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⇄

rightwards arrow over leftwards arrow

Rightwards Arrow Over Leftwards Arrow

⇄ marks a process or exchange that can run in both directions. In chemistry, it signals a reversible reaction; the arrow alone does not establish that the reaction is at equilibrium.

Text symbol

What ⇄ means

Read it as a path that can run either way.

In chemistry, ⇄ is a reversible reaction arrow: substances on either side can become the other. The symbol alone does not show equal rates.

Its spacing can vary by typeface; the top arrow points right and the lower arrow left.

Part of collections

Don't confuse it with

3

Rightwards Harpoon Over Leftwards Harpoon

⇄ vs ⇌: ⇌ has harpoon heads and commonly marks equilibrium; ⇄ has plain arrowheads.

Leftwards Arrow Over Rightwards Arrow

Its arrows are stacked in the opposite order: the top arrow points left.

Left-Right Arrow

It is one line with arrowheads at both ends, not two stacked arrows.

Combination ideas

4

Either side can become the other

Translate between English and Ukrainian

Convert between dollars and euros

Two-way sync: changes travel both ways

Questions people ask

1

Why does ⇄ show as a box on some devices?

Because that device's fonts have no glyph for it. The character is still correct and still copies correctly — the box is a missing glyph, not a broken character.

Collections with ⇄

3

⌨️Terminal Symbols & Emoji277 symbols

👻Snapchat Emoji Meanings231 symbols

🎧Spotify Symbols250 symbols

How to type or find ⇄

Search it as: rlarr · rightleftarrows · reversible arrow · two-way arrow
Shows up in: Anything that takes text · its shape is whatever your font draws

Windows (Word)

⎇Alt+XType 21C4, then AltX to get ⇄.

Windows

⊞Win+Rrun charmap for the full table, or use the emoji picker's Ω symbols tab (Win .).

macOS

⌃Control+⌘Command+␣SpaceOpen the character viewer and search “rightwards arrow over leftwards arrow”.

Linux

⎈Ctrl+⇧Shift+UType 21c4, then Enter or Space.

HTML

⇄

CSS

\21C4

Windows

How to type ⇄ in Word: type 21C4, then press Alt+X.

HTML

HTML entity for ⇄: use ⇄ or &rightleftarrows;.

Code

In code, use \u21C4 in languages that support Unicode escapes.

Codes and encoding1 code points

HTML decimal

⇄

HTML hex

⇄

CSS content

content: "\21C4";

Each escape is closed by the next backslash; a trailing space is needed before a literal hex digit.

URL encoded

%E2%87%84

1

On screen

1

Code points

1

JS .length

3

UTF-8 bytes

A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.

Families this belongs to

1

Arrows & direction696 symbols

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