ONE SMALL TASK, DONE.
Full-width Alphanumeric Converter
Switch Latin letters, digits and ASCII punctuation between full and half width.
Processed on your devicePaste text, open a file or try the sample to begin.
Your result
How to use
- Paste text with full-width or half-width letters and digits.
- Choose the target width and whether spaces change too.
- Copy or download the result.
Good to know
Useful for cleaning form entries and spreadsheet text.
Only ASCII equivalents and optionally spaces are changed. Japanese kana remain unchanged.
Text files up to 5 MB are supported. Downloads are encoded as UTF-8.
Your input is processed by this tool on your device. It is not uploaded to our server. Advertising uses external services. Social and coffee links open external websites.
Questions
When is this useful?
Forms and spreadsheets often reject full-width digits such as １２３, and product codes typed in Japanese input mode need cleaning.
Are Japanese characters affected?
No. Only ASCII letters, digits, punctuation and optionally spaces are converted.
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