U+2080 "₀" Subscript Zero Unicode Character
Unicode Version 17.0
₀
U+2080 "₀" Subscript Zero is a typographic symbol specifically designed to appear smaller and lower than a standard digit, intended for use in mathematical, chemical, and scientific notation to denote subscripts like in chemical formulas such as H₂O or in mathematical expressions showing base values. It belongs to the Superscripts and Subscripts block of Unicode and is distinct from the regular digit zero, ensuring that text rendering remains precise and unambiguous in formal documents. This character is not typically used for general writing but serves a specialized function in technical and academic contexts where accurate notation is essential.
General Properties
| Code Point | U+2080 |
| Version Added | 1.1 |
| Name | Subscript Zero |
| Unicode 1.0 Name | Subscript Digit Zero |
| Block | Superscripts and Subscripts |
| General Category | Other Number |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | European Number |
| Decomposition Type | Sub |
| Decomposition Mapping | "0" U+0030 Digit Zero |
Encodings
| HTML Decimal Encoding | ₀ |
| HTML Hex Encoding | ₀ |
| UTF-8 Encoding | 0xE2 0x82 0x80 |
| UTF-16 Encoding | 0x2080 |
| UTF-32 Encoding | 0x00002080 |
| C/C++/Java Escape | \u2080 |
Unicode Properties
| NFC Quick Check | Yes |
| NFD Quick Check | Yes |
| Numeric Type | Digital |
| Numeric Value | 0 |
| Line Break | Alphabetic |
| Changes When NFKC Casefolded | Yes |
| NFKC Casefold | "0" U+0030 Digit Zero |
| NFKC Simple Casefold | "0" U+0030 Digit Zero |
| Script | Common |
| Script Extensions | Common |
| Indic Syllabic Category | Other |
| ID Compat Math Continue | Yes |
| Vertical Orientation | Rotated |
| Grapheme Base | Yes |
| Grapheme Cluster Break | Other |
| Word Break | Other |
| Sentence Break | Other |