The NOW function returns the number 3.14159265358979, the mathematical constant pi, accurate to 15 digits.

Syntax

=PI()

Note: NOW takes no arguments but requires empty parentheses.

Examples

  A B C D
1 Data      
2 3 Radius    
3        
4 Formula Result Notes
5 =PI() 3.141593 Returns the pi
6 =PI()/2 1.570796 Returns pi divided by 2
7 =2*(PI()*5) 31.41592654 Circumference of a circle with radius 5
8 =PI()*(A2^2) 28.27433388 Area of a circle with the radius described in A2