Fullwidth Halfwidth Converter
Quickly convert between fullwidth and halfwidth for letters, numbers, and punctuation.
InputChars: 0
OutputChars: 0
About This Tool
A high-demand fullwidth/halfwidth converter for typography, data cleaning, and mixed Chinese-English content. It converts halfwidth ASCII characters (letters, digits, punctuation, and spaces) to fullwidth form, or restores fullwidth characters back to halfwidth to keep text consistent across forms, spreadsheets, and publishing workflows. All conversion runs locally in your browser for speed and privacy.
Features
- 🔁 Bidirectional: Convert halfwidth to fullwidth and back
- 🔤 Full Coverage: Letters, digits, punctuation, and spaces supported
- ⚡ Instant Output: Real-time conversion as you type
- 🧩 Mixed Text Ready: Great for mixed Chinese-English formatting
- 🛡️ Privacy First: 100% local processing, no data upload