Full-width ↔ half-width
Converts full-width letters, digits and symbols such as ＡＢＣ１２３ to half-width, or the other way around.
Example
- Options used
- Default options
ＴｅｘｔＣｌｅａｎ□２０２６！□ｉｎｆｏ＠ｅｘａｍｐｌｅ．ｃｏｍ
TextClean 2026! info@example.com
Symbols in examples: ⇥ tab · · trailing space · ⍽ NBSP · □ full-width space · ◌ zero-width character
Open this operation in the toolWhat it does
Chinese, Japanese and Korean documents often contain full-width letters and digits (ＡＢＣ１２３) and symbols (！＃＠) that are as wide as a Hangul syllable or a Chinese character. They look similar, but computers treat them as completely different characters, so searches, numeric calculations and email or URL input fail.
Direction
- Full-width → half-width: converts full-width characters in the Unicode range U+FF01–U+FF5E to the corresponding ASCII characters (U+0021–U+007E). With 'Convert spaces too' on, the full-width space (U+3000) also becomes a regular space. Hangul, Chinese characters and kana are not changed.
- Half-width → full-width: converts ASCII characters to full-width. Use it to fill in forms that require full-width input, such as Japanese forms. With 'Half-width katakana → full-width' on, half-width katakana like
ｶﾞｷﾞis converted toガギ, merging the voiced and semi-voiced marks.
When to use it
Apply full-width → half-width when numbers copied from Japanese or Chinese sites or older Korean documents are not recognized as numbers in Excel, or when an email address is rejected because of a full-width ＠. Invisible whitespace problems are handled by Clean invisible characters and quotes.