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Kana Converter
The distance between ひらひら and ヒラヒラ is one script. The distance between ｶﾀｶﾅ and カタカナ is one setting. This tool closes both.
Output
How it works
- Paste or type Japanese into the input.
- Pick a direction: hiragana → katakana, katakana → hiragana, or half-width ↔ full-width.
- Copy the result. Long vowel marks and 促音 are left untouched on purpose.
Notes
- Nothing leaves your browser: the conversion happens in the page, not on a server.
- Only kana ranges are touched. Kanji, Latin letters, digits and punctuation pass through unchanged, which is what you want when a line mixes scripts.
- No dependencies. About forty lines of JavaScript, readable in one sitting.
| Runtime | Browser, no build step |
|---|---|
| Network | None after load |
| Storage | None |
All tools
| 02 | Gojūon with Pitch AccentThe fifty-six cells of the kana grid, each with its modern Tokyo pitch pattern, a sample word, and the mora count that makes the contour predictable. | Browser |
| 03 | Vertical & Horizontal PreviewSet one sentence both ways: horizontal left-to-right and vertical top-to-bottom, with ruby over the kanji. The difference is most of the argument for reading Japanese. | Browser |