U+3007 "〇" Ideographic Number Zero Unicode Character
Unicode Version 17.0
〇
U+3007 "〇" Ideographic Number Zero is a distinct CJK symbol used primarily in East Asian writing systems, such as Chinese, Japanese, and Korean, to represent the number zero. It appears as a circular glyph, often contrasting with the more common numeral zero "0" in Western scripts, and is historically derived from Chinese numerical notation. This character is employed in contexts like dates, financial documents, and sequential numbering to clearly denote the absence of quantity, avoiding confusion with the letter "O." Unlike other zero characters, it is firmly rooted in the logographic tradition of East Asian languages, making it a unique and culturally specific representation of the concept of zero.
General Properties
| Code Point | U+3007 |
| Version Added | 1.1 |
| Name | Ideographic Number Zero |
| Block | CJK Symbols and Punctuation |
| General Category | Letter Number |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Left To Right |
Encodings
| HTML Decimal Encoding | 〇 |
| HTML Hex Encoding | 〇 |
| UTF-8 Encoding | 0xE3 0x80 0x87 |
| UTF-16 Encoding | 0x3007 |
| UTF-32 Encoding | 0x00003007 |
| C/C++/Java Escape | \u3007 |