Pi Day Logo

Pi Day Merch

Celebrate Pi Day in style. Wear one of these official Pi Day shirts and join the world in celebrating the best day of the year. The compliments you’ll receive will go on and on, just like the digits of pi. Perfect for anyone who wants to celebrate Pi Day, but especially great for math lovers, pun lovers, engineers, and teachers. Don’t be irrational, get these shirts today! Also make sure to check out the other Pi Day merchandise we offer!


Official Pi Day Shirts

A t-shirt with a pi symbol and the phrase "irrational but well-rounded"A t-shirt with the numbers of pi forming a pi symbolA blue t-shirt with a chicken inside a pot that has the pi symbol on itA t-shirt with a grey and black pi symbol on it

A black t-shirt with a colorful pi symbol on it A picture of pi next to the word day on a t-shirtA pi symbol with a pepperoni pizza designA white t-shirt with the numbers of pi forming the pi symbol on it

A t-shirt displaying the numbers of pi in a spiraling designPi Day pocket shirt The Pi Day logo on a t-shirt