U+2084 "₄" Subscript Four Unicode Character
Unicode Version 17.0
₄
U+2084 "₄" Subscript Four is a numeric glyph used primarily in mathematical, scientific, and chemical notation to denote the number four in a subscripted position, such as in chemical formulas like H₂SO₄ or in indexing variables in equations. It is part of the Superscripts and Subscripts block within Unicode, standardized for digital text to ensure consistent rendering across platforms, and is distinct from a regular digit four placed below the baseline through formatting. This character enables precise representation of subscripts without relying on proprietary formatting or markup languages.
General Properties
| Code Point | U+2084 |
| Version Added | 1.1 |
| Name | Subscript Four |
| Unicode 1.0 Name | Subscript Digit Four |
| Block | Superscripts and Subscripts |
| General Category | Other Number |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | European Number |
| Decomposition Type | Sub |
| Decomposition Mapping | "4" U+0034 Digit Four |
Encodings
| HTML Decimal Encoding | ₄ |
| HTML Hex Encoding | ₄ |
| UTF-8 Encoding | 0xE2 0x82 0x84 |
| UTF-16 Encoding | 0x2084 |
| UTF-32 Encoding | 0x00002084 |
| C/C++/Java Escape | \u2084 |
Unicode Properties
| NFC Quick Check | Yes |
| NFD Quick Check | Yes |
| Numeric Type | Digital |
| Numeric Value | 4 |
| Line Break | Ambiguous (Alphabetic or Ideographic) |
| East Asian Width | Ambiguous |
| Changes When NFKC Casefolded | Yes |
| NFKC Casefold | "4" U+0034 Digit Four |
| NFKC Simple Casefold | "4" U+0034 Digit Four |
| Script | Common |
| Script Extensions | Common |
| Indic Syllabic Category | Syllable Modifier |
| ID Compat Math Continue | Yes |
| Vertical Orientation | Rotated |
| Grapheme Base | Yes |
| Grapheme Cluster Break | Other |
| Word Break | Other |
| Sentence Break | Other |