Pi Day is an annual opportunity for math enthusiasts to recite the infinite digits of Pi, talk to their friends about math, and eat pie. Pi has been calculated to over 50 trillion digits beyond its decimal point.

March 14 or 3/14 is celebrated as pi day because 3.14 are the first digits of pi. Math nerds around the world love celebrating this infinitely long, never-ending number.

Learn about the number pi, why it is important in math, and what it is used to calculate!

The first million digits of pi (π) are below. Why not calculate the circumference of a circle using pi here. Or simply learn about pi here. Maximize the fun you…

Pi Day Deals Pi Day Merch Pi Quiz Find Your Birthday In Pi Celebrate Pi at School…

Pi Day is celebrated every year on the fourteenth of March around the world, and although we’re not celebrating actual pies, there can be pies involved in the celebration.

What is Pi in Math? The Pi Symbol One Million Digits of Pi…

Recite up to 150 digits of pi using your memory, how many digits can you memorize?

Home Learn About Pi Math Help Calculators Celebrate Pi Teacher Resources

Learn what the pi symbol represents and where it came from. Click here to see why pi is so great!