What is Pi (π)?
Pi (π) is one of the most intriguing numbers in mathematics. It's the ratio of a circle's circumference to its diameter, remarkably appearing in various fields of science and mathematics.
Formula:
π = C / d
π = C / d
Mathematicians have calculated π to over one trillion digits beyond its decimal point. Here are its first few digits:
3.14159 26535 89793 23846 26433 ...
Interested in calculating your own values or finding more? Visit our π Calculator page!
Fun Facts and Links
- Pi is an irrational number, meaning it can't be exactly expressed as a simple fraction.
- Pi Day is celebrated on March 14th (3/14) around the world. 🍰
- See how Pi is used in unexpected places in our Pi Everywhere guide.