Full-width ASCII
Input
ＫｏｇｕＮａｖｉ １２３！
Output
KoguNavi 123!
KoguNavi tool
Full-width / Half-width Converter
Convert full-width and half-width text for Japanese forms, office documents, and everyday cleanup.
Local in browser
Runs in your browser for this tool.
Current tools are designed to run in your browser. As a general habit, avoid pasting passwords, private keys, or production secrets into any website.
This converts character width only. It does not translate text, and some symbols may vary by context.
What it helps with
- Clean Japanese form input
- Normalize copied text before sharing
- Convert half-width katakana in office documents
How to use
- Paste text that contains full-width or half-width characters.
- Choose full-width to half-width, half-width to full-width, or space normalization.
- Review the converted text and copy the output.
Examples
Half-width katakana
Input
ｶﾞｯｺｳでﾊﾟﾝを買う
Output
ガッコウでパンを買う
Normalize spaces
Input
住所 氏名 メモ
Output
住所 氏名 メモ
Good to know
- Some symbols may not have exact equivalents.
- Japanese punctuation conversion can vary by context.
- This tool does not translate text.
FAQ
- Does this tool translate Japanese?
- No. It only converts character width, spaces, and selected punctuation or katakana forms.
- Does it handle half-width katakana?
- Yes. Common half-width katakana and voiced marks are converted to full-width katakana.
- Does it upload text?
- No. Conversion is designed to run in your browser for this tool.
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