Surface Area Calculator
Compute the surface area of a sphere, cube, cylinder, cone or rectangular prism.
Input Data
Results
314.1593
sphere surface area
At a glance:Surface area is the total area of all outer faces of a solid. Each shape has its own formula: sphere 4πr²; cube 6a²; cylinder 2πr(r+h); cone (with base) πr²+πr√(r²+h²); prism 2(lw+lh+wh).
Formula
Sphere: 4πr²
Cube: 6a²
Cylinder: 2πr(r+h)
Cone: πr²+πr√(r²+h²)
Prism: 2(lw+lh+wh)
How to Use
- Pick a shape.
- Enter its dimensions.
- Read the surface area.
FAQ
Does the cone include the base?
This tool gives the total surface area including the base; for lateral area only use πr√(r²+h²).
Must I fill all dimensions?
Only the ones your shape needs; the others are ignored.
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References
Content review: Calculatorism Science Team. Results are for reference only.