Pretty much everyone loves pie. Whether you lean toward apple or blueberry, key lime, pecan or even pizza, there’s a pie for nearly every preference. And while pie does have its own official holiday, in January, plenty of people also eat it to celebrate another holiday in March.

Pi Day, a day to honor the mathematical constant “pi,” which was recognized by the U.S. House of Representatives in a non-binding resolution in 2009, lands every year on March 14 — or 3.14. (Pi, for those of you who didn’t pay attention in math class, equals approximately 3.14159, which is the ratio of a circle’s circumference to its diameter.)

Plenty of restaurant chains offer freebies and deals on pie and pizza pie, to help fans of both pi and pie to mark the day. Here are a few deals to help you celebrate.

Anthony’s Coal Fired Pizza & Wings: For Pi Day this year, the pizza and wings chain is offering 31.4 percent off a large 16-inch pizza when you dine-in on March 14.

BJ’s Restaurant & Brewhouse: BJ’s is celebrating Pi Day by offering dine-in guests the chance to purchase one regular, full-size Pizookie dessert (any flavor) on March 14 and get a second one for $3.14.

Blaze Pizza: The fast-casual pizza chain is celebrating Pi Day 2025 with a BOGO deal: Customers can buy one 11-inch pizza and get a second 11-inch pizza of equal or lesser value for $3.14. Plus, any guest who takes advantage of the in-restaurant Pi Day deal on March 14 will get a code they can redeem any time through the end of March in the Blaze Pizza app to get another buy one, get one for $3.14 pizza deal.

Burger King: Burger King is inviting its Royal Perks members to count down to (and just past) Pi Day with a full week of daily breakfast offers, March 9 through 15. With a purchase of one dollar or more, the chain will offer a free Croissan’wich on March 9, a free four-piece order of Churro Fries on March 10, a free medium Iced Coffee on March 11 and a free five-piece order of French Toast Sticks on March 12, a free large Hash Browns on March 13. On National Pi Day itself, March 14, the chain is offering a free Hershey Pie with a purchase of $3.14 or more. And on the day after Pi Day, March 15, you can recover from the numerical excitement with a free Sausage Biscuit with a purchase of one dollar or more.

California Pizza Kitchen: California Pizza Kitchen is marking Pi Day by offering CPK Rewards members a $3.14 pizza (Original BBQ Chicken Pizza, Pepperoni or Traditional Cheese) with a minimum purchase of $25 (excluding tax, delivery fee, gratuity and alcohol) on March 13 and 14. The two-day-only offer is valid for dine-in, take-out and orders at cpk.com.

Cicis Pizza: On March 14, at Cicis Pizza, you can order one medium or one large one-topping pizza and get a second pizza of equal or lesser value for $3.14. For online orders, use the coupon code PIDAY; for in-store orders use the coupon code 23052.

Crust Pizza Co.: On March 14, when you buy a large pizza at Crust for dine-in or carry-out, you can get another large one-topping pizza for $3.14.

DiGiorno x Hidden Valley Ranch: The pizza and dressing brands are joining forces to drop a limited-edition merch collection at noon ET on March 14 in celebration of Pi Day. The Obsession Collection, which celebrates an “iconic food pairing” and includes a crew neck sweatshirt, athletic crew socks, tote bags and lapel pins, will be given away here (no purchase necessary) on a first come, first serve basis, while supplies last.

DoorDash: The online food ordering and delivery service is offering nationwide Pi Day deals from three popular pizza chains: Pizza Hut, Sbarro and Hungry Howies. Get $6 off eligible orders of $30 or more from all participating Pizza Hut locations on DoorDash on March 14. Get $7 off ($8 off, for DashPass members) eligible orders of $25 or more from all participating Sbarro locations on DoorDash from March 13 to 15. And get a free Howie Bread with a minimum purchase of $30 or more from all participating Hungry Howie’s Pizza locations on DoorDash from March 14 to 15.

Famous Dave’s: Participating locations of the pit barbecue chain are offering customers a free slice of Bakers Square pie with a $10 minimum purchase on dine-in, to-go and online orders on March 14.

Goldbelly: Now through March 14, the nationwide-food-shipping platform is offering a Pi Day Sale featuring discounts up to 31.4 percent off the prices of pies from popular regional eateries.

Grimaldi’s: The brick-oven pizza chain will mark Pi Day at select locations by offering its “giant” slices of pizza for $3.14 from 11 a.m. to 3 p.m. on Friday, March 14. You can also add a personal house or Caesar salad and a fountain drink for a few dollars more, and additional toppings for 75 cents apiece.

Marco’s Pizza: Marco’s invites customers to celebrate National Pi Day with a medium one-topping pizza for $3.14 with the purchase of any large or extra-large menu-priced pizza on March 14. The offer is available for online and app orders only, using the code PIDAY.

Papa Murphy’s: On March 14, at take-and-bake pizza chain Papa Murphy’s, customers will get 31.4 percent off their orders placed online (no cart minimum), when they use promo code: PIDAY25. The Pi Day discount applies to regular-priced menu items only and is limited to one per customer.

Pizza Hut: This year, for Pi Day, Pizza Hut is introducing build-your-own “Pizza Charcuterie” boards, a “fresh take on the classic charcuterie board” featuring a “customizable spread featuring your favorite Pizza Hut menu items.” Basically, it’s a deal on arrangeable elements (available here): For $24.99, you get two Medium pizzas (you can choose from different crust and flavor options), eight boneless chicken wings and a selection of breadsticks and dips.

Village Inn: This casual-dining restaurant chain, which prides itself on its pies, is marking Pi Day on March 14, by offering a free slice of pie with the purchase of an entrée and beverage. The offer is available for dine-in customers at participating locations only.

7-Eleven: This year, 7-Eleven says it’s offering “infinite reasons to celebrate Pi Day with deals beyond pizza pi(es).” On March 14, 7Rewards and Speedy Rewards members can purchase a whole pizza of any flavor for $3.14 at participating 7-Eleven, Speedway and Stripes stores or get it delivered through the 7NOW Delivery app. Customers can also get $3.14 Laredo Taco Company cheese, chicken or beef-fajita quesadillas or a $3.14 Raise the Roost Chicken Tender Box with three crispy tenders, one dipping sauce and one biscuit, where available.

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