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Celebrating Pi Day 3.14: How to Throw A Great Pi Party

Math is everywhere and it is everything. Numbers make up everything. I LOVE math and I LOVE pi.


Celebrate Pi Day - March 14th

Mmmm. Pi Day! The nerdy holiday celebrated by math geeks worldwide. This is the day we gather around to celebrate that amazing little (long) number, pi.

Pi, approximately 3.14159, is the mysterious mathematical constant (number) that represents the ratio of any circle's circumference to its diameter.

Pi has its day, appropriately, on March 14 (3/14). Often a Pi Day celebration will have an extra special event set for pi minute (at 1:59pm). In the UK, Pi Approximation Day is often celebrated on July 22 (22/7) as 22 divided by 7 is an approximation for pi.

This day brings more fun to math classes around the world then anything else (second only to Math League). I wish you a very Happy Pi Day 2019!

Videos From Pi Day - Pi Day Videos From Last Year

This sand art video in particular is absolutely AMAZING! At your pi party, have a TV or project showing Pi videos like this one. - Pi Day Official Website

  • Pi Day - The official web site for Pi Day, March 14th is the official web site for March 14th (3.14). Learn about pi, shop for pi t-shirts, share ideas about how to celebrate pi & pi day, enjoy pi-related multimedia, get one million digits of pi, and send pi day eCards. 3.14159265358979323

How Much Pi Do You Know?

Door Prize!

At your Pi Day Party check your guests birthdays on Pi Search. The birthday starting closest to the beginning of pi wins!

Door Prize Ideas:

  • A pi t-shirt or pair of novelty Pi socks (because you don't know the winner's size, socks are a good choice)
  • Pi by Givenchy cologne
  • A framed print of Pi
  • The DVD of Pi the 1998 movie, The Life of Pi, or Magnum P.I. (with a pi symbol over P.I.)

Fun Ways to Estimate Pi - Quirky Pi Approximation Methods

Send a Free Pi Day eCard - Free Electronic Pi Day Greeting Cards

About Pi Day

The mathematical constant pi is such an amazing number that it certainly deserves a day of it's own. Pi Day is observed on March 14 each year as the calendar date is 3/14 (in America at least). Special Pi Day celebrations and proclamations are made at exactly 1:59:26 PM which is Pi Second (which falls during Pi Minute!).

Pi Approximation Day is another pi holiday. Pi Approximation Day is usually celebrated on July 22. 22/7 is a rough approximation for pi (and in the European date format that is July 22).

Pi can also be celebrated on the 314th day of the year, which is usually November 10th, but November 9th in leap years.

Hold "Storytime" During Your Party

Sir Cumference and the Dragon of Pi: The mathematical fairy tale.

Scroll to Continue

Pi Day Activities

Liven up your Pi Day with one of these great activities.

Lose Yourself in the Digits - Pi Day Song

Sing Pi Day Songs


Happy Pi Day (to tune "Happy Birthday")

(Sing this one in honor of Albert Einstein, whose birthday is also March 14!)

TOP: This is great for the cutting of the Pi Pie.

Happy Pi Day to you,
Happy Pi Day to you,
Happy Pi Day, Three Point One Four.
Happy Pi Day to you

We Wish You a Happy Pi Day (to tune "We Wish You a Merry Christmas")

We wish you a happy Pi Day
We wish you a happy Pi Day
We wish you a happy Pi Day
Because math is fun
Pi digits for you
We cannot ignore
Pi digits never ending
Start with three point one four!

More Pi Day Songs

Decorate for Pi Day

What to Eat at a Pi Day Party? - Pi Day Foods and Snacks

  • Pie!

    Any pie will do, but if you can put the symbol pi into the crust of say an apple or cherry pi it is even more festive. Get can even buy a pie pan shaped like pi !!! Having people over for dinner? Chicken Pot PI !

  • Pizza!

    A pizza pie is a great add to a Pi Day party. To go all out, put pepperoni on in the shape of pi.

  • Coffee, pie and donuts

    A mnemonic for C = pi*d is Coffee Pie Donuts

  • Cookies or cupcakes decorated with Pi are great ideas.
  • Anything else round - it would be best to have all of your refreshments be round to keep the theme going : donuts, cheerios, M&Ms, ...

More Pi Day Activity Ideas - Things to Do for Pi Day

Here are a few Pi Day activities to make it a great day:

  • Make a paper chain out of 10 different colored papers. Choose one color to correspond with each digit, and see how long you can make it.
  • Pi Rhythm - Assign each of 10 students a digit. Have the digits of pi visible to everyone. Have students pat there legs in a steady rhythm. Have the students call out their digit when it comes up in the rhythm. Whenever a student messes up, they get "dinged". The person with the least "dings" after a set amount of time wins.
  • Compose pi nursery rhymes.
  • Hold a Pi Day Run - Plan a 3.14 mile run. Perhaps you could make it a fundraiser.

Pi Art

Have a decorating contest, where everyone decorates a Pi symbol. Let them know that you want more than just simply coloring it, you want it completely decorated, after all, it's Pi Day, and Pi deserves it.

Pi Quotes

  • "Love is like pi - natural, irrational, and very important." -- Lisa Hoffman
  • "Programming graphics in X is like finding the square root of PI using Roman numerals" --Henry Spencer
  • "So here we have pi squared, which an engineer would call 10." --Frank King
  • "It helps us understand what pi is, not just food." --Robert Toth
  • "Pi is not merely the ubiquitous factor in high school geometry problems; it is stitched across the whole tapestry of mathematics, not just geometry's little corner of it. Pi occupies a key place in trigonometry too. It is intimately related to e, and to imaginary numbers. Pi even shows up in the mathematics of probability." --Robert Kanigel
  • "Exploring pi is like exploring the universe" -David Chudnovsky
  • "Pi is not just a collection of random digits. Pi is a journey; an experience; unless you try to see the natural poetry that exists in pi, you will find it very difficult to learn" --Antranig Basman

400 Digits of Pi

These are the first 400 digits of pi. If you need more, the first 10,000 are listed here.







About Pi

Learn a little more about this mystical number:

Celebrate Pi in English Class

Pi Day Beyond Math Class

Can't figure out how to celebrate Pi in your English class? How about writing a story where the number of letters in each consecutive word make up pi? You know...first word 3 letters long, second word 1 letter, third word four letters, ...

For example:


Him, I love. I exist, amazingly. So absent bliss. All alone. ...

Another great idea is to write your own Pi-ku math poem. Who wouldn't love a Pi Haiku?

Hold a Debate: Which is cooler? - The Pi or e Debate

The age old debate. Which is cooler pi or e?

At your Pi Day Party, hold a mathematical debate. Assign a person to speak for pi and another to speak for e.

(It's Pi Day, not e-Day, so of course, no matter how the debate goes, Pi will win. TODAY Pi is cooler, hands down.)

Why pi is cooler than e: - Debate points for pi

  • the value of pi is bigger
  • pi is so special, it only shows under "special symbols" in word processor programs.
  • People confuse Euler's Number (e) with Euler's Constant (gamma). There is no confusion with the one and only pi
  • e is named after a person, but pi stands for itself
  • pi cannot be confused with a hallucinogenic drug
  • pi is tasty
  • Pi Day rocks! No one cares about e Day.

Why e is cooler than pi: - Debate points for e

  • e is easier to spell than pi
  • e is on a keyboard, but pi is not
  • ln(pi) is an ugly, but ln(e) is 1.
  • e is used in calculus while pi is used in baby geometry
  • 'e' is the most commonly picked vowel in Wheel of Fortune.
  • You don't need to know Greek to be able to use e
  • You can't confuse e with a dessert

Pi Jokes

Mathematician: Pi r squared

Baker: No! Pie are round, cake cornbread are square!


A mathematician, a physicist, and an engineer are all given identical rubber balls and told to find the volume. They are given anything they want to measure it, and have all the time they need. The mathematician pulls out a measuring tape and records the circumference. He then divides by two times pi to get the radius, cubes that, multiplies by pi again, and then multiplies by four-thirds and thereby calculates the volume. The physicist gets a bucket of water, places 1.00000 gallons of water in the bucket, drops in the ball, and measures the displacement to six significant figures. And the engineer? He writes down the serial number of the ball, and looks it up.


In Alaska, where it gets very cold, pi is only 3.00. As you know, everything shrinks in the cold. They call it Eskimo pi.


What do you get if you divide the circumference of a jack-o-lantern by its diameter?

Pumpkin pi.


What do you get when you take the moon and divide its circumference by its diameter? Pi in the sky.


What do you get if you divide the circumference of a bowl of ice cream by its diameter?

Pi a'la mode.

Celebrate Pi Day By Doing What You Love - But Pi Oriented

What's great about Pi Day, is that you can celebrate it doing whatever it is that you love doing. Everyone can make an amazing Pi Day project!

  • If you love music, play Pi on a piano or instrument of your choice.
  • If you love photography, take your camera to the streets and photograph numbers on buildings and signs in your town and then line them up to Pi. Take single digits, and also try to get some photos of strings of numbers. Then create a display of your photos. Check out this great example: Pi Day to the 36th digit.
  • If you love sports, find photos of athletes wearing their numbered jersey's and line them up to represent Pi. Babe Ruth wore #3. That's a great place to start. Then choose an athlete that wore 1 or 14 and continue for the first however many digits of pi you wish to display.
  • If you like making movies, create a stop action animation using anything...sand, legos, pencils, soda cans, people, anything.
  • If you like acting, write a Pi Day skit and perform it.
  • If you like writing, write a Pi poem, or create a false newspaper that includes fake Pi related stories (complete with ads, classifieds, and obituaries).
  • If you like cooking, bake a Pi Pie. Another food idea is to use a serving dish shaped like a cylinder, half sphere, or even a cone, and prepare something in it, and display the calculations for the volume of that item. For instance, if you make a trifle in a trifle bowl (which is nearly a cylinder), you can calculate volume with this equation.
Funny Pi guy clipart

Funny Pi guy clipart

The Punny Pi Guy

At your Pi Day event, interview a guy with pi symbols stuck all over him. Have all of his answers be pi related - heavy on the puns. It's best when the interviewer gets annoyed at the puns and tries to come up with harder questions (to which Punny Pi Guys always has an answer for).

For example:

Q. What's your favorite food?

A. Pie.

Q. Other than pie.

A. Pizza pie.

Q. Other than pizza pie.

A. Paella?

Q. What's you favorite story?

A. Peter Piper

Q. What do you want to be when you grow up?

A. A Pilot.

Q. Your favorite movie?

A. Pirates of the Caribbean

Al G. Bra's Pi Day Video Collection

This guy truly loves Pi Day, and it shows! If only the whole world had his enthusiasm for math...

Pi 3.14 in the Bible

Pi 3.14 in the Bible

Pi In The Bible

Is Pi in the Bible? Well, yes, sort of.

In the description of Solomon's Palace, specifically in the verse I Kings 7:23, the Bible gives the dimensions of a round "molten sea", which is an immense round basin of cast metal. Since it gives enough dimensions, we can work backwards to calculate pi. The Bible says the following:

And he made a molten sea, ten cubits from the one brim to the other: it was round all about, and his height was five cubits: and a line of thirty cubits did compass it about. (KJV)

The problem that arises is that if you do the math on those figures then pi equals 3, but we know this is not accurate. I believe that since the Bible is not a science book, or a math book, that this error is simply stems from the writer rounding to the nearest cubit.

Visit this site for more information on Pi In The Bible.

Pi Drinks

Frozen H2O Shaped Like Your Favorite Irrational Number

When hosting the Pi Day soiree at your geek bachelor pad you'll need the proper equipment to ensure success. Square ice cubes just will not do. Round out your party with ice shaped like pi amazon.

Also check out the ultimate in Pi Day cocktails...the Pi-Tini.

Here you can wish everyone a Happy Pi Day, share your Pi Day stories and ideas, and ask any Pi questions.

Pi Day Guestbook

thegembank on March 28, 2014:

you throw every aspect of pi here.. even punny pi joke.

anonymous on August 23, 2013:

Coming soon... 3.14... the movie Check us out on imdb.

seodress on July 26, 2013:

Super cool lens !

shana273 on July 23, 2013:

Wow! I love the Pi T-shirts.

Socialpro54 LM on March 28, 2013:

Great lens!

Judith Nazarewicz from Victoria, British Columbia, Canada on March 20, 2013:

What a great lens! Celebrating Pi Day is so unique. I would have never known about Pi if wouldn't have stumbled on your lens. I love it! :-)

PinkstonePictures from Miami Beach, FL on March 19, 2013:

I love the fact you can celebrate Pi Day with a Pie :-) Great lens and very interesting read. I'll probably return as there was a lot of interesting info here and I've read it quite late and must really go to bed :-D

Tony Bonura from Tickfaw, Louisiana on March 14, 2013:

I celebrated Pi Day with Pizza.


DAEdmonston on March 14, 2013:

I really liked the Pi T-shirts and the Sir Cumference and the Dragon of Pi book! Thanks for putting it all together!

James Jordan from Burbank, CA on March 14, 2013:

I love the movie Pi & Life of Pi.

hovirag on March 14, 2013:

@vetochemicals: pie is a good option :)

miaponzo on March 14, 2013:

Wheeeeeee .. happy Pi Day!!!!!

anonymous on March 14, 2013:

What a wonderful lens!

victoria91 lm on March 14, 2013:

Great lens. It is very informative.

sean2099 on March 14, 2013:

Nice lens, really went all out on Pi.

Laura Hofman from Naperville, IL on March 14, 2013:

Cool lens! I learned a lot. Feel like celebrating your ideas!

ikrave on March 14, 2013:

Really fun and informative lens...Happy Pi Day!!!

Cindy from Pittsburgh Pa on March 14, 2013:

Happy Pi Day Kab and thanks for the lesson. All I know is today I'll be eating Pie:) xoxo

Kerri Bee (author) from Upstate, NY on March 14, 2013:

@CuriousBoy: That's pretty sexy.

I love Euler's identity. I love everything about him.

LeenaBK LM on March 14, 2013:

Wow....that was a lot of fun and interesting information about Pi and the Pi Day....Happy Pi day to you Kab.

floppypoppygift1 on March 14, 2013:

This is a tremendously fun lens that mathematicians and the math challenged can both enjoy! Cheers~cb

Kim from Yonkers, NY on March 14, 2013:

Wow there's a lot on here. I think I'll be spending PI day reading the page. & love the fun ways to measure Pi

Bonfire Designs on March 14, 2013:

Math and irrational numbers are all Pi in the sky to me, but always makes sense when I need them to bake a pie! Happy Pi day to all.

CuriousBoy on March 14, 2013:


worldflashpacker on March 14, 2013:

I feel ready to help my kids with their maths homework now.

Paladins on March 14, 2013:

Excellent, funny, clever lens. Now, go eat some Pi! :-)

Stephen J Parkin from Pine Grove, Nova Scotia, Canada on March 14, 2013:

What a fun Pi lens it is a strange number that never resolves! Wonder if that has anything to do with infinity and the mystery of creation, odd that Pi day fell the day after the new Pope was selected. Wonder if he's into Math too? Odd what it makes you think about. Blessed!

Lou Martin from Atlanta, Georgia on March 14, 2013:

Happy Pi Day Kab!

blackbeltreader on March 14, 2013:

Nice lense!

anonymous on March 14, 2013:

nice lens

Evelyn Saenz from Royalton on March 12, 2013:

Happy Pi Day! :)

Silwen LM on March 11, 2013:

Nice. I loved that joke about mathematician, physicist and engineer. There is so much true in the joke. Happy Pi day!

Kerri Bee (author) from Upstate, NY on March 04, 2013:

@birthdaybluepri: I love it! Sounds like a fun party.

birthdaybluepri on March 04, 2013:

How about celebrating a Pi birthday? Just went to a friend's 31.419th birthday party. Great Lens.

Kerri Bee (author) from Upstate, NY on March 02, 2013:

@anonymous: Ha Ha!

anonymous on March 02, 2013:

Why is "pi" Buzz Lightyear's favorite food?

Because it goes "To Infinity and beyond"!

Why wouldn't the circle go out with the quadrilateral?

She was afraid he would be a square!

kulla on February 26, 2013:

Highly interesting and fun lens.

blackbeltreader on February 16, 2013:

What fun! Thanks!

willybinns lm on August 21, 2012:

I love PI day in school. I always organize a week long celebration for my students!

Rose Jones on August 14, 2012:

Back to look at this fun and thorough lens. I just offered it up as an example of a lens about math - in the Squidoo forum game. This is the first lens that came to mind.

cmadden on July 12, 2012:


physics-boy lm on April 06, 2012:

Amazing lens, really enjoyed it!

Deadicated LM on April 01, 2012:

I made a Pizza Pi in celebration of Pi Day :)

I001l01I02l on March 29, 2012:

i didn't know there was pi day!(: cool

alex89 lm on March 27, 2012:

nice. I celebrate pie day faithfully every year.

neuromancer lm on March 27, 2012:

Haha I never thought about 14.3. as Pi day :)

brynimagire on March 27, 2012:

Nice article . Fantastic lens !

hftm69 on March 26, 2012:

Nice, pi have huge influence in math world.

VinceErrichiello on March 25, 2012:

As an absolute math geek, I love this article! Keep them coming!

iamtreehugger on March 24, 2012:

Great contents!

anonymous on March 22, 2012:

great lens


Rose Jones on March 22, 2012:

Wonderful lens, I spent or misspent a great deal of my morning here, watching the videos and looking at the merchandise. It blows my mind that Einstein's birthday is the same as pi day. I am going to send this to my ex-husband: a mechanical engineering professor. That man needs a good laugh. Angel Blessed.

Michey LM on March 22, 2012:

Just come back to spread Angel dust on your way


Michey LM on March 22, 2012:

"Pi" is useful in engenering calculations, astrology, is also a symbol, a logo sometime, or represent our respect for old science..

missyjanette on March 18, 2012:

great lens for mathematicians!

midnightfocus1 on March 17, 2012:

very nice and interesting lens

Minoly on March 15, 2012:

Ha-pi day. Interesting stuff there thx for sharing

anonymous on March 15, 2012:

Pi is 34 sqrt from 8*10^16 also e^3+psi^3+Pi^3+pti^3=(e+psi+Pi+pti)^2

e is 120 g Pi is 180 g

anonymous on March 15, 2012:

Pi is 34 sqrt from 8*10^16 also e^3+psi^3+Pi^3+pti^3=(e+psi+Pi+pti)^2

e is 120 g Pi is 180 g she is perpendicular

(2.187628058+i)^2=3.78571652+4.375256116i or e(or Pi)/0.718036285

addpeople on March 15, 2012:

Great page!

Gayle Dowell from Kansas on March 14, 2012:

Great lens, I think I've learned something today!

Elyn MacInnis from Shanghai, China on March 14, 2012:

Happy Pi Day! I was so happy to see that Albert Einstein's birthday was 3.14. How incredible is that? Thanks for the information. Your lens is so fun.

KimGiancaterino on March 14, 2012:

Happy Pi Day ... #1 in Education. That's cause for a celebration! Love the Gene Simmons reference.

SteveKaye on March 14, 2012:

I heard that a group of state politicians tried to pass a law requiring that pi = 3.

mrducksmrnot on March 14, 2012:

Happy pi day and remember this is a leap year.

caketech on March 14, 2012:

Cool holiday! I wonder if we have any pi day specials where I live? :)

luvmyludwig lm on March 14, 2012:

happy pi day. we had $3.14 pizzas at Your Pie to celebrate...great special for today. :)

mediawizard lm on March 14, 2012:

Happy Pi day and yes happy payday on Squidoo!

Rob Hemphill from Ireland on March 14, 2012:

Such a cool lens, and really interesting - Happy Pi Day!

Lauriej1 on March 14, 2012:

Great lens! Happy pi day!

anonymous on March 14, 2012:

This Squidoo Angel wishes everyone a very Happy Pi Day!

Kim from Yonkers, NY on March 14, 2012:

Cool & interesting lens, I've added it to the holiday section of my favorite lenses lens

kathysart on March 14, 2012:

Wow how INVENTIVE this lens is!! Blessed

miaponzo on March 14, 2012:

Wow! I love pi :) hehehe Blessed!

anonymous on March 14, 2012:

make a pi flower

anonymous on March 14, 2012:

Happy Pi day to everyone! Excellent lens!

Kerri Bee (author) from Upstate, NY on March 14, 2012:

@RCGraphicsDesign: You don't have to....but you'll want to!

RCGraphicsDesign on March 14, 2012:

Really impressive. Do you have to exchange presents for Pi Day? :-) Great lens.

mommafox on March 14, 2012:

Happy Pi Day! I'll be singing those tunes all day and celebrating with PIE!

Camden1 on March 14, 2012:

I thought yesterday was Pi day, so I sent the kids little pies in their lunches and was all ready to bake a pie for dessert when my son pointed out that yesterday was actually the 13th. So it's apple pie for dessert tonight!

duslan on March 14, 2012:

Nice lens. For the first time in my life, I am wishing I was a middle school teacher so I could share all of this cool pi stuff with my students!

BestRatedStuff on March 14, 2012:

Great lens. I've never heard for P day before. This lens was worth of reading!

ferginarg lm on March 14, 2012:

Pi ice cubes, and I thought I'd seen everything! haha, Happy Pi day, I might just go and eat some, a savory one though none of that sweet pie my dear North Americans eat haha.

lensesbyjames on March 14, 2012:

This is a great lens and took a lot of thought and it really works.

7thStone on March 14, 2012:

Excellent lens ... but for the voting you needed one more option "No, but I will now" :)

Deb Bryan from Chico California on March 14, 2012:

Happy Pi Day! Thanks for such a great page with everything I ever wanted to know about Pi ;-)

Mahadihbk on March 14, 2012:

Great lens. Feeling happy to wish everyone a Happy Pi Day through this lens

anonymous on March 14, 2012:

I've never heard for P day before.

Ram Ramakrishnan on March 14, 2012:

Inherently a very nice guy,

he must be, this enigmatic Pi;

Never get to know him fully,

even if you earnestly try.

Simple enough for a child to use,

Yet could pick Einsteinâs brain.

Moves about with ease, does he,

Sporting his endless digit-train.

zvous on March 13, 2012:

Pi Day!!!!!

anonymous on March 13, 2012:

Another Pi Day song:

Chuck Nelson from California on March 13, 2012:

Where have I been all these years? I've never been invited to a pi party and I don't own a pi tie. Interesting and well done!

JJNW from USA on March 12, 2012:

It's almost here! It's almost here! YAY for Pi Day! (must go plan party!!!)

anonymous on March 12, 2012:

Sweet lens. Totally liked it. And I learned a lot from it. Just think about people in the past having Pi defined as "3" or "4" for the sake of laziness :-)

anonymous on March 11, 2012:

This lens was worth of reading! Well done ;)

Arc4life on March 11, 2012:

Cool Lens....

MGuberti on March 02, 2012:

Pi Day is near!

goo2eyes lm on March 02, 2012:

blessings for the mathematical geniuses.

MegapixelIdeas on March 02, 2012:

Wow, I never knew that there was so much to pi day!

Jules Corriere from Jonesborough TN on March 02, 2012:

Excellent Lens! My cousins are planning a Pi Day party, and are collecting lots of "pie" recipes. Thanks for a great read. Blessed.

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