Pi Day 2026
📅 Saturday, March 14, 2026
📝 About Pi Day 2026
Celebrated on March 14 (3/14 in the American month-day format, matching pi's first three digits), Pi Day was founded in 1988 by physicist Larry Shaw at San Francisco's Exploratorium, where staff marched in a circular parade and ate fruit pies. The U.S. House of Representatives officially recognized the day in 2009. Pi — the ratio of a circle's circumference to its diameter — has been calculated to over 100 trillion decimal places, though only about 40 digits are needed to compute the circumference of the observable universe to the accuracy of a single atom. The day also coincides with Albert Einstein's birthday (1879), adding another layer of mathematical celebration. Schools worldwide hold pi-recitation contests and pie-baking competitions.
📋 Quick Facts
- Date
- Saturday, March 14, 2026
- Day of the Week
- Saturday
- Days Remaining
- 0
- Category
- Fun Days
❓ Frequently Asked Questions
There are 0 days until Pi Day 2026 on Saturday, March 14, 2026.
Pi Day 2026 is on Saturday, March 14, 2026.
Celebrated on March 14 (3/14 in the American month-day format, matching pi's first three digits), Pi Day was founded in 1988 by physicist Larry Shaw at San Francisco's Exploratorium, where staff marched in a circular parade and ate fruit pies. The U.S. House of Representatives officially recognized the day in 2009. Pi — the ratio of a circle's circumference to its diameter — has been calculated to over 100 trillion decimal places, though only about 40 digits are needed to compute the circumference of the observable universe to the accuracy of a single atom. The day also coincides with Albert Einstein's birthday (1879), adding another layer of mathematical celebration. Schools worldwide hold pi-recitation contests and pie-baking competitions.
Pi Day 2026 falls on a Saturday.