2021 Pi Day Deals and Specials for 3.14.21

Pi Day, which celebrates the ratio of a circle's circumference to its diameter (the ratio starts with 3.14 and goes on without an end that anyone's been able to calculate), is March 14th. With pi's relation to the circle, many-a-pizza-chain (possibly your favorite circle?) marks Pi Day with a deal or special.

Here's a list of them:

- 7-Eleven - Get a large pizza for $3.14 on March 14, 2021 at participating locations through the 7Rewards loyalty program in the 7-Eleven app or through the 7Now delivery app. For every whole pizza purchased at participating stores on the day, they'll donate a meal to Feeding America.

- Blaze Pizza - From March 14, through April 12, 2021, rewards members can get an 11-inch pizza for $3.14 (one-time use offer in the app). If you're not a member, you need to be signed up before Sunday to get the offer/coupon.

- BJ’s Restaurant & Brewhouse - Get half-off large pizzas for takeout and delivery on March 14, 2021 ordering through their website or app using the promo code "HALFOFF".

- Donatos Pizza - Love Rewards members who joined prior to March 14, 2021 can get $3.14 off a large signature pizza on March 14, 2021.

- Papa John's - Buy a large pizza online at regular menu price, get a second pizza for $3.14 of equal or lesser value at participating locations.

- Papa Murphy's - Get 31.4 percent off online orders of $20 or more when using the code "PIDAY" on March 14, 2021 at participating locations.

- Pieology - Get $3.14 off your purchase of $10 or more on March 14, 2021 in-store for Pie Life Rewards members.

- Pie Five Pizza - Rewards members can get $3.14 off any personal pizza on March 14, 2021.

- Marco's Pizza - Buy one large pizza and get another for $3.14 on Sunday, March 14, 2021 using the code "PIDAY".

- Mountain Mike's Pizza - Get $3.14 off any large pizza on Sunday, March 14, 2021 when using the promo code "PIZZA314".

- Pilot Flying J - Get a pizza for $9.99 from Mar. 12, to 14, 2021 through the Pilot Flying J app.

- The Pizza Press - On March 14, 2021, buy one regular-priced pizza and get a second pizza, cheesy garlic bread, or ice cream sandwich for $3.14 at participating locations.

- Uno Pizzeria & Grill - On March 14, 2021, individual Thin Crust cheese pizzas are $3.14 at participating restaurants and online. A list of participating locations can be found online at www.unos.com/pi-day.

- Your Pie - Rewards members get $3.14 off any 10-inch pizza March 14, through March 16, 2021 in-store and online. Excludes online special pizzas and only can be redeemed with the Your Pie Rewards app.

Photo via 7-Eleven.