National Pi Day 2024: Get a deal whether you prefer apple, cherry or pizza pie - Taco Bell, Pizza Hut, Little Caeser's, 7-Eleven and more have offers

Taco Bell, Pizza Hut, Little Caeser's, 7-Eleven, BJ's Restaurants, DiGiorno and more have offers for National Pi Day - which is today.

The 14th day of March every year (3/14) is known as Pi Day because the first three digits of the important mathematical constant pi are 3.14.

And this year, fast food chains including 7-Eleven, BJ's Restaurant and Brewhouse, Blaze Pizza, California Pizza Kitchen, Little Caesar's and Taco Bell are celebrating the occasion.

Pi is mathematically important because it describes the ratio between a circle's diameter and its circumference and was first approximated by Greek mathematician Archimedes in around 250 BC.

But Pi Day itself is comparatively recent and dates back to 1988 when physicist Larry Shaw began celebrations at the Exploratorium science museum in San Francisco.

Here are all the top Pi Day deals: 

A number of restaurants are slashing the prices of their pies to celebrate Pi Day

7-Eleven, Speedway and Stripes

The convenience store chain is offering its loyalty members a large pizza for the price of $3.14.

They are available at 7-Eleven, Speedway and Stripes stores on Thursday and customers are limited to two per person, in two separate transactions.

BJ's Restaurant and Brewhouse

Today at BJ's Restaurant you can get a mini one-topping pizza for $3.14 . The offer is only available when you dine in.

Blaze Pizza

At Blaze Pizza customers can get an 11-inch original dough pizza for $3.14.

As with many others, the offer is only available in person and for alternative crusts there will be an extra charge.

California Pizza Kitchen

Fans of CPK's pizzas are in luck because on Thursday they can get an original BBQ chicken pizza, pepperoni or traditional cheese pizza for $3.14.

They are only available if you spend more that $25 and the offer is good for dine-in only.

Little Caesar's

Little Caesars customers can save $3.14 off any one pizza. The offer is available on the restaurant‘s app and website and accessed using the code PIZZAPI.

Taco Bell

Pi Day is not only celebrated by pizza restaurants. Taco Bell is selling its famous Mexican Pizzas today for just $3.14.

The offer is only available when ordering through the Taco Bell app and is limited to just one per customer.

Polly's Pies

California bakery Polly's Pies will offer a discount on any pie or any bake at home item, a Pi symbol crust topper or a free slice of pie.

Pizza Hut

Pizza Hut will allow customers to claim a free large one topping pizza so long as they buy one menu-priced large pizza.

Noodles & Company

If you want to celebrate Pi Day without a pie, Noodles & Company is offering shareable dishes for $3.14 to its rewards members.

DiGiorno

This deal will last slightly longer than a day. Starting on Thursday, DiGiorno is running a 'rescue program' that will last until April 11.