Text Tools

Fullwidth and Halfwidth Character Converter

Convert between fullwidth and halfwidth letters, digits, punctuation, and spaces. Han characters stay unchanged. Useful for Chinese typography cleanup and form input normalization.

TextFullwidthHalfwidth

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Quick actions

Copy this tool URL or open the system share sheet on a supported device.

Use cases

  • Normalize mixed fullwidth and halfwidth copy
  • Fix halfwidth spaces in forms or rosters
  • Clean exported fullwidth digits and punctuation

How to use

  1. Paste text that mixes fullwidth and halfwidth characters
  2. Choose the conversion direction and which character classes to include
  3. Copy the converted result

Example input and output

Input (fullwidth → halfwidth)

Hello World

Output

Hello World

FAQ

Are Chinese characters changed?

No. Only fullwidth/halfwidth counterparts of ASCII-range letters, digits, punctuation, and spaces are converted.

Can I convert digits without punctuation?

Yes. Letters and digits, punctuation, and spaces are controlled separately.

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