What ≤ means
The bar includes equality. x ≤ 10 means x is no more than 10; 10 itself is allowed.
The notation developed from strict inequality signs, which exclude equality. John Wallis used a related form with a bar above in 1670; Pierre Bouguer used bars beneath the signs in 1734.
Don't confuse it with
3Questions people ask
1Can I write <= instead of ≤?
Yes. <= works as a plain-text substitute and is the actual operator in many programming languages.
How to type ≤
Windows (Word)
Alt+XType 2264, then Alt+X 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 “less-than or equal to”.
Linux
Ctrl+Shift+UType 2264, then Enter or Space.
HTML
≤CSS
\2264LaTeX
In a LaTeX math expression, use \leq or \le.
HTML
In HTML source, use ≤ or ≤.
Codes and encoding1 code points
HTML decimal
≤
HTML hex
≤
CSS content
content: "\2264";
Each escape is closed by the next backslash; a trailing space is needed before a literal hex digit.
URL encoded
%E2%89%A4
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.

