↔️ Full/Half Width Converter
Convert between fullwidth and halfwidth characters
✓ Runs entirely in your browser — your data never leaves this device
About This Tool
Convert fullwidth characters (ＡＢＣ１２３) to halfwidth (ABC123) and back. Common in Japanese typesetting, form validation and database cleaning.
How to Use
- Paste text containing fullwidth or halfwidth characters
- Click Full→Half or Half→Full
- Copy the converted text
FAQ
What are fullwidth characters?
Characters occupying a full CJK cell (ＡＢＣ), vs halfwidth that take half (ABC).
Are spaces converted too?
Yes, fullwidth and halfwidth spaces map to each other.