U+27FA "⟺" Long Left Right Double Arrow Unicode Character
Unicode Version 17.0
⟺
U+27FA "⟺" Long Left Right Double Arrow is a mathematical and logical symbol that represents a bidirectional equivalence or biconditional relationship between two statements, meaning that each implies the other and they are logically or operationally identical. It is distinct from a single line arrow because its double stroke emphasizes a two way or reversible connection, often used in formal logic, set theory, and mathematics to denote that two propositions are mutually dependent or equivalent. This character can also appear in technical diagrams and computer science contexts to indicate a two way mapping or correspondence between elements.
General Properties
| Code Point | U+27FA |
| Version Added | 3.2 |
| Name | Long Left Right Double Arrow |
| Block | Supplemental Arrows-A |
| General Category | Math Symbol |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Other Neutral |
Encodings
| HTML Decimal Encoding | ⟺ |
| HTML Hex Encoding | ⟺ |
| UTF-8 Encoding | 0xE2 0x9F 0xBA |
| UTF-16 Encoding | 0x27FA |
| UTF-32 Encoding | 0x000027FA |
| C/C++/Java Escape | \u27fa |
Unicode Properties
| NFC Quick Check | Yes |
| NFD Quick Check | Yes |
| NFKC Quick Check | Yes |
| NFKD Quick Check | Yes |
| Numeric Type | None |
| Numeric Value | NaN |
| Line Break | Alphabetic |
| Script | Common |
| Script Extensions | Common |
| Indic Syllabic Category | Other |
| Pattern Syntax | Yes |
| Math | Yes |
| Vertical Orientation | Rotated |
| Grapheme Base | Yes |
| Grapheme Cluster Break | Other |
| Word Break | Other |
| Sentence Break | Other |