Left Right Double Arrow
Part of Arrows
Left Right Double Arrow has no standard Windows Alt code. Copy the character directly, or use its HTML entity or Unicode value instead.
- Alt code
- None
- HTML entity
- ⇔
- Unicode
- U+21D4
About this symbol
⇔ means “if and only if”: each side implies the other, so the two statements are either both true or both false. Mathematicians often write it in words as iff.
Unicode facts
- Official name
- LEFT RIGHT DOUBLE ARROW
- Type
- Maths symbol
- Unicode block
- Arrows
- Unicode group
- Double arrows
- Added in
- Unicode 1.1 (1993)
Click the symbol or any value at the top of the page to copy it. See the full Arrows chart for related characters.