Hiragana ↔ Katakana Converter

Convert Hiragana and Katakana (halfwidth kana supported)

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How to Use

  1. Enter text

    Type or paste the text you want to convert into the input area.

  2. Convert

    Click "Convert" to convert Hiragana → Katakana. Use "Swap" to switch to Katakana → Hiragana.

  3. Copy result

    Use the "Copy" button to copy the result to your clipboard.

Features

  • Bidirectional conversion (Hiragana ↔ Katakana)
  • Best-effort halfwidth kana normalization (e.g., ｶﾞ → ガ)
  • Browser-based processing (no data sent to server)
  • Mobile-friendly responsive design
  • Dark mode support

FAQ

Does it convert Kanji or Latin letters?

No. Only Hiragana and Katakana are converted. Kanji, Latin letters, numbers, and symbols are left unchanged.

Does it support halfwidth Katakana?

Yes. Halfwidth Katakana sequences are normalized before conversion when possible.

Is my data sent to a server?

No. All processing happens locally in your browser via JavaScript. No data is ever transmitted externally.