Pi (π) Calculator

Calculate circumference and area using Pi.

Formula

π ≈ 3.14159265358979; C = 2πr; A = πr²
  • π ≈ 3.14159265358979; C = 2πr; A = πr²

Pi (π) Calculator

Pi (π) Calculator calculation.

Frequently asked questions

How is Pi (π) Calculator calculated?
π ≈ 3.14159265358979; C = 2πr; A = πr²