Surface Area Calculator

Calculate the surface area of common 3D shapes including cubes, spheres, cylinders, and cones.

Result

Fill in the fields above, then press Calculate.

A surface area calculator computes the total surface area and volume of common 3D shapes including cubes, spheres, cylinders, cones, and pyramids.

Select a 3D shape and enter its dimensions. The calculator will compute the total surface area and volume. For cones and pyramids, leave slant height as 0 to auto-calculate from height.

Examples

Cube

Side 5: SA = 6 × 25 = 150, Volume = 125

Sphere

Radius 3: SA = 4π(9) = 113.1, Volume = 4π(27)/3 = 113.1

Cylinder

r=2, h=10: SA = 2π(2)(2+10) = 150.8, Volume = π(4)(10) = 125.7

Frequently Asked Questions

What is surface area?
Surface area is the total area of all faces/surfaces of a 3D object. It is measured in square units.
What is slant height?
Slant height is the distance along the surface from the base to the apex. It differs from the vertical height and can be calculated using the Pythagorean theorem.
How is lateral area different from total surface area?
Lateral area includes only the sides (not bases). Total surface area includes the sides plus all base(s).
Related Calculators
Volume Calculator
Area Calculator
Circle Calculator
Triangle Calculator

Quick Tips

  • •Double-check your inputs — small errors lead to incorrect results.
  • •Use consistent units for all dimensions to get correct surface area units.
  • •Leave slant height as 0 for cones and pyramids to auto-calculate it from the height.