Pi Day is Thursday, March 14th!

 Pi Day is Thursday, March 14!

March 14 is an important date for math and science.

• Albert Einstein's birthday is March 14, 1879!
• It is the fourteenth day of the third month and can be written as 3.14 which are the first three digits of Pi!

What is Pi?

Pi has been represented with the symbol π for more than 250 years. Pi represents the ratio of the circumference of a circle to its diameter. 

An Irrational Number

This ratio, or pi π, is an irrational number, which means it has no end when written as a decimal number. It goes on and on and on and on.

Fun Fact 

The most decimal places of Pi memorised is 70,000, and was achieved by Rajveer Meena (India) at the VIT University, Vellore, India on 21 March 2015. Rajveer wore a blindfold throughout the entire recall, which took nearly 10 hours.  (Guinness World Records)

Pie Day

Lots of people celebrate Pi Day by making and eating pies! Yum! (Note: if you get the message Video is Unavailable, simply refresh and it will play.) Click 👇

Sir Cumference and the Dragon of Pi

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More Facts and Activities

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Happy Pi Day!