30 Best Pi Day Jokes to Help You Celebrate on March 14
Like pi, we could go on forever with this silly math humor.
If you haven’t celebrated Pi Day yet, what are you waiting for? This unofficial holiday rolls around every March 14 — that’s 3/14, matching the rounded number of pi. In case you need a refresher, pi is the mathematical constant representing the ratio of a circle’s circumference to its diameter. It’s an irrational number that starts with 3.14159 and continues infinitely.
You don’t have to be a math whiz to enjoy the occasion! Use the day as an excuse to share some lighthearted math humor — whether with friends, family or students in the classroom. Our collection of Pi Day jokes has something for all ages, guaranteed to get some laughs.
- Try this one: What’s wrong with the equation pi r square? Well, pi are round, cake are square — of course!
- Or how about this: What do you call it when someone gets a giant tattoo of pi on their face? An irrational decision!
All those jokes making you hungry? It’s Pi Day, after all! Celebrate by baking a homemade pie (it’s a homonym — get it?), or pick up a delicious treat from your local bakery to share. And if you’re in the mood for more year-round jokes and giggles, check out our roundups of knock-knock jokes and corny jokes for endless laughs.
How many bakers does it take to bake a pi?
3.14.
Why should you never trust someone writing on graph paper?
Because they must be plotting something.
What's the math teacher's favorite dessert?
Pi.
Why should you never start talking to pi at a party?
Because it just goes on forever.
What was Sir Isaac Newton’s favorite dessert?
Apple pi.
Why is pi so lucky in love?
Because its love is infinite and non-repeating.
What’s wrong with the equation 'pi r squared?'
Pi are round. Cake are square.
What did the students say about their Euclidean geometry test?
It was easy as pi.
What did pi say when someone asked if it could explain what Pi Day was again?
"I don't want to repeat myself."
Did you know?
That 3.14% of sailors are Pi-rates?
What do you call it when someone gets a huge tattoo of pi on their face?
An irrational decision.
What did pi say to its sweetheart?
You look radian today.
What do you get when you divide a jack-o-lantern by its diameter?
Pumpkin pi.
Why shouldn’t you eat too much pi?
You’ll end up with a big circumference.
What do you get when a bunch of sheep stand around in a circle?
Shepherd's pi.
What is a mathematician’s favorite snake?
A pi-thon.
Why did two fours skip dinner?
Because they already 8.
What do you get when you take the sun and divide its circumference by its diameter?
Pi in the sky.
What did pi say in a spat with its spouse?
You’re being irrational.
Why did pi fail its driving test?
Because it didn’t know when to stop.
Alesandra is a digital travel and lifestyle journalist based in Los Angeles. Her work has appeared in Good Housekeeping, Woman’s Day, Prevention, Insider, Glamour, Shondaland, AFAR, Parents, TODAY, and countless other online and print outlets. Alesandra has a masters degree in journalism with an emphasis on cultural reporting and criticism from NYU, and a bachelor’s degree from UC Berkeley. An avid traveler, she trots the globe with her husband and their twins.
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