Leftwards Arrow Over Rightwards Arrow Symbol

A symbol from the Arrow Symbols collection. Click the symbol or the button below to copy.

Arrow Symbols collection

Symbol: ⇆
Unicode: U+21C6
HTML entity: ⇆
Category: Arrow Symbols

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44 of 84 in the arrow symbols collection

About the leftwards arrow over rightwards arrow symbol

A paired set of arrows pointing in opposite directions, with the leftward arrow placed above the rightward one. This symbol is found in the Arrows block of Unicode and is categorized as an Other Symbol, meaning it functions as a graphic sign rather than a letter or number.

It is used in mathematical notation and technical diagrams to indicate a bidirectional relationship or a two-way exchange between elements. In chemistry, it can represent a reversible reaction, while in computer science and logic it often denotes mutual implication or data flowing in both directions. Its design distinguishes it from the single-headed arrows and the similar right-left arrow pair by the vertical stacking of the two arrowheads.

How to type Leftwards Arrow Over Rightwards Arrow

Native keyboard shortcuts for each operating system — derived from the codepoint, so the steps below are always accurate.

Windows

2 options

In Word / Outlook: type 21C6 then press Alt + X.
Anywhere: press Win + . to open the emoji & symbol picker, then search.

macOS

2 options

Enable “Unicode Hex Input” in System Settings → Keyboard, then hold Option and type 21C6.
Or: Control + Command + Space opens the Character Viewer — search by name.