U+21F9 "⇹" Left Right Arrow with Vertical Stroke Unicode Character
Unicode Version 17.0
U+21F9 "⇹" Left Right Arrow with Vertical Stroke is a typographic symbol that represents bidirectional movement or displacement, often used in mathematical notation, logic, or diagrammatic contexts to indicate a lateral shift or exchange relationship where a vertical constraint or neutral position is implied. Unlike a standard left-right arrow, the vertical stroke suggests a fixed reference line or a state of equilibrium, making it useful in fields such as physics or chemistry to denote reversible processes or symmetric transformations that are bounded by a central axis. Its design merges the horizontal bidirectional motion with a stable vertical marker, distinguishing it from similar arrows like the double-headed arrow with a bar (U+21D4) by emphasizing a perpendicular or static element within the directional flow.
General Properties
Encodings
| HTML Decimal Encoding |
⇹ |
| HTML Hex Encoding |
⇹ |
| UTF-8 Encoding |
0xE2 0x87 0xB9 |
| UTF-16 Encoding |
0x21F9 |
| UTF-32 Encoding |
0x000021F9 |
| C/C++/Java Escape |
\u21f9 |
Unicode Properties