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In 1684 days until Pi Day 2031!

Pi Day 2031 falls on March 14, 2031. Use the countdown to plan your celebration — history, traditions, fun facts and emoji stickers below.

2030203120322033
1684
days to go

📖 Read the full Pi Day guide →

🥧 About Pi Day

A fun celebration of the mathematical constant pi, marked on 3/14 because pi is 3.14. Celebrated in world.

🔗 More observances to look forward to

April Fools' DayStar Wars DayInternational Kissing DayWorld Emoji DayInternational Lefthanders DayInternational Dog Day