March 14 — a day you’re more likely than most others to eat — or throw — a pie and get a reduced price on your pizza. It’s all in celebration of pi (Greek letter π), the mathematical constant and infinite number whose first three digits are 3.14.

National Pi Day 2025 brings pizza and pie deals nationwide, with discounts like $3.14 pizzas and freebies from major chains.

March 14 is Pi Day, meaning there are a number of deals to take advantage of. Papa John’s Papa John’s is offering a buy one, get one deal today for rewards members. To capitalize on the deal purchase one large or extra-large pizza,