Pizza Pi Day: Celebrating 3.14 With a Slice
March 14th—Pi Day—is a day dedicated to math lovers, number enthusiasts, and, most importantly, pizza lovers. Because while Pi (π) represents the never-ending ratio of a circle’s circumference to its diameter, we all know the best kind of circle is a hot, cheesy pizza straight out of the oven.
Pi Day isn’t just for math lovers and number enthusiasts. It’s become a fun, educational holiday celebrated in classrooms, homes, and daycares across the country. So let’s be real—forget about memorizing 3.1415926535 and celebrate Pi Day with some pizza and fun ideas!
A Quick History of Pi Day (And Why It Involves Food)
Pi Day was founded in 1988 by physicist Larry Shaw at the San Francisco Exploratorium, where staff celebrated with—what else?—actual pies! They even marched in a circular parade (because what’s more Pi-like than walking in circles?). The celebration caught on, and in 2009, the U.S. House of Representatives officially recognized March 14th as Pi Day—which also happens to be Albert Einstein’s birthday.
Since Pi is 3.14, the date naturally became an annual math holiday. Over time, people started celebrating not just with dessert pies but also with pizza pies because, well, pizza makes everything better.
Why Pizza is the Perfect Pi Day Food
You could bake a traditional pie… but let’s be real—pizza is way more fun, way less messy, and a lot easier to share. Here’s why pizza is the ultimate Pi Day meal:
It’s a perfect circle—just like Pi itself.
It involves math—measuring, slicing, and dividing pizza is basically geometry in action.
It brings people together—whether in a classroom or around the dinner table, pizza makes learning (and eating) a social experience.
Plus, if you’re celebrating with kids, you know they’re way more excited about a pizza party than memorizing digits of Pi. (Though if they can recite more than 10, we say they’ve earned an extra slice.)
Fun Pi Day Activities to Pair With Your Pizza
Pi Day is all about celebrating math in creative ways—especially with food! Whether you’re a teacher, parent, or daycare provider, here are some fun and easy ways to make Pi Day extra special:
Create a Pi Day Pizza-Making Station
Let kids decorate their own mini pizzas using different toppings to create fun patterns—turning pizza into a hands-on math lesson! Bonus points if they shape their pizza toppings into the π symbol before baking.
Teach “Pizza Math”
Have kids measure the diameter and circumference of their pizza using string. Show them how to divide a pizza into equal fractions (half, quarters, eighths). Ask: If a large pizza has 8 slices, how many people can share it if everyone gets 2 slices?
Pi Day Trivia Challenge
Test your group’s knowledge with fun facts like:
- Q: When is Pi Day celebrated every year? A: Pi Day is celebrated on March 14th (3/14) because Pi starts with 3.14!
- Q: Which famous scientist was born on Pi Day? A: Albert Einstein was born on Pi Day, March 14, 1879!
- Q: How many digits of Pi did a world record holder recite from memory? A: A man named Rajveer Meena recited 70,000 digits of Pi from memory while blindfolded!
- Q: What time is the “official” Pi Day celebration? A: The official celebration time is 1:59 PM, because when you put it with the date (3.14), it makes 3.14159, the first six digits of Pi!
Watch a Math-Themed Movie
After your pizza party, unwind with a fun math-inspired movie like The Lego Movie (problem-solving), Hidden Figures (STEM inspiration), or, of course, Life of Pi.
How to Celebrate Pi Day With Spizzico
Whether you’re a teacher looking for an easy classroom lunch, a parent planning a fun at-home activity, or a group hosting a Pi Day party, Spizzico has your pizza needs covered. Order a classic cheese or pepperoni pie, or switch things up with one of our specialty pizzas. Need to feed a bigger group? We also offer catering options for classrooms, offices, and events—just call ahead, and we’ll take care of the rest! Order online, call ahead for pickup, or stop by Spizzico to grab your Pi Day pizza pie! After all, Pi may go on forever, but good pizza never lasts long.
Pi Day may have started as a math holiday, but it’s turned into a celebration of learning, curiosity, and (most importantly) delicious food. Whether you’re diving into a pizza pie, solving math puzzles, or just enjoying the day with friends and family, March 14th is the perfect excuse to have some fun with numbers—and with great food.
So grab a slice, test your Pi knowledge, and celebrate the best circular food out there. Happy Pi Day!