Pi Day T-Shirts

Showing: 1 – 30 of 71 Pi Day T-Shirts & Tees designs available on 2,208 products

Math lovers: Take pride in being irrational with a Pi Day T-shirt from TeeShirtPalace!

Our friends in the United Kingdom and parts of Europe write dates a little differently: Instead of month/day/year like in the U.S., they go day/month/year. We get the logic, but because there is no 14th month, those poor Brits, who have even more varieties of pie than us, don’t get to celebrate Pi Day.

Held on March 14, Pi Day is a day to celebrate mathematics by highlighting the famous never-ending, non-repeating number. Defined as the ratio of a circle’s circumference to its diameter, pi is a significant part of many important formulas in math and physics.

Our line of Pi Day shirts celebrates all sorts of wonderful math and delicious pies. You’ll find so many pi shirt varieties including funny math jokes, cool graphics, inspirational quotes and so much more. All of our colors and styles will help you fit your fashion, and our either 100% cotton or poly-cotton blends will help ensure your pi T-shirt stays comfortable without end.