# ⇔ U+21D4 LEFT RIGHT DOUBLE ARROW

Double-lined arrow pointing both left and right, the if and only if or equivalence symbol in logic.

| | |
|---|---|
| Character | `⇔` |
| Codepoint | U+21D4 |
| Name | LEFT RIGHT DOUBLE ARROW |
| Block | [Arrows](https://unicodekit.com/block/arrows) |
| Script | Common |
| Category | Math Symbol (Sm) |
| Unicode version | 1.1 |
| HTML | `⇔` `⇔` |
| CSS | `\21D4` |
| JavaScript | `\u21D4` |
| UTF-8 | E2 87 94 |
| UTF-16 | 21D4 |

## Related characters

- ⇓ [U+21D3 DOWNWARDS DOUBLE ARROW](https://unicodekit.com/char/21D3)
- ⇕ [U+21D5 UP DOWN DOUBLE ARROW](https://unicodekit.com/char/21D5)
- ⇒ [U+21D2 RIGHTWARDS DOUBLE ARROW](https://unicodekit.com/char/21D2)
- ⇖ [U+21D6 NORTH WEST DOUBLE ARROW](https://unicodekit.com/char/21D6)
- ⇑ [U+21D1 UPWARDS DOUBLE ARROW](https://unicodekit.com/char/21D1)
- ⇗ [U+21D7 NORTH EAST DOUBLE ARROW](https://unicodekit.com/char/21D7)
- ⇐ [U+21D0 LEFTWARDS DOUBLE ARROW](https://unicodekit.com/char/21D0)
- ⇘ [U+21D8 SOUTH EAST DOUBLE ARROW](https://unicodekit.com/char/21D8)
- ⇏ [U+21CF RIGHTWARDS DOUBLE ARROW WITH STROKE](https://unicodekit.com/char/21CF)
- ⇙ [U+21D9 SOUTH WEST DOUBLE ARROW](https://unicodekit.com/char/21D9)
- ⇎ [U+21CE LEFT RIGHT DOUBLE ARROW WITH STROKE](https://unicodekit.com/char/21CE)
- ⇚ [U+21DA LEFTWARDS TRIPLE ARROW](https://unicodekit.com/char/21DA)

Page: https://unicodekit.com/char/21D4 · JSON: https://unicodekit.com/characters/21D4