About Pi Day
Pi Day falls on March 14 — 3/14, the first three digits of π — and doubles as Albert Einstein's birthday. The countdown above ticks toward math's favorite holiday, celebrated with equal parts geometry and pie.
Launched at San Francisco's Exploratorium in 1988 and recognized by the US Congress in 2009, Pi Day means pie-eating, pi-digit recitation contests (the world record runs to 70,000 digits), classroom celebrations, and pizza deals everywhere. Peak observance hits at 1:59 PM — extending π to 3.14159.
Upcoming dates
| 2027 | Sunday, March 14, 2027next |
| 2028 | Tuesday, March 14, 2028 |
| 2029 | Wednesday, March 14, 2029 |
| 2030 | Thursday, March 14, 2030 |
| 2031 | Friday, March 14, 2031 |
FAQ
When is Pi Day?
March 14 (3/14) every year — with the "pi minute" at 1:59 PM.
Why March 14?
The US date format 3/14 matches π's first digits, 3.14. It is also Einstein's birthday.
How is Pi Day celebrated?
Eating pie, reciting π digits, math events and deals at pizza and bakery chains worldwide.