultural Affairs account of the list revision explains the change to that figure.
Romaji writes Japanese in Latin letters. It helps with initial pronunciation guidance and with keyboard input, and it is genuinely useful support. If reading Japanese is your goal, though, reading kana directly needs to become part of your routine. There is no universal deadline after which using romaji makes you a bad learner.
For a practical sequence, start with hiragana, add katakana, and meet kanji inside words you already understand, revisiting all three in short sentences. My guide to the order for learning hiragana, katakana, and kanji develops that study plan, and extensive reading with tadoku covers what to read once the kana feel steady.
Common mistakes
- Giving each script one rigid job. “Hiragana is grammar, kanji is meaning” is a rough memory aid. Hiragana writes plenty of content words, and kanji appear inside words with grammatical functions.
- Guessing a reading from a character you recognise. Knowing 山 does not tell you how 火山 is read. Confirm the whole word, and record its spelling, reading, and meaning together.
- Ignoring small kana and long vowels. Full-size や and small ゃ are not interchangeable, and neither are つ and っ. Similar katakana such as シ and ツ also need deliberate comparison.
- Treating handwriting and recognition as one skill. Reading, typing, and handwriting make different demands. Typing still requires choosing the right conversion among similar-sounding candidates.
- Choosing reading material by script alone. A page of hiragana is not automatically easy, and a page with kanji is not automatically advanced.
- Expecting script changes to act as word boundaries. 飲みます contains a script change inside a single word, so segmentation always needs vocabulary too.
Practice
Work through these ten questions before opening the answers. Focus on what the spelling tells you and what still depends on vocabulary or context.
1. In 私は毎日コーヒーを飲みます。, identify the kanji, hiragana, and katakana portions.
Show answer
Kanji: 私, 毎日, 飲. Hiragana: は, を, みます. Katakana: コーヒー. — The verb 飲みます combines kanji and hiragana inside one word.
2. Does これはペンです。 need a kanji to count as a valid Japanese sentence?
Show answer
No. — It is an ordinary sentence written with hiragana and katakana. Nothing requires a sentence to use every script.
3. What changes between 高い and 高かった, and what are the attached kana called?
Show answer
The kana change from い to かった, and they are okurigana, 送り仮名. — The meaning moves from “tall” to “was tall” while the kanji stays the same.
4. How is 山 read as the standalone word for “mountain,” and how is 火山 read?
Show answer
やま, and かざん. — Inside 火山 the character 山 is read さん, so learn the full word rather than applying one reading everywhere.
5. A manga panel uses ドキドキ. Does the katakana prove that this is an English loanword?
Show answer
No. — ドキドキ describes a pounding heart. Katakana also writes sound effects, expressive words, and plenty of native vocabulary.
6. What does furigana above a word give you, and what does it leave unexplained?
Show answer
It gives a reading only. — It does not explain the meaning, the grammatical role, or the appropriate context of the word.
7. Why is “every script change marks a word boundary” unreliable?
Show answer
Because words such as 飲みます contain a script change internally. — Word recognition, particles, endings, and context work together to segment a sentence.
8. You can already read き and や. What extra detail matters in きゃ, and what matters in コーヒー?
Show answer
Character size in きゃ, and vowel length in コーヒー. — Small ゃ makes one combined beat, while each ー extends the vowel before it.
9. How is 切手 read, and which kana convention explains the pronunciation?
Show answer
きって, with a small っ. — The small っ writes a held consonant that occupies its own beat before the following consonant.
10. In 今日は日本語を勉強します。, what are は and を doing, and how are they pronounced?
Show answer
They are particles, pronounced wa and o. — Particle spelling follows its own convention rather than the ordinary chart readings of は and を.
FAQ
Are hiragana and katakana two different alphabets? They are two character sets for the same basic sound system, so か and カ represent the same syllable. “Syllabary” is the usual label, since most characters stand for more than a single consonant or vowel. Katakana additionally uses combinations to approximate sounds found in borrowed vocabulary. Learn both sets through real words; recognising one set does not teach you the other.
How soon should I finish learning kana? There is no fixed deadline. Your pace depends on study time, prior experience, and how you practise. Recognising a chart and reading connected text comfortably are two different milestones. Short, frequent sessions with audio and whole words work better than one long push, and you can start useful reading well before your recall is perfect.
Can furigana replace learning kanji? No. It is helpful support, but most everyday texts supply little or none, and even a supplied reading leaves vocabulary and grammar to you. Use furigana to reach material slightly above your level, then revisit repeated words so their kanji become familiar. Access to a pronunciation is not the same as understanding the sentence.
Do I need to handwrite every kanji I learn? No. You can read and recognise a word long before you can reproduce it unaided. Some handwriting practice does help you notice structure, especially with characters that look alike. If your goals include forms, examinations, or handwritten notes, give handwriting its own practice slot instead of expecting recognition alone to produce it.
Why is the same word sometimes written in different scripts? Writers make choices. ダメ, だめ, and 駄目 are all readable, and どきどき and ドキドキ both occur. Katakana can add visual emphasis, hiragana can feel softer or more approachable, and kanji can look more formal. The effect depends on the writer, the genre, and the surrounding text, so read the situation rather than assigning a fixed meaning to each script.
Vocabulary from this article
Every entry below appears earlier in the explanation or the examples. The readings given are the ones used here, not a list of every possible reading of each character.
| Word | Reading | Meaning |
|---|---|---|
| 漢字 | かんじ | kanji; Chinese characters used in Japanese |
| 山 | やま | mountain |
| 火山 | かざん | volcano |
| 高い | たかい | tall, high, expensive |
| 毎日 | まいにち | every day |
| 今日 | きょう | today |
| 日本語 | にほんご | Japanese language |
| 勉強 | べんきょう | study |
| 切手 | きって | postage stamp |
| 飲む | のむ | to drink |
| 音読み | おんよみ | Chinese-derived kanji reading |
| 訓読み | くんよみ | native Japanese kanji reading |
| 送り仮名 | おくりがな | kana attached to a kanji in an inflected word |
| 振り仮名 | ふりがな | kana showing a reading |
| 外来語 | がいらいご | loanword |
Tap the block to select all of it, then copy. In Anki: File → Import, note type Basic, separator Tab.
漢字 かんじ — kanji 山 やま — mountain 火山 かざん — volcano 高い たかい — tall, high 毎日 まいにち — every day 今日 きょう — today 日本語 にほんご — Japanese language 勉強 べんきょう — study 切手 きって — postage stamp 飲む のむ — to drink 音読み おんよみ — Chinese-derived kanji reading 訓読み くんよみ — native Japanese kanji reading 送り仮名 おくりがな — kana attached to a kanji 振り仮名 ふりがな — kana showing a reading 外来語 がいらいご — loanword
I'm Yuuki, a Japanese teacher based in Tokyo. I start beginners on kana with real words rather than isolated charts, so the first kanji you meet already belong to sentences you can say. To read short Japanese sentences together, see Japanese lessons explained in English or Book a trial lesson · $13.
Sources
- The Japan Foundation, Irodori: Other Resources. Hiragana and katakana charts and word-level practice materials.
- Agency for Cultural Affairs, feature on the revised Joyo Kanji Table (Japanese PDF). Background on the general-use list and its 2,136 characters.
- Eri Banno et al., Genki: An Integrated Course in Elementary Japanese I, third edition, The Japan Times Publishing. Reference for introductory writing conventions and elementary example patterns; the practice questions here are original.
多くの人は「おぼえるものが3つある」と考えます。でも、3つの層が同じ行に重なっていると考えるほうが役に立ちます。どの文字で書いてあるかが、言葉そのものとは別の情報を教えてくれるからです。
基本
3つの文字
| 文字 | 種類 | 仕事 |
|---|---|---|
| 漢字 | 表意文字 | 名詞・動詞や形容詞の中心 |
| ひらがな | 表音文字 | 助詞・活用など文法の部分 |
| カタカナ | 表音文字 | 外来語・外国の名前・オノマトペ・強調 |
ひらがなとカタカナは、同じ音を表す46文字です。同じ音の、2つの服です。漢字はまったく別で、意味を表し、読み方がいくつもあります。
私は毎日コーヒーを飲みます。 — I drink coffee every day. (kanji + katakana + hiragana in one sentence)
この1文が全部です。どの文字が何をしているか見れば、単語を知らなくても、文の形が分かります。
なぜスペースがないの?
文字が変わる所が、スペースの代わりだからです。漢字のかたまりで単語が始まり、そのあとのひらがなが文法です。
今日は日本語を勉強します。 — Today I'll study Japanese. (three kanji blocks, each with its hiragana)
だから、ひらがなばかりの子どもの本は、大人の学習者にはむずかしいです。切れ目が見えなくなるからです。
表音文字と表意文字
「表音文字」は音を表します。「か」は "ka" だけです。「表意文字」は意味を表します。「山」は mountain で、読み方は「やま」にも「サン」にもなります。
だから漢字には読み方がいくつもあります。そして、だから漢字はおぼえる価値があります。「山」を知っていれば、「火山」「登山」も見当がつきます。
もう少し先へ
カタカナが伝えていること
「外国の言葉」だけではありません。カタカナはイタリック体のような働きをします。
- 外来語 — コーヒー、テレビ、アルバイト。
- 外国の名前・地名 — パリ、ニューヨーク。
- オノマトペ(とくに強い音)— ドキドキ、ガチャン。(やわらかい音はひらがなが多いです。オノマトペを見てください。)
- 強調 — ふつうはひらがなの言葉を、わざとカタカナで書きます。ヤバい、ダメ。
- 専門の言葉 — 生物の名前など。
このアニメ、ヤバいくらい面白い。 — This anime is insanely good. (katakana for emphasis, not because the word is foreign)
知っている言葉がカタカナで書いてあったら、それは「大きい声」だと思ってください。
ふりがな
漢字の上や横に書く、小さいひらがなです。子どもの本、少年マンガ、新聞のむずかしい漢字、そして名前につきます(名前は日本人にも読めないことが多いからです)。
少年マンガが読む練習にいいのは、このためです。本物の文で、読み方の助けがあります。大人の小説や新聞には、ふりがながありません。ここが本当のかべです。
漢字はいくつ必要?
日本の「常用漢字」は2,136字です。これが新聞を読むための数です。
でも、はじめに必要な数は、ずっと少ないです。よく出る漢字はかたよっているので、最初の数百字で、ふだんの文のかなりの部分が読めます。そして、手で書けなくても大丈夫です。今はほとんど入力(タイピング)なので、必要なのは「見て分かること」です。
ローマ字
ローマ字は、日本語をアルファベットで書いたものです。駅の看板やパスポートにあります。でも、勉強の道具としてはわなです。英語の音で日本語を読むくせがつき、かなをおぼえるのがおそくなります。
最初の1〜2週間でひらがな、すぐあとにカタカナ。そして、できるだけ早くローマ字をやめてください。
学ぶ順番
- ひらがなが先。 文法の部分なので、これがないと何も進みません。
- カタカナが次。 メニュー、店の看板、外来語が読めるようになります。外来語は、もう知っている言葉です。
- 漢字は最初からずっと。 まとめてではなく、今使っている言葉の漢字をいっしょにおぼえます。助数詞や数字は、自然に漢字もついてきます。
「漢字はあとで」は、あとが来ません。
よくあるまちがい
- ひらがなとカタカナを1つの勉強だと思う。 見る回数がちがうので、カタカナだけ弱くなります。
- 1か月以上ローマ字で読む。 かなをおぼえるのがおそくなります。
- カタカナカタカナ外国の言葉だと思う。 強調やオノマトペにも使います。
- 漢字を単語からはなしておぼえる。 言葉といっしょなら残ります。
- 全部手で書けるようにしようとする。 読めれば十分です。
- 子どもの本はかんたんだと思う。 切れ目が見えないので、かえってむずかしいです。
練習
まず自分で答えてから、見てください。3番と4番はペアです。
1. 文法を表すのはどの文字ですか。
答えを見る
ひらがな — 助詞や活用です。漢字は中身、ひらがなはつなぎです。
2. なぜスペースがいらないのですか。
答えを見る
文字が変わる所が切れ目だから — 漢字で始まり、ひらがなが続きます。
3. ひらがなの「やばい」はどんな感じですか。
答えを見る
ふつうの書き方 — とくに強調していません。
4. カタカナの「ヤバい」はどんな感じですか。
答えを見る
強調 — 大きい声、強い感じです。イタリック体のような働きです。
5. 「表意文字」とは?
答えを見る
意味を表す文字文字漢字 — 音を表すのは「表音文字」(ひらがな・カタカナ)です。
6. ふりがなはどこにありますか。
答えを見る
子どもの本・少年マンガ・新聞のむずかしい漢字・名前 — 読み方が分からない所につきます。
7. 常用漢字はいくつですか。
答えを見る
2,136字 — 新聞などで使う漢字の表です。
8. 「私は毎日コーヒーを飲みます。」の3つの文字を分けてください。
答えを見る
漢字: 私・毎日・飲/カタカナ: コーヒー/ひらがな: は・を・みます — 1文に3つの層があります。
9. なぜひらがなだけの本はむずかしいのですか。
答えを見る
切れ目が見えないから — 自分で分けながら読むので、おそくなります。
10. 学ぶ順番は?
答えを見る
ひらがな → カタカナ、漢字は最初からずっと — 使っている言葉といっしょにおぼえます。
よくある質問
ひらがなはどのくらいでおぼえられますか。 毎日やれば1〜2週間で読めるようになります。何回か手で書くと、読むのも速くなります。
日本人も漢字を忘れますか。 はい、よくあります。今はほとんど入力なので、「読めるけれど書けない」がふつうです。
カタカナのほうがむずかしいですか。 形は同じくらいですが、シ/ツ、ソ/ンがにていて、見る回数も少ないので、弱くなりがちです。お店のメニューが、いちばんいい練習です。
書き順は必要ですか。 あると便利です。字がきれいになり、部首で辞書が引けて、むずかしい漢字を部品に分けられます。
音読みと訓読みのちがいは? 音読みは中国から来た読み方で、熟語によく使います。訓読みは日本のもとの読み方で、漢字1字+ひらがなの時に多いです。「山」は「やま」、「火山」は「サン」です。
かなだけでも大丈夫ですか。 話すだけなら大丈夫です。でも読むのはむずかしいです。メニュー・看板・ニュース・インターネットのほとんどが読めません。
この記事に出た単語
下のブロックをタップして全部えらび、コピーしてください。Anki では ファイル → 読み込み、ノートの種類は 基本、区切りは タブ です。
漢字 かんじ — kanji 平仮名 ひらがな — hiragana 片仮名 かたかな — katakana 文字 もじ — character, letter 表音文字 ひょうおんもじ — phonetic character 表意文字 ひょういもじ — ideographic character 振り仮名 ふりがな — reading gloss above kanji 常用漢字 じょうようかんじ — standard-use kanji 音読み おんよみ — Chinese-derived reading 訓読み くんよみ — native Japanese reading 外来語 がいらいご — loanword 書く かく — to write 読む よむ — to read 勉強 べんきょう — study 毎日 まいにち — every day 新聞 しんぶん — newspaper 小説 しょうせつ — novel 山 やま — mountain
私はユウキです。東京で日本語を教えています。 italki の Top 1% の先生で、アニメは1,500本以上見ました。いちばん早く伸びるのは、最初の1か月でローマ字をやめた人です。かなが むずかしいからではありません。ローマ字でいる間は、日本語が少し遠いところにあるからです。
More drills like the ones above, plus a timed JLPT-style mock test: Practice · N5上のような練習問題と、時間つきのJLPT形式のもぎ試験: 練習ページ · N5
Want to try this in a real conversation?
本当の会話で、ためしてみませんか?
30-minute trial lesson, $13. Times shown in your own timezone.
30分の体験レッスン、$13。時間はあなたのタイムゾーンで表示されます。
Book a trial lesson · $13