U+3310 "㌐" Square Giga Unicode Character
Unicode Version 17.0
㌐
U+3310 "㌐" Square Giga is a CJK (Chinese, Japanese, and Korean) square symbol representing the word "giga" as a unit prefix, commonly used in Japanese typography to denote one billion of a given unit, such as in measurements of computing or data storage. It is part of the CJK Compatibility block, originally encoded for compatibility with legacy East Asian character sets like Shift JIS, where it appears as a single square glyph containing the katakana characters for "gi" and "ga". This character is primarily employed in vertical text or space-constrained contexts to succinctly represent the metric prefix, echoing the broader use of similar squared units like "kilo" or "mega" in Japanese writing.
General Properties
| Code Point | U+3310 |
| Version Added | 1.1 |
| Name | Square Giga |
| Unicode 1.0 Name | Squared Giga |
| Block | CJK Compatibility |
| General Category | Other Symbol |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Left To Right |
| Decomposition Type | Square |
| Decomposition Mapping | "ギ" U+30AE Katakana Letter Gi "ガ" U+30AC Katakana Letter Ga |
Encodings
| HTML Decimal Encoding | ㌐ |
| HTML Hex Encoding | ㌐ |
| UTF-8 Encoding | 0xE3 0x8C 0x90 |
| UTF-16 Encoding | 0x3310 |
| UTF-32 Encoding | 0x00003310 |
| C/C++/Java Escape | \u3310 |
Unicode Properties
| NFC Quick Check | Yes |
| NFD Quick Check | Yes |
| Numeric Type | None |
| Numeric Value | NaN |
| Line Break | Ideographic |
| East Asian Width | Wide |
| Changes When NFKC Casefolded | Yes |
| NFKC Casefold | "ギ" U+30AE Katakana Letter Gi "ガ" U+30AC Katakana Letter Ga |
| NFKC Simple Casefold | "ギ" U+30AE Katakana Letter Gi "ガ" U+30AC Katakana Letter Ga |
| Script | Katakana |
| Script Extensions | Katakana |
| Indic Syllabic Category | Other |
| Vertical Orientation | Transformed Upright |
| Grapheme Base | Yes |
| Grapheme Cluster Break | Other |
| Word Break | Katakana |
| Sentence Break | Other |