Left Right Double Arrow ⇔

U+21D4
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Symbol Meaning

Left Right Double Arrow. Arrows.

The symbol “Left Right Double Arrow” is included in the “Double arrows” subblock of the “Arrows” block and was approved as part of Unicode version 1.1 in 1993.

Unicode Name Left Right Double Arrow
Unicode Number
HTML Code
CSS Code
Entity ⇔
Plane 0: Basic Multilingual Plane
Unicode Block Arrows
Unicode Subblock Double arrows
Unicode Version 1.1 (1993)
Type of paired mirror bracket (bidi) None
Composition Exclusion No
Case change 21D4
Simple case change 21D4
Math +
Grapheme_Base +
scripts Common
Pattern_Syntax +
Encoding hex dec (bytes) dec binary
UTF-8 E2 87 94 226 135 148 14845844 11100010 10000111 10010100
UTF-16BE 21 D4 33 212 8660 00100001 11010100
UTF-16LE D4 21 212 33 54305 11010100 00100001
UTF-32BE 00 00 21 D4 0 0 33 212 8660 00000000 00000000 00100001 11010100
UTF-32LE D4 21 00 00 212 33 0 0 3558932480 11010100 00100001 00000000 00000000

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