π

Greek Small Letter Pi

U+03C0

Quick Reference
Unicode
U+03C0
HTML Entity
π
HTML Numeric
π
CSS
\03C0
JavaScript
\u03C0
How to Type π
OSLayoutShortcut
Windows(you)UsAltGr + P
WindowsUkAltGr + P
WindowsGermanAltGr + P
macOSUsOption + P
macOSUkOption + P
macOSGermanOption + P
About Greek Small Letter Pi

Pi is the ratio of a circle's circumference to its diameter, approximately equal to 3.14159. It is one of the most important mathematical constants.

Usage

Used in geometry, trigonometry, physics, and engineering formulas. Example: circumference = 2πr.

Related Symbols
∞Infinity Symbol√Square Root Sign∑N-Ary Summation∫Integral Sign
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