Thursday, March 14 is National Pi Day, a time to celebrate the number that represents the ratio of a circle's circumference to its diameter.
The number is known as π, the first letter of the Greek word "perimetros," which loosely translates to “circumference,” according to PiDay.org.
Pi, which is typically rounded down to 3.14, can actually go on forever. The most accurate value for Pi, according to Guinness World Records, is more than 62 trillion digits (62,831,853,071,796 to be precise), calculated in August 2021 by the University of Applied Sciences in Switzerland.
But Pi Day is about much more than just a number. It's also about scoring some great deals on actual pie, pizza pie and other treats. Looking for a sweet discount on perhaps the nation's nerdiest day? USA TODAY has you covered.
You don't have to be a whiz at math or science to celebrate National Pi Day. For the first Pi Day on March 14, 1988 at the Exploratorium in San Francisco, former physicist Larry Shaw led a celebration with fruit pies and tea.
Subsequent celebrations – spurred by the 2009 passage by theHouse of Representatives of a resolution marking March 14 as National Pi Day – have gone on to include all kinds of pies and pizza pies, too. Here's some deals to celebrate National Pi Day.
Members of the popular convenience store chain's 7Rewards and Speedy Rewards loyalty programs can get any large pizza for $3.14 in 7-Eleven, Speedway and Stripes stores on Thursday, March 14. (Limit one per transaction, two per day.)
That deal is good on the 7Now Delivery app, too. Plus, get free delivery with a purchase of $15 or more and get $14 off your purchase of $30 or more using the promo code PIDAYDEAL. (Limit one offer per customer, limited pickup and delivery area.)
The deals hit as 7-Eleven has brought back its Extreme Meat Pizza with pepperoni, Canadian bacon, beef crumble and bacon bits.
Get a 10-inch cheese pizza for $3.14 with any beverage purchase on Thursday, March 14, at Anthony's Coal Fired Pizza & Wings.
Get a mini one-topping pizza for $3.14 on Thursday, March 14, at BJ’s Restaurant & Brewhouse.
You can get an 11-inch pizza for just $3.14 at Blaze Pizza, which has more than 300 locations nationwide, for National Pi Day. The in-store only offer is good all day at participating Blaze Pizza restaurants across the U.S.
Burger King's Perks Week for members of its Royal Perks loyalty program started with the arrival of daylight saving time and continues with a National Pi Day special and more:
You must activate the offer in the “Offers” tab on the BK App or on bk.com before placing an order (Not valid on delivery orders or in Alaska, Hawaii and U.S. territories.)
Members of California Pizza Kitchen's CPK Rewards loyalty program can sign up and get a $3.14 pizza (choose from the Original BBQ Chicken Pizza, Pepperoni, or Traditional Cheese), with a $25 minimum purchase. Current rewards members will find this offer in their digital wallet on March 14.
And if you buy any two California Pizza Kitchen frozen pizzas starting Wednesday, March 13, you can get $3.14 back (while supplies last). Redeem the refund through the Ibotta app.
At Casey's locations on Thursday, March 14, on Pi Day, when you buy any large pizza, you can get a small pizza, breadsticks or wings for $3.14 with promo code PIDAY.
Starting on Pi Day, March 14, through April 11, if you get a damaged pizza from a delivery or carry-out fail, you can upload an image to DiGiornoPizzaRescue.com (or get the link in DiGiorno's Instagram bio) for a discount on a DiGiorno pizza.
Artificial intelligence-enabled pizza technology will assess the amount of damage your pizza encountered and unlock a digital coupon (0-30% damage, get $1 off; 31%-60% get $1.50 off; and 60%-100% get 2% off). You can redeem the coupon, which expires on May 9, 2024, at a grocery or supermarket (must be 18 or over, while supplies last; limit one coupon per mobile device. DiGiorno reserves the right to cancel or modify offer, or terminate participation, at any time).
Starting on National Pi Day through Saturday, March 16, DoorDash will be giving 50% off any pizza (with a minimum purchase of $3.14) from Godfather’s Pizza or Giordano’s using promo code PIDAY2024 at checkout.
Food ecommerce platform Goldbelly is offering 31.4% off all pies through National Pi Day on Thursday, March 14 (the promotion began on March 9). Options include desserts such as Apple Pie Baked in a Paper Bag from Wisconsin's The Elegant Farmer to pizza pies including Lou Malnati Pizza’s Deep Dish Pizza from Chicago.
Get a free slice of Michigan ABC (Apples, Blueberries and Cherries) Crumb Pie with any purchase at any of the Michigan-based Grand Traverse Pie Company locations on Thursday, March 14, National Pi Day. See additional deals at Offers.com.
Grimaldi’s has giant pizza slices for $3.14 from 11 a.m. – 3 p.m. on Pi Day. You can add additional toppings for 75 cents at select Grimaldi’s locations.
You can enter to win one of 314 Pi(e) Day Prize Packs, which include Keebler’s Graham, Pretzel and Mini Graham Crusts. Go to @keebler on Instagram; like the giveaway posts and tag a friend using #KeeblerPieDayEntry by March 14.
At Kona Grill, get a slice of apple pie for $3.14 with any entrée or steak purchase on Thursday, March 14.
Krystal is giving customers $3.14 off their online order of $10 or more on National Pi Day.
At Marco's Pizza on National Pi Day, get a medium one-topping pizza for $3.14 with the purchase of any large or extra-large menu-priced pizza (use code PIDAY2024; offer is good for online and app orders only).
Get $3.14 off select Marie Callender’s frozen multiserve dessert pies when shopping online at select retailers, including Walmart, Kroger and Amazon Fresh. Go to the Marie Callender's website to get the offer on Thursday, March 14 (while supplies last).
On Pi Day, members of Noodles & Company's Noodles Rewards loyalty program can add a shareable dish such as potstickers for $3.14 with the purchase of a regular entrée.
Papa John's Garlic Epic Stuffed Crust pizza starts at just $13.99 for Pi Day. The pizza chain has additional deals on Offers.com.
For National Pi Day on Thursday, March 14, get get 31.4% off all online orders at Papa Murphy’s (no cart minimum, regular priced items) with code PIDAY24.
Sign up for Perkins' eClub loyalty program and get 20% off your order within 24 hours.
Buy one large pizza at Peter Piper Pizza on Thursday for Pi Day and get one for 50% off.
On National Pi Day, Pie Five Pizza has $5 personal pan pizzas for members of its Circle of Crust loyalty program. New members also get a free 7-inch, one-topping pizza when they sign up for the rewards program.
Members of Pieology's Pie Life Rewards loyalty program will get two free perks on Thursday, March 14, when they order a Create Your Own (CYO) Pizza or Calzone. Perks include cookies, drinks and salad. Offer good in-store and online, through the Pie Life Rewards App or at Pieology.com. By unlocking Pies and Perks, customers will continue to get one free perk every day with your CYO purchase through the end of 2024.
Members of Round Table Pizza's Royal Rewards loyalty program can get a Personal Cheese Pizza for $3.14 with the purchase of a large or extra large pizza.
On Thursday, for National Pi Day, Schlotzsky’s is giving members of Schlotzsky's Rewards loyalty program $3.14 off any pizza or flatbread. (One per customer; excludes kid's meals and catering. Additional charges apply for extra toppings or gluten-free crust. Not valid with any other offer or reward, or third-party delivery. Service fee applies to online, in app, and certain call-in orders.)
First-time users of the Slice pizza ordering app get $5 off each of their first three orders during “Pi Weekend,” March 14-17, with code SlicePi5 ($25 order minimum).
Add a slice of apple pie to any entrée or steak purchase for $3.14 at STK Steakhouse for National Pi Day.
Get a Mexican Pizza at Taco Bell for for $3.14 on National Pi Day (one per user ).
All month at The Pizza Press, when you buy any pizza, get a second Signature Pizza for just $3.14.
The Austin-based bakery Tiny Pies ships nationwide. Its National Pi Day deals included a 12-pack of pies for $76.40, a six-pack for $38.70 and a 9-inch pie (apple crumb, cherry crumb, chocolate cream, key lime and Texas pecan) with an artisanal pastry pi symbol for $35.95.
Tombstone and Voodoo Ranger partnered to produce I(Pizza)A, a limited-edition pizza-flavored beer that will be available for purchase starting on National Beer Day (April 7). People can also visit the Voodoo Ranger site starting on National Pi Day through April 7 to enter for a chance to win a free four-pack of I(Pizza)A and one of the all-new Tombstone pizzas coming soon.
Get a free slice of pie on Thursday with the purchase of any entrée and beverage at participating Village Inn locations.
Contributing: Brett Molina.
Follow Mike Snider on X and Threads: @mikesnider & mikegsnider.
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