Excel PI Function
Summary
The Excel PI function returns the value of pi. For example, the formula =2*PI() * 3 returns the circumference of a circle with a radius of 3.
Purpose
Get the value of π
Return value
3.14159265358979
Syntax
=PI ()
Arguments
Usage notes
The return value, 3.14159265358979, is accurate to 15 digits. Here are a few formula examples:
=PI()=PI()/2=2*PI()*r