It's a day that brings math lovers, sweet-toothed pie enthusiasts and pizza fanatics together — National Pi Day.
National Pi Day 2018 — which celebrates the mathematical constant shortened to 3.14 and is naturally held every year on March 14 (3/14) — includes a long list of deals on pizza (pie) and regular pie-pie.
The March 14 holiday often feature prices discounted to (yep) $3.14, and sometimes, you can simply get free pie.
While there are no National Pi Day deals per se this year from Domino's or Pizza Hut, each pizza chain has its own ongoing deals, like buy-one-get-one-free at Domino's now through March 18, and $5.99 two-topping medium pizzas at Pizza Hut when you buy at least two.
Here are all the best 2018 National Pi Day deals at participating locations, including special offers from Whole Foods, Boston Market, and Blaze Pizza.
Any whole pie is $2 off on March 14. National Pi Day 2018 also happens to coincide with Baker Square's Free Pie Wednesday promotion, and all customers get a free slice of pie with any menu item purchase from 10:30 a.m. until closing.
Individual pizzas are $3.14 in honor of National Pi Day 2018 for each customer ordering in person at participating locations.
Customers can get three sweet potato pies for a total of only $3.14 on National Pi Day.
Bring in this coupon available at the Boston Market website (or just show it on your phone) on March 14 and you'll get one chicken pot pie for free with the purchase of another pot pie and a drink.
When you buy an adult buffet at regular price (about $6) on National Pi Day 2018, you can get a second buffet for $3.14.
Make any purchase at GT Pie Company's 16 shops and you'll get a free slice of Michigan ABC Pie, made with apples, blueberries, and cherries.
Purchase any Howie Bread at regular price on National Pi Day and you can get a one-topping medium pizza for $3.14.
Diners who purchase any entrée get a free slice of pie at O'Charley's on March 14.
Large one-topping pizzas are available for online order at the special price of $3.14 on National Pi Day, no coupon or promotional code necessary.
Sign up for marketing emails from Pieology and you'll instantly get a coupon good for a $3.14 pizza when you buy one pie at regular price. This deal is only available on National Pi Day.
Customers can select any pizza for just $3.14 on National Pi Day.
Enter your email to get a coupon good for a whole cheese Neopolitan pie for $3.14 on National Pi Day 2018.
Large bakery pies are being discounted by $3.14 on March 14 at Whole Foods Markets, while supplies last.
Individual pizzas are priced at $3.14 on National Pi Day 2018. The deal is good for in-person orders only (no call-ins or online orders), and there is a limit of one Pi Day deal per customer.