Surface Area Calculator

Calculate the surface area of cubes, prisms, cylinders, cones, spheres, pyramids, frustums, ellipsoids, torus, capsules and more. Choose a shape and enter its dimensions to see the 3D diagram and result instantly.

What is Surface Area?

Surface area is the total area of all external faces of a 3D solid. It is measured in square units and varies by shape.

Where Surface Area is Used

  • 3D modeling & CAD design
  • Material estimation (paint, wrapping, coating)
  • Manufacturing and engineering
  • Geometry & mathematics education

Important Notes

  • Some shapes (ellipsoids, oblate/prolate forms) require approximation formulas.
  • All calculations update instantly as you change inputs.

Frequently Asked Questions

Because there is no exact elementary formula for ellipsoid surface area.
No. Output is number-only, so you may interpret it as square units.