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

Pi Shirt - Irrational but well-roundednumbers of pi tshirtChicken Pot Pi Shirt - Bluepi shirt

pi tshirt Pie day shirtPizza Pi shirtWhite Pi Shirt

2077 spiral pi day shirtPi Day pocket shirt Pi Day Shirt - Gray

Pi Day Socks



Pi Socks Pi SocksPi Socks

Pi Day Books

Sir Cumference and the Dragon Of Pi Book It Happened One Pi Day Book

Pi Day Baking Supplies

Pi Cookie CutterPi Pan

Pi Day Mugs

I 8 sum pi and it was delicious mug math equation pi day mug Raspberry Pi mug Numbers of Pi mug

Pi Day Teacher Supplies

Pi erasersPi PenPi Pencils

Pi Day Decorations

Pi Day TapestryPi Balloons