U+21C6 "⇆" Leftwards Arrow over Rightwards Arrow Unicode Character
Unicode Version 17.0
⇆
U+21C6 "⇆" Leftwards Arrow over Rightwards Arrow is a specialized arrow symbol that combines a leftward and a rightward arrow stacked vertically, representing bidirectional flow, exchange, or alternation between two directions. Often used in mathematical notation, chemistry for equilibrium reactions, or user interface design to indicate a toggle or swap action, this character belongs to the Arrows block of Unicode and is formally named "Leftwards Arrow over Rightwards Arrow." Its visual design places the left-pointing arrow above the right-pointing arrow, distinguishing it from similar bidirectional symbols like the left-right arrow.
General Properties
| Code Point | U+21C6 |
| Version Added | 1.1 |
| Name | Leftwards Arrow over Rightwards Arrow |
| Unicode 1.0 Name | Left Arrow over Right Arrow |
| Block | Arrows |
| General Category | Other Symbol |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Other Neutral |
Encodings
| HTML Decimal Encoding | ⇆ |
| HTML Hex Encoding | ⇆ |
| UTF-8 Encoding | 0xE2 0x87 0x86 |
| UTF-16 Encoding | 0x21C6 |
| UTF-32 Encoding | 0x000021C6 |
| C/C++/Java Escape | \u21c6 |
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 |
| Other Math | Yes |
| Vertical Orientation | Rotated |
| Grapheme Base | Yes |
| Grapheme Cluster Break | Other |
| Word Break | Other |
| Sentence Break | Other |