⇆

Left Arrow Over Right Arrow

Unicode
U+21C6
Category
Arrows
HTML Entity
⇆
CSS
\21C6
The Left Arrow Over Right Arrow symbol (⇆) features two parallel horizontal arrows pointing in opposite directions. Originally introduced in Unicode to represent reversible chemical reactions and mathematical functions, it is now widely used in user interfaces to indicate swapping, syncing, or data exchange. You'll frequently spot this symbol in technical documentation or as an icon for bidirectional processes.

How to Type

Windows
Alt + 8646
macOS
Control+Command+Space then search "left arrow over right arrow"
Linux
Ctrl+Shift+U then 21c6
HTML
⇆ or ⇆

In Programming

In technical writing and LaTeX (using \leftrightarrows), this symbol represents a reversible chemical reaction or dynamic equilibrium. Developers also use it in documentation to denote two-way data binding or bidirectional network traffic.

Read full meaning article

Tags

arrow bidirectional arrow chemical equilibrium chemistry arrow data exchange exchange left over right opposite arrows reversible reaction swap swap symbol sync icon transfer two-way arrow

Related Symbols

← Left Arrow ↑ Up Arrow → Right Arrow ↓ Down Arrow ↔ Left Right Arrow ↕ Up Down Arrow ↖ North West Arrow ↗ North East Arrow ↘ South East Arrow ↙ South West Arrow ↞ Left Two Headed Arrow ↠ Right Two Headed Arrow