This day only comes 'round' once every year!

What you’ll get is a pretty good estimate of the irrational number pi (3.14159...). To celebrate Pi Day this year, here are three ways to estimate pi using random chance that you can try out at home.

Some numbers are useful. Some are famous. And then there is pi, a number so absurdly powerful that humanity has spent ...

Math, but make it fun.

In the spirit of the holiday, here are 3.14 things you may not know about pi: 1. No one is certain who discovered pi as we ...

Google celebrates Pi Day 2026 with a doodle honoring Archimedes' method for estimating pi, highlighting the significance of ...

Google is marking Pi Day 2026 with a unique doodle, paying tribute to ancient Greek mathematician Archimedes and his pioneering work in calculating pi (π).