Full-width Half-width Converter
Convert full-width digits, letters and punctuation to half-width and back, with per-category toggles (digits, letters, punctuation, spaces) — Chinese prose usually keeps full-width punctuation while code does not. Every replacement made is listed with its count so you can verify the result.
Full-width characters occupy two columns, half-width one. Chinese prose usually keeps full-width punctuation; only code, digits and English words need converting. Spaces are off by default because ideographic spaces are often used as indentation.
About this tool
Convert full-width digits, letters and punctuation to half-width and back, with per-category toggles (digits, letters, punctuation, spaces) — Chinese prose usually keeps full-width punctuation while code does not. Every replacement made is listed with its count so you can verify the result.
How to use
- Fill in the input box above, or click "Fill sample" to try it instantly
- Adjust the options as needed — results update as you type
- Click "Run" to get the result, then copy or export it in one click
Tips
- Runs entirely in your browser — your data never leaves the device
- Completely free, no registration, no usage limits
- Most tools compute in real time as you type