How does it tell hiragana from katakana?

Each character is checked against its Unicode block. Hiragana occupies U+3040 to U+309F and katakana U+30A0 to U+30FF, so the counter classifies every character by the range it falls into, with kanji in the CJK Unified Ideographs blocks.

What counts as a kanji?

Characters in the CJK Unified Ideographs ranges (U+4E00 to U+9FFF and common extensions) are counted as kanji. This includes the Han characters used in Japanese; it does not separate jōyō from non-jōyō kanji.

What are full-width characters?

Full-width forms are the wide versions of ASCII letters, digits, and punctuation used in Japanese typography, in the U+FF01 to U+FF60 range. They are counted separately from ordinary half-width romaji and digits.

Does it count spaces and line breaks?

The tool reports the total character count both including and excluding whitespace. Spaces, tabs, and line breaks are excluded from the per-script counts since they belong to no script.

Is my text sent anywhere?

No. All counting runs locally in your browser. Nothing you paste is uploaded or stored.

Japanese Character Counter

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Count Japanese text by script

Japanese mixes four writing systems, and a plain character count hides that. This counter breaks your text into hiragana, katakana, kanji, romaji, digits, and full-width characters so translators and writers can check script balance and stay within limits.

How it works

Every character is classified by the Unicode block it belongs to:

ぁ–ゟ (U+3040–U+309F)  → hiragana
゠–ヿ (U+30A0–U+30FF)  → katakana
一–鿿 (U+4E00–U+9FFF)  → kanji
A–Z a–z              → romaji
０–９ Ａ–Ｚ (U+FF01–FF60) → full-width

The tool walks the string code point by code point and increments the count for the block each character falls into.
Whitespace is excluded from per-script counts but the total is reported both with and without it.
All six script counts plus totals update live as you type.

Example and notes

The phrase コンピュータでABCを入力 contains katakana, full-width-free romaji, and kanji at once, and the counter shows each total separately. Use the no-whitespace total when a platform counts characters strictly, and watch the full-width count when a form expects half-width input.

All counting happens in your browser — your text is never uploaded.