What does the Surface Area Calculator work out?

Surface area of common 3D shapes. It is one of the Math tools on Mondo Knows.

How is the Surface Area Calculator calculated?

You get an instant answer with the working shown underneath.

Do I need to sign up, and is my data stored?

No sign-up, and nothing you type is sent anywhere. The calculation runs in your own browser, so the figures stay on your device and the page works offline once loaded.

Mondo Knows Tools

Surface Area Calculator

Surface area of common 3D shapes. Use the free surface area calculator below to get an instant answer, with the formula shown so you can check the maths and trust the result. Free, private, and no sign-up.

Shape

Radius / side

Mondo says

Surface area

113.0973

ShapeSphere

Surface Area Calculator: common questions

What does the Surface Area Calculator work out?: Surface area of common 3D shapes. It is one of the Math tools on Mondo Knows.
How is the Surface Area Calculator calculated?: You get an instant answer with the working shown underneath.
Do I need to sign up, and is my data stored?: No sign-up, and nothing you type is sent anywhere. The calculation runs in your own browser, so the figures stay on your device and the page works offline once loaded.

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Estimates for general guidance only. This is not financial, medical or legal advice. Everything runs in your browser and nothing you type is stored.