Solid Geometry Calculators

Surface Area Calculator

Calculate the surface area of various 3D geometric shapes. Select a shape from the dropdown and enter the required dimensions.

Select shape and enter dimensions
Shape
Radius (r) units
Surface Area Formulas

Basic Shapes:

  • Sphere: $SA = 4πr²$
  • Cube: $SA = 6s²$
  • Hemisphere: $SA = 3πr²$

Complex Shapes:

  • Cylinder: $SA = 2πr(r + h)$
  • Cone: $SA = πr(r + l)$
  • Rectangular Prism: $SA = 2(lw + wh + lh)$

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