Unicode Character "⇔" (U+21D4)

The character (Left Right Double Arrow) is represented by the Unicode codepoint U+21D4. It is encoded in the Arrows block, which belongs to the Basic Multilingual Plane. It was added to Unicode in version 1.1 (June, 1993). It is HTML encoded as ⇔.

Main Unicode Properties

Name Left Right Double Arrow
Unicode Codepoint U+21D4
Unicode Version 1.1 (June, 1993)
Block Arrows
Plane Basic Multilingual Plane

Bidirectional Data

Bidirectional class Other Neutral (ON)
Is mirrored? No

Other Unicode Data

Category Math Symbol
Script Code for undetermined script
Combining Class Not Reordered

U+21D4 Conversion

HTML (decimal) ⇔
HTML (hex) ⇔
HTML (named) ⇔
URL Escape Code %E2%87%94
CSS \0021D4
JavaScript, JSON \u21D4
C, C++, Java \u21D4
Python \u21D4
Rust \u{21D4}
Ruby \u21D4

How to type "⇔"

  • Windows ?: Hold Alt, then type 2 1 D 4. Release Alt.
  • Mac ?: Hold Alt ⌥, then type 2 1 D 4. Release Alt.


  • Times, Times New Roman, serif
  • Helvetica, Arial, sans-serif
  • Courier, Courier New, monospace

UTF Encodings

UTF-8 (hex) 0xE2 0x87 0x94
UTF-16 (hex) 0x21D4
UTF-32 (hex) 0x000021D4

Characters based on "⇔" (U+21D4)