Unless you’re a mathematician, Pi Day may not seem like the most exciting holiday at its core.

And of course, that includes a special Pi Day offer.

The fast-casual chain will sell whole 11-inch pizzas for just $3.14 on March 14.

Restaurant Pi Day deals

Photos: Courtesy of Polly’s Pies, Blaze Pizza, BJ’s Restaurant & Brewhouse. Design: Eat This, Not That!

The deal will only be valid for in-store customers at participating locations across the United States.

This offer will be available both in stores and online.

Non-members can also enjoy a free slice of pie on Pi Day with an entree purchase.

Burger King Hershey Sundae Pie

Burger King

Anyone looking to claim the discount will need to apply the code “SPRINGBOGO.”

Any customer who orders one large pizza can get another for half off on March 14.

This deal will be available through the Peter Piper Pizza app at participating locations.

Blaze Pizza customer in a shirt with Pi symbol eating pizza

Courtesy of Blaze Pizza

The convenience store chain also has a couple of extra goodies lined up for fans via its 7NOW app.

Nutrition information has been included where available.

BJ’s Mini Deep Dish pizza on a plate next to a cup of soda

Courtesy of BJ’s Restaurant & Brewhouse

california pizza kitchen the original bbq chicken pizza

California Pizza Kitchen / Facebook

Pieology pizzas

Pieology / Facebook

kona grill sign

The Image Party / Shutterstock

Round Table Pizza cheese pizza on dark background

Courtesy of Round Table Pizza

Polly’s Pies double crust pie with pi sign

Courtesy of Polly’s Pies

Peter Piper Pizza pepperoni pizzas

Courtesy of Peter Piper Pizza

7-Eleven Pi Day deals

7-Eleven