Saturday is Pi Day, a national celebration of the mathematical concept, which is the ratio of a circle's circumference to its ...

Divide any circle’s circumference by its diameter and you get pi. But what, exactly, are its digits? Measuring physical ...

Uncover the surprising connection between Ramanujan's pi formulas and the universe. Learn how his century-old math helps explain turbulence, black holes, and more.

Celebrate Pi Day and read all about how this number pops up across math and science on our special Pi Day page. Grab something circular, like a cup, measure the distance around the circle, and divide ...

Yesterday marked the confluence of round baked goods (sweet and savory), iconic slapstick, the Greek alphabet and the best known and most widely mystifying mathematical constant: “Pi Day.” ...

Pi Day 2026 is celebrated on March 14 to honour the mathematical constant π (3.14). Learn its history, significance, world ...

Missed Pi Day? Discover why understanding maths and Pi still shapes modern life, from Einstein’s legacy to everyday ...