Technical information

Symbol
NameRightwards arrow over leftwards arrow
Unicode numberU+21C4
CategoryPaired triangle-headed arrows
DescriptionThe Unicode character ⇄, or U+21C4, is known as the "Rightwards Arrow Over Leftwards Arrow". It belongs to the "Arrows" block and falls under the "Symbol, Math" category in the Unicode standard. This character is a graphic representation of two horizontal arrows, one pointing right and layered on top of another pointing left. It is commonly used in contexts to represent exchange, swap, or mutual actions between two entities. The specific appearance and usage of this character can depend on the system and application it's being used in.

Encoding

HTML Entity⇄
HTML Entity (hex)⇄
HTML Entity (named)
URL Escape Code%E2%87%84
UTF-8 (hex)0xE2 0x87 0x84
UTF-8 (binary)11100010:10000111:10000100
UTF-160x21C4
UTF-320x000021C4

Source Code

C, C++, and Java"\u21C4"
CSS Code\21C4
JavaScript"\u21C4"
Perl\x{21C4}
Python 2u"\u21C4"
Python 3\u21C4
Ruby\u{21C4}

Preview

This Unicode character looks like this ⇄ in sentence and in bold like this and in italic like this .

Font size:

12px
16px
20px
28px
36px
48px
72px

CSS Property: font-weight

100
200
300
400
500
600
700
800
900

HTML Forms and Input

input
disabled input
input-group
select
button
button

Code examples in HTML and CSS

<span>&#8644;</span>

            
span {
    content: "\21C4";
}

The symbol in different fonts

-apple-system
Apple Color Emoji
Arial
BlinkMacSystemFont
Courier New
Georgia
Droid Sans
Helvetica
Noto Sans
Oxygen
Roboto
"Segoe UI"
sans-serif
Segoe UI Emoji
Segoe UI Symbol
system-ui
Times New Roman
Ubuntu
Verdana

References