⇔

U+21D4 LEFT RIGHT DOUBLE ARROW

Arrows · Math symbol

NameLEFT RIGHT DOUBLE ARROW
Code pointU+21D4
Decimal8660
BlockArrows
CategoryMath symbol (Sm)
UTF-8E2 87 94
UTF-1621D4
UTF-32000021D4
HTML⇔ ⇔ ⇔
CSS\21D4
JavaScript\u21D4
Python\u21d4
URL-encoded%E2%87%94

Frequently asked questions

What is the character U+21D4?

U+21D4 ⇔ is officially named LEFT RIGHT DOUBLE ARROW. It belongs to the Arrows block and the category Math symbol.

How do I type ⇔?

Windows (Word, WordPad): type 21D4, then press Alt+X. Linux (GTK/IBus): Ctrl+Shift+U 21d4, then Space. macOS: enable the “Unicode Hex Input” keyboard, hold Option and type 21D4. Or simply copy it from this page.

How do I write ⇔ in HTML?

As a numeric character reference ⇔ (decimal) or ⇔ (hexadecimal). In UTF-8 documents you can also insert the character directly. There is also the named entity ⇔.

How is ⇔ encoded in UTF-8?

In UTF-8 the character takes 3 bytes: E2 87 94. In UTF-16: 21D4.

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