Engineering & Construction
Area & Volume Calculator
Calculate the area or volume of common shapes in millimetres, centimetres, metres, inches or feet. The formula used for the result is shown beside it.
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This runs entirely in your browser. Nothing you type is sent to a server.
How to calculate area or volume
- 1Choose area or volume, then the shape.
- 2Enter the dimensions in one unit. All inputs on the page use that unit.
- 3Read the result in that unit and the equivalent in metres.
Questions
Which formulas are used?
The standard ones: rectangle width × height, circle πr², trapezoid (a + b) / 2 × height, cylinder πr²h, sphere 4/3 πr³, and cone πr²h / 3. The page shows the formula next to the result.
Can I mix units?
No. Convert first, or use the unit converter. Mixing millimetres and metres is the usual source of a result that is off by a thousand.