U+00B1 "±" Plus-Minus Sign Unicode Character
Unicode Version 17.0
±
U+00B1 "±" Plus-Minus Sign is a typographic symbol that indicates an allowable tolerance, range, or approximation, commonly used in mathematics, science, and engineering to denote a value that could be either added or subtracted, such as in expressions like "5 ± 3" meaning a range from 2 to 8. It also appears in contexts like error margins, standard deviation, or when presenting two possible values, such as the positive and negative square roots of a number. Its visual design combines a plus sign placed directly above a minus sign, and it is distinct from the similar but separate "minus-or-plus" sign (∓).
General Properties
| Code Point | U+00B1 |
| Version Added | 1.1 |
| Name | Plus-Minus Sign |
| Unicode 1.0 Name | Plus-or-Minus Sign |
| Block | Latin-1 Supplement |
| General Category | Math Symbol |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | European Terminator |
Encodings
| HTML Decimal Encoding | ± |
| HTML Hex Encoding | ± |
| UTF-8 Encoding | 0xC2 0xB1 |
| UTF-16 Encoding | 0x00B1 |
| UTF-32 Encoding | 0x000000B1 |
| C/C++/Java Escape | \u00b1 |