KoguNavi

Kana Converter

Convert Japanese kana and full-width alphanumeric notation before CSV, Excel, forms, or document cleanup.

Conversion tools

What it helps with

  • Clean kana notation before CSV or Excel paste
  • Convert old half-width kana from legacy systems
  • Normalize product names, addresses, and form text

How to use

  1. Paste text that contains hiragana, katakana, half-width kana, or full-width letters and numbers.
  2. Choose the conversion mode you need.
  3. Review the converted text and copy the output.

Examples

Hiragana to katakana

Input

こうぐなび

Output

コウグナビ

Half-width kana cleanup

Input

カタカナ パスワード

Output

カタカナ パスワード

Full-width alphanumeric

Input

商品ABC123

Output

商品ABC123

Good to know

  • Does not add furigana to kanji.
  • Does not translate text.
  • Some historical kana or symbols may need manual review.

FAQ

Can this add furigana to kanji?
No. It only converts kana and character width notation. It does not read kanji or add furigana.
Does it handle voiced and semi-voiced half-width kana?
Yes. Common combinations such as ガ and パ are converted with their voiced marks.
Does this translate Japanese?
No. It keeps the text meaning as-is and only changes selected character forms.

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