Surface Area Calculator
Calculate surface area for cubes, prisms, spheres, cylinders, cones, and pyramids.
Surface Area Result
About the Surface Area Calculator
What is Surface Area?
Surface area is the total area of all faces or surfaces of a three-dimensional object. It is measured in square units and is important in geometry, physics, and engineering.
How to Use
Select a shape, enter the required dimensions, and click Calculate. The tool returns total surface area, lateral area, base area, and the formula used.
What is lateral area?
Lateral area is the area of all surfaces excluding the base(s). For example, the lateral area of a cylinder is the area of the curved side only.
Can I use different units?
Yes. Enter dimensions in any consistent unit (cm, inches, meters). The surface area will be in the square of that unit.
What is slant height for a pyramid?
Slant height is the distance from the apex of the pyramid to the midpoint of one of the base edges, measured along the face of the pyramid.
Is this calculator free?
Yes, BestCalc's surface area calculator is completely free with no ads or registration required.