Geometry Calculator

Calculate area, perimeter, volume, and other geometric properties

Geometry Formulas

Rectangle:

  • • Area = length × width
  • • Perimeter = 2(length + width)
  • • Diagonal = √(length² + width²)

Circle:

  • • Area = π × radius²
  • • Circumference = 2π × radius
  • • Diameter = 2 × radius

Triangle:

  • • Area = ½ × base × height
  • • Perimeter = side1 + side2 + side3

3D Shape Formulas

Sphere:

  • • Volume = (4/3)π × radius³
  • • Surface Area = 4π × radius²

Cylinder:

  • • Volume = π × radius² × height
  • • Surface Area = 2π × radius × (radius + height)

Cube:

  • • Volume = side³
  • • Surface Area = 6 × side²
  • • Diagonal = side × √3