Furigana (振り仮名) is the small kana printed above a kanji to show how it is read. Japanese needs it because most kanji carry several readings and only the word decides which one applies. Furigana appears in manga, children's books, newspapers, station signs and on nearly every official form. It is enormously useful for learners, on one condition: your eye must land on the kanji before it lands on the kana.
Every learner has the same moment. You have finished kana, you know a few hundred words, and you open something written for actual Japanese people. A page of a manga, a menu, a train notice. And it is a wall. Not a hard sentence, a wall, because the characters are not merely difficult to understand, they are impossible to even say. You cannot look up a word you cannot pronounce, so you cannot even fail productively.
Then you notice the little kana floating above the characters, and the wall turns into a door.
Two characters you might not know, plus three kana that make them speakable. That is the whole mechanism.
What furigana literally is
The word breaks down as 振る, to sprinkle or assign, plus 仮名, the syllabic script. Kana sprinkled over the top. You will also see it called 読み仮名, reading kana, and in typography it is called ruby, from an old British printing term for a very small type size.
Mechanically it is a pronunciation guide that is not part of the word. Remove it and the sentence is unchanged. That is the key difference from okurigana, which we will come back to, and it is why furigana can be switched on and off freely in printed material and in software.
Why Japanese cannot do without it
English speakers sometimes assume furigana is a beginner's aid, like training wheels. It is not. Adult native readers use it constantly, because Japanese has a genuine ambiguity problem at the character level.
Take one very ordinary character, 生. Here it is in five common words.
い, う, せい, なま, ふ. Same character, five sounds, and there is nothing inside the character that tells you which one is running. You learn it word by word. That is what the on'yomi and kun'yomi split is really describing, and 生 is only the famous example rather than a rare one.
Now scale that problem up to a person's name, where readings are not standardised at all. 中田 could be Nakata or Nakada. 東 as a surname could be Higashi or Azuma. A Japanese person meeting a new colleague genuinely cannot know how to say the name on the business card. That is not a learner problem. That is why furigana exists.
Where you will actually meet it
| Where | How much | Why it is there |
|---|---|---|
| Manga for younger readers | Almost every kanji | The audience is still learning kanji at school, so publishers assume nothing. |
| Manga for adults | Sparse | Only rare kanji, invented terms and names. This is why the same series can feel easy or brutal depending on the imprint. |
| Newspapers | Rare | Reserved for characters outside the standard set and for name readings. |
| Station and street signs | Frequent | Place names are unpredictable, and the sign has to work for everyone including tourists. |
| Official forms | A dedicated field | You are asked to write the reading of your own name, because the office cannot derive it. |
| Song lyric booklets and karaoke | Heavy | Lyrics use unusual readings on purpose, sometimes assigning a completely different word as the sung reading. |
On Japanese forms the name field is followed by a second box labelled either ふりがな or フリガナ. The label is the instruction. If it is written in hiragana, write your reading in hiragana. If it is written in katakana, write it in katakana. Nobody explains this and everybody is expected to notice.
How furigana attaches to a word
This is the part almost no guide covers, and it is the part that trips people up the moment they start writing Japanese with readings themselves.
Reading per character
When each kanji contributes its own sound, the reading sits over that character alone. Typographers call this mono ruby.
Reading over the whole word
Sometimes a reading belongs to the compound and cannot be split at all. These are called 熟字訓, and they are among the most common words in the language.
There is no way to say which part of きょう comes from 今 and which from 日. The whole reading was assigned to the whole word. When you meet these, do not try to decompose them, and do not treat them as evidence that kanji readings are random. They are a closed set, they are frequent, and you learn them the way you learned "one, two, three" in English spelling. There is a wider family of these covered in special kanji readings.
Furigana, okurigana and romaji are three different things
| Where it sits | Part of the word? | Example | |
|---|---|---|---|
| Furigana | Above the kanji | No, it is a guide | the き above 聞 |
| Okurigana | After the kanji, on the line | Yes, it carries inflection | the く in 聞く |
| Romaji | Instead of Japanese script | Not Japanese writing at all | kiku |
The practical consequence: deleting furigana leaves a correct sentence, deleting okurigana breaks the word, and reading in romaji trains a habit you will have to unlearn. Furigana is the only one of the three that helps you without costing you something later, and even that comes with a condition.
The condition: eye order
Here is the failure mode, and if you have read a furigana heavy manga and finished it without learning a single new character, you have already lived it.
Under the hood this is the same issue as recognition versus recall. Seeing the answer next to the question feels like knowledge and produces almost none. The retrieval attempt is where the learning happens, and furigana positioned above the kanji gives you a retrieval attempt on every word, for free, if you take it.
The three second drill
- Cover the top. Thumb over the kana on paper, or read the line slightly out of focus so the small type stays blurred.
- Say the kanji out loud. Out loud matters. Silent guessing lets you cheat by half remembering.
- Uncover and check. Right means the word is consolidating. Wrong means you just learned something, which is a better outcome than being right.
- Mark the misses, not the hits. Three or four wrong words per page is the correct amount. If you are getting everything right, the material is too easy to be teaching you anything.
When to keep furigana and when to drop it
The useful rule is per word, not per book. Keep readings visible on anything you met in the last few weeks, because at that stage the reading is still fragile and a failed lookup costs you the whole sentence. Turn them off for the core few hundred characters you genuinely own, because there the visible kana is doing nothing except giving your eye somewhere lazier to go.
This is also why "read native material with no support" is bad advice given too early. Reading only works as practice while comprehension stays above roughly ninety percent. Below that you are not reading, you are decoding, and decoding is slow enough that most people stop within a week. Furigana is what keeps a slightly too hard text inside the range where reading still functions, which is exactly how a graded reading ladder is supposed to work.
Getting furigana onto text that does not have it
Which brings up the obvious problem. The Japanese you most want to read, the sign in front of you, the menu on the table, the page of a series with no readings printed, is exactly the Japanese that arrives bare.
This is what the OCR scanner in Kanjijo is for. Point the camera at any Japanese text, and it reads the characters off the image, attaches the readings, gives you the meanings, and lets you send anything you did not know straight into your review queue. The lookup that used to break your reading flow becomes a two second detour, and the thing you looked up comes back to you on the day you were about to forget it rather than disappearing into a note you never open again.
How Kanjijo handles readings
Furigana is not a feature bolted onto Kanjijo, it is how the content is built. Every vocabulary item carries an example sentence with furigana on the kanji and a full English translation underneath, so you always get the word in a real sentence rather than stranded in a list. Grammar examples carry the same treatment, because a grammar point you cannot pronounce is a grammar point you cannot use.
On top of the readings sit the exclusive mnemonics, written for every kanji and every vocabulary item, and written to be remembered rather than to be technically correct. Meaning first, reading second, which is the order that survives contact with a reading passage.
Then the app keeps it moving. The SRS engine schedules each item for the day your memory is about to drop it. The home screen and lock screen widgets put today's words where your eyes already go, and the test widget quizzes you without opening the app at all. When you want to check whether it is working, there are JLPT reading sets, JLPT listening sets and full mock exams, plus conversation, shadowing and dictation for the spoken half of the language.
Go deeper
Read Japanese without stopping every ten seconds
Kanjijo gives you furigana and a full translation on every example sentence, exclusive kanji and vocabulary mnemonics, an SRS engine, OCR scanning for text in the wild, lock screen and home screen widgets, the complete grammar bank, JLPT reading and listening practice, mock exams, conversation, shadowing and dictation.
Download Kanjijo FreeFrequently Asked Questions
Small kana printed above or beside a kanji to show how it is read. The name means roughly sprinkled kana, and in typography it is called ruby text. It makes a word pronounceable to a reader who does not know that character, or does not know which of its readings applies here.
Because most kanji have several readings and only the word decides which one runs. The character 生 is read い in 生きる, う in 生まれる, せい in 学生, なま in 生ビール and ふ in 芝生. Names are worse, since their readings are not standardised at all, which is why even native speakers need furigana on unfamiliar names.
Only if your eye reaches the kana before the kanji. In that order the kanji is never processed and you can finish a whole book without learning a character. Read the kanji first and use the kana as a check, and every line becomes a free self test.
Furigana sits above the kanji and is a guide that is not part of the word. Okurigana sits after the kanji on the line and is part of the word, carrying inflection, like the き in 生きる. Delete furigana and nothing changes. Delete okurigana and the word breaks.
Because name readings cannot be derived from the characters. 中田 might be Nakata or Nakada. The field asks you to spell out the reading. Watch the label: ふりがな means answer in hiragana, フリガナ means answer in katakana.