This day only comes 'round' once every year!

Every year on March 14, classrooms, universities and research institutions across the world turn their attention to a subject ...

March 14 is celebrated as Pi Day because the date, when written as 3/14, matches the start of the decimal expansion 3.14159… of the most famous mathematical constant. By itself, pi is simply a number, ...

What is Pi Day? Whether you love math or you're just into some good dessert, this Saturday should be a sweet treat for you.

SAN FRANCISCO -- Every March 14, mathematicians, scientists and math lovers around the world celebrate Pi Day, a commemoration of the mathematical sign Pi. That's because the date written numerically ...

For University of Missouri mathematics professor Stephen Montgomery-Smith, Pi is inescapable. “It’s everywhere. I mean I don’t think there’s anybody who doesn’t use Pi somewhere, if you’re a ...

Learn these interesting facts about pi before Pi Day on March 14 Facts about pi you don’t want to miss How much do you really know about pi? Sure, you’ve heard about it in math class, but this famous ...

Math enthusiasts around the world, from college kids to rocket scientists, celebrate Pi Day on Thursday, which is March 14 or 3/14 — the first three digits of an infinite number with many practical ...

Pi Day 2026 is Saturday, March 14. Here's what Pi Day is, why it's always on March 14 and where to get deals in Florida on pizza and pies this year.