Full-width and Half-width Conversion Tool

Input Text Character Count:0

Convert Punctuation Convert Numbers Convert Letters Convert Spaces

Output Text Character Count:0

Character Reference Table

Type	Full-width Characters	Half-width Characters	Unicode Range
Space	(U+3000)	(U+0020)	Fullwidth Space ↔ Halfwidth Space
Numbers	０１２３４５６７８９	0123456789	U+FF10~FF19 ↔ U+0030~0039
Uppercase Letters	ＡＢＣＤＥ...ＸＹＺ	ABCDE...XYZ	U+FF21~FF3A ↔ U+0041~005A
Lowercase Letters	ａｂｃｄｅ...ｘｙｚ	abcde...xyz	U+FF41~FF5A ↔ U+0061~007A
Punctuation Marks	！＠＃＄％＾＆＊（）	!@#$%^&*()	U+FF01~FF5E ↔ U+0021~007E

Fullwidth Characters:Characters that occupy the width of two standard characters, mainly used in CJK typography, each taking up the width of one Chinese character
Halfwidth Characters:Characters that occupy the width of one standard character, i.e., regular ASCII characters, the standard form for English letters and numbers
Unicode Range:Fullwidth characters are usually within U+FF00~FF5E, corresponding halfwidth characters are within U+0020~007E
Conversion Rules:The Unicode code of a fullwidth character minus 0xFEE0 (65248) equals the corresponding halfwidth character, except for spaces
Use Cases:Commonly needed in data cleaning, text normalization, form validation, database storage, and other scenarios to unify character formats
Notes:Chinese punctuation marks (such as “，。！？”) differ from fullwidth punctuation; this tool only converts characters within the fullwidth ASCII range