Surface Area Calculator
Calculate the surface area of a box, sphere or cylinder.
Result
Results are estimates for general information only and are not professional advice.
Surface area formulas
Surface area is the total area of the outside of a 3D shape. A box is 2(lw + lh + wh), a sphere is 4πr², and a cylinder is 2πr² + 2πrh. Choose a shape and enter the dimensions.
Frequently Asked Questions
What is the Surface Area Calculator?
Calculate the surface area of a box, sphere or cylinder. It runs instantly in your browser and is completely free to use.
What do I need to enter to use the Surface Area Calculator?
The Surface Area Calculator asks for the following values (4): Shape, Length / Radius, Width / Height, Height (box). Fill them in and the result appears immediately — the calculation runs on your own device, so nothing you type is sent to a server.
How accurate is the Surface Area Calculator?
The Surface Area Calculator uses standard, widely-accepted formulas, so its figures are reliable estimates for everyday planning. They are not a substitute for advice from a qualified professional.
Is the Surface Area Calculator free, and do I need an account?
Yes. The Surface Area Calculator — and every other calculator on Calculatis — is completely free, with no registration, no download and no limit on how often you use it.