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Fullwidth Converter

Convert ASCII text to fullwidth characters and back again, including the fullwidth space and punctuation.

Convert character width

Converted characters: 0
Fullwidth forms are real Unicode code points, mainly used for East Asian text layout.

How to use the Fullwidth Converter

  1. Choose whether to go halfwidth to fullwidth or back.
  2. Type or paste the text you want to convert.
  3. Copy the converted result for your document or post.

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Frequently Asked Questions

Common questions about the free online fullwidth converter.

They are Unicode forms that occupy the same width as an East Asian character, so each letter looks wide and evenly spaced.
All printable ASCII letters, digits and punctuation, plus the ordinary space, which becomes a fullwidth space.
Choose the fullwidth to halfwidth direction and the wide characters are turned back into plain ASCII.
Characters outside the ASCII range, such as accented letters or emoji, are copied through without any change.
Yes. A normal space becomes an ideographic space when going wide, and that ideographic space turns back into a normal space.
Some fonts and apps have no glyph for these code points, so you may see boxes or uneven spacing.
Some services accept them, but many block or normalise these characters, so plain text is usually safer.
No. The conversion is done with simple arithmetic in your browser and nothing is sent to a server.
Yes. The converter is fully responsive and works on phones, tablets and desktops.
Yes. The fullwidth converter is free, unlimited and needs no account or sign up.

Last updated: October 10, 2026