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Half-width / Full-width Converter
Convert width-only text adjustments instantly in your browser.
Everything runs locally in your browser. Nothing is sent to the server.
Conversion mode
Kana, symbols, and ASCII text are converted in browser only.
Converted result
Convert to full-widthConverted text appears here.
Convert to full-width Kana, symbols, and ASCII text are converted in browser only.
What it does
This tool is for adjusting width-only text quickly. It is useful for Japanese text cleanup, copy editing, and UI content normalization.
How to use
- Choose full-width or half-width.
- Paste or type the text.
- Copy the converted result when ready.
Notes
- Hiragana and kanji are left unchanged.
- The converter handles common kana, punctuation, spaces, and ASCII.
- It is designed to stay browser-only and lightweight.