Good ToolsAll tools
Saved0
Navigation

THE PRACTICAL GUIDES

Prepare Japanese text for a form: halfwidth kana and selective conversion

A form may ask for halfwidth katakana in one field and halfwidth numbers in another. Check each field’s instructions before converting: changing every character can alter text you need to keep.

Open Japanese Characters

Convert hiragana to halfwidth katakana.

Choose Hiragana → Halfwidth kana · ひらがな → 半角カナ in Japanese Characters. This converts hiragana and fullwidth katakana to halfwidth kana. In this mode, fullwidth Latin letters and numbers stay as they are.

  1. Check the destination field’s instructions: hiragana, katakana and halfwidth katakana are different requirements.
  2. Paste the text and select Hiragana → Halfwidth kana.
  3. Select Convert text and compare the result with your original.
Before
がっこう ぱぴぷぺぽ ABC123
After · kana converted, Latin text kept
ガッコウ パピプペポ ABC123

The marks in ガ and パ are represented in the halfwidth output as a base character followed by a voiced or semi-voiced mark. Check the destination form’s length limit: a visually similar string may contain a different number of characters.

Change numbers without changing kana.

Choose Fullwidth → Halfwidth · 全角 → 半角. Enable Numbers and disable Letters, Spaces, Kana and Symbols.

Before
注文123 ガッツ
After · only the digits changed
注文123 ガッツ

The kanji, fullwidth space and katakana were preserved. Enable Spaces separately only if the field also asks you to replace fullwidth spaces.

Check the destination form.

Copy the result into the field and review its validation message. Check whether spaces are allowed and whether the field expects hiragana, katakana or halfwidth katakana. The converter does not validate a person’s name or the destination form’s rules.

Character conversion does not translate Japanese, transliterate a name into Latin letters, infer kanji readings or guarantee acceptance by a form.

Keep the original.

Paste text or choose Open TXT. Conversion runs in the browser, with up to 20,000 characters per conversion. Download TXT prepares a UTF-8 text file.

Keep the original when the text will be used elsewhere. A form-specific conversion may not be the right version for a document or another form.

Put the guide into practice.

Open Japanese Characters

Explore Text & language · Browse practical guides