U+3280 "㊀" Circled Ideograph One Unicode Character
Unicode Version 17.0
㊀
U+3280 "㊀" Circled Ideograph One is a CJK (Chinese, Japanese, Korean) symbol that represents the number one enclosed within a circle, often used as a decorative numeral or ordinal marker in East Asian contexts. It belongs to the Enclosed CJK Letters and Months block, and its design combines the character 一 (one) with a surrounding circle to create a concise, visually distinct glyph. This ideograph is commonly employed in lists, indexes, or signage to indicate the first item, and it also appears in traditional numbering systems for lunar calendar months or other sequential references in Chinese and Japanese writing.
General Properties
| Code Point | U+3280 |
| Version Added | 1.1 |
| Name | Circled Ideograph One |
| Block | Enclosed CJK Letters and Months |
| General Category | Other Number |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Left To Right |
| Decomposition Type | Circle |
| Decomposition Mapping | "一" U+4E00 CJK Unified Ideograph-# |
Encodings
| HTML Decimal Encoding | ㊀ |
| HTML Hex Encoding | ㊀ |
| UTF-8 Encoding | 0xE3 0x8A 0x80 |
| UTF-16 Encoding | 0x3280 |
| UTF-32 Encoding | 0x00003280 |
| C/C++/Java Escape | \u3280 |
Unicode Properties
| NFC Quick Check | Yes |
| NFD Quick Check | Yes |
| Numeric Type | Numeric |
| Numeric Value | 1 |
| Line Break | Ideographic |
| East Asian Width | Wide |
| Changes When NFKC Casefolded | Yes |
| NFKC Casefold | "一" U+4E00 CJK Unified Ideograph-# |
| NFKC Simple Casefold | "一" U+4E00 CJK Unified Ideograph-# |
| Script | Common |
| Script Extensions | Han |
| Indic Syllabic Category | Other |
| Vertical Orientation | Upright |
| Grapheme Base | Yes |
| Grapheme Cluster Break | Other |
| Word Break | Other |
| Sentence Break | Other |