Hemisphere Calculator
Calculate the volume and total surface area of a hemisphere from its radius.
- Curved surface area
- 157.0796
- Total surface area
- 235.6194
Formula: V = (2/3) × π × r³
About Hemisphere Calculator
Hemisphere Calculator is a free online calculator that gives you an instant, accurate result as you type. Calculate the volume and total surface area of a hemisphere from its radius.
The calculation uses the standard formula V = (2/3) × π × r³ and updates live with every change to the inputs. Everything runs client-side in your browser — fast, private, and free to use as often as you like.
The total surface of a solid hemisphere is 3πr²: the curved dome (2πr²) plus the flat circular base (πr²).
Frequently Asked Questions
Is Hemisphere Calculator free to use?
Yes. Hemisphere Calculator is completely free, with no sign-up, no downloads, and no usage limits. You can use it as many times as you like on any device with a web browser.
How accurate is this calculator?
The calculator applies the standard formula (V = (2/3) × π × r³) with full floating-point precision and rounds only the displayed result. For most practical purposes the results are exact.
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