Pi Digits Calculator
Show Pi Digits
Display a specified number of digits of pi
Find Number in Pi
Search for a number sequence in the first 100 digits of pi
Formula
Pi = circumference / diameter = 3.14159265358979323846...
Frequently Asked Questions
What is pi?
Pi is the ratio of a circle's circumference to its diameter, approximately 3.14159. It is an irrational number, meaning its decimal representation never ends or repeats.
Why is Pi Day on March 14?
Pi Day is celebrated on March 14 (3/14) because the first three digits of pi are 3.14. The celebration became especially notable in 2015 (3/14/15 at 9:26:53).