Kanji tell you a word's meaning but not always its sound — and as you saw on the on'yomi and kun'yomi page, a single character can be read several ways. Furigana (ふりがな) is the elegant solution the Japanese writing system built for exactly this problem: tiny kana printed alongside a kanji to spell out how it is read. It is the scaffolding that lets a child, a learner, or an adult meeting a rare character get through the text — and understanding it clarifies precisely what this guide's romanization line is doing on every example.
What furigana is
Furigana (also called ruby, a typographic term) is small kana set beside a kanji to give its reading. Where it sits depends on the text direction:
- In horizontal text, furigana rides above the kanji.
- In vertical text, it runs down the right-hand side of the kanji column.
(That split follows the two writing orientations covered on the vertical vs. horizontal writing page.) Typeset, the word 漢字 with its reading looks like this — 漢字 — the reading かんじ floating above the two kanji. When we cannot typeset true ruby in running prose, the standard convention is to write the reading in parentheses right after the word: 漢字（かんじ）. Either way, the message is the same: this is how you say these characters.
この漢字の読み方が分かりません。
kono kanji no yomikata ga wakarimasen
I don't know how to read this kanji. (漢字 = かんじ, 読み方 = よみかた)
難しい漢字にはふりがなを振ってください。
muzukashii kanji ni wa furigana o futte kudasai
Please add furigana to the difficult kanji. (the verb 振る, ふる, is used for 'putting on' furigana)
Where you actually see furigana
Furigana is not sprinkled everywhere — it appears exactly where a reader might not know a reading:
- Children's books and early school texts, where kanji outstrip the young reader's knowledge. Manga aimed at kids and teens is famously furigana-heavy.
- Learner materials — textbooks, graded readers, and dictionaries for non-natives.
- Rare or non-standard kanji, including characters outside the 2,136 jōyō set. Japanese newspapers, by policy, add furigana to any kanji beyond that list.
- Names. This is a big one even for native adults: Japanese surnames and given names have wildly unpredictable readings, so official forms often print furigana beside the name field.
- Deliberately ambiguous or playful readings, especially in fiction, song lyrics, and advertising, where a writer prints one word in kanji but assigns it an unexpected reading in the ruby.
子ども向けのマンガは全部ふりがな付きだ。
kodomo-muke no manga wa zenbu furigana-tsuki da
Manga aimed at children all comes with furigana.
この人の名前、何て読むのか分からない。
kono hito no namae, nante yomu no ka wakaranai
I can't tell how to read this person's name. (informal — names are the classic case for furigana)
新聞は常用漢字以外にふりがなを付ける。
shinbun wa jōyō-kanji igai ni furigana o tsukeru
Newspapers put furigana on kanji outside the regular-use set.
The kanji is still the real spelling
This is the point learners most often get backwards. Furigana shows you how to read a kanji; it does not replace the kanji or become the correct way to write the word. The kanji is the genuine spelling — furigana is a temporary label hovering beside it for readers who need help. Once a reader knows the character, the furigana is simply ignored, and in text for fluent adults it is usually not printed at all.
この字は「煙草」と書いて「たばこ」と読む。
kono ji wa 'tabako' to kaite 'tabako' to yomu
This word is written 煙草 and read 'tabako'. (the kanji spelling is 煙草; たばこ is only its reading)
「一日」は「ついたち」とも「いちにち」とも読める。
'tsuitachi' to mo 'ichinichi' to mo yomeru
一日 can be read either 'tsuitachi' (the 1st of the month) or 'ichinichi' (one day). (here furigana resolves a genuine ambiguity)
Furigana and this guide's romanization line
Now the connection that makes furigana click for a learner of this guide. Every <GrammarExample> here has a romanization line beneath the Japanese — and that line does exactly what furigana does: it tells you how to read the characters, and it is meant to be outgrown. The only difference is the alphabet:
| Reading aid | Written in | Used by |
|---|---|---|
| Furigana | kana (ひらがな) | Japanese readers, in real published text |
| This guide's romanization | Hepburn romaji (Latin letters) | foreign learners, in this guide only |
| Inline gloss like 漢字（かんじ） | kana, in parentheses | both — the plain-text stand-in for ruby |
So when you see 漢字（かんじ）→ kanji in these pages, you are looking at three layers of the same idea: the real spelling (漢字), a kana reading aid (the furigana-style gloss), and a romaji reading aid (the romanization line). This guide also introduces every new kanji word with its kana reading in parentheses the first time it appears — a deliberate imitation of how a furigana edition supports a reader.
Compared to English
English has no true equivalent, because our alphabet already spells out pronunciation letter by letter — there is nothing to gloss. The nearest analogues are the pronunciation respellings in an English dictionary (colonel → "KER-nl") or the phonetic guides newscasters get for hard names. Furigana is like printing that respelling permanently beside every difficult word — but because kanji hide their sound so completely, Japanese needed a systematic, built-in way to do it, and furigana is it.
Common mistakes
❌ Believing furigana means you never have to learn the kanji.
Incorrect — furigana is a scaffold. Adult native text mostly omits it; you must learn the characters.
✅ 漢字（かんじ）を覚える。
kanji o oboeru
to memorize the kanji — use furigana to support learning, not to replace it.
❌ Writing 'kanji' in romaji as furigana above 漢字 in Japanese text.
Incorrect — furigana in native text is always kana, never romaji.
✅ 漢字（かんじ）
kanji
the reading gloss is in kana (かんじ); romaji is only this guide's separate aid.
❌ Treating the furigana reading as the correct spelling of the word.
Incorrect — the kanji is the real spelling; furigana only shows its sound.
✅ 「煙草」と書く。
'tabako' to kaku
you write it 煙草 — たばこ is merely how it's read.
❌ Expecting furigana on every kanji in a normal newspaper or novel.
Incorrect — furigana appears mainly on rare kanji, names, and children's or learner text.
✅ 新聞は常用漢字以外だけにふりがなを振る。
shinbun wa jōyō-kanji igai dake ni furigana o furu
Newspapers add furigana only to kanji outside the regular-use set.
Key takeaways
- Furigana (ruby) is small kana printed above (horizontal) or beside (vertical) a kanji to show its reading.
- It appears where readings are uncertain: children's books, manga, learner texts, rare kanji, and names — and it thins out as text gets more adult.
- The kanji is the real spelling; furigana is a scaffold, not a replacement, and never becomes the "correct" way to write the word.
- This guide's romanization line does furigana's job in romaji — but real furigana is always kana; romaji ruby does not exist in native Japanese.
Now practice Japanese
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Start learning Japanese→Related Topics
- Kanji: Meaning-Carrying CharactersN5 — What kanji are — characters borrowed from Chinese that carry meaning rather than sound — why each is a morpheme with several readings, and how beginners grow from a few dozen to literacy.
- On'yomi and Kun'yomiN5 — Why almost every kanji has two reading families — the Chinese-derived on'yomi used in compounds and the native kun'yomi used alone — plus a reliable heuristic for choosing between them.
- Vertical vs Horizontal Writing (縦書き・横書き)N4 — Japanese is written two ways — top-to-bottom columns read right-to-left (tategaki) and left-to-right rows like English (yokogaki) — and the reading direction, not the rotation, is what disorients beginners.