Area Calculator
Area of any shape.
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Geometry
Volume Calculator
Find the volume of a box, cylinder, sphere, cone or cube.
Volume
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Cubic units.
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Enter your figures above to see the step-by-step working.
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How the Volume Calculator Works
Volume measures the space a three-dimensional solid holds, in cubic units. Choose a solid and this calculator asks only for the measurements it needs, then applies the standard formula: box (length×width×height), cube (a³), cylinder (πr²h), sphere (4⁄3πr³) and cone (⅓πr²h).
Keep every measurement in the same unit and the result is in that unit cubed — cubic inches, cubic feet, litres and so on. It’s handy for tanks, containers, shipping, concrete and science problems.
volume depends on solid — e.g. box = l×w×h, sphere = 4⁄3πr³
Frequently Asked Questions
How do you calculate volume?
By the shape of the solid: a box is length×width×height, a cylinder is π×radius²×height, and a sphere is four-thirds π times the radius cubed.
What units is volume in?
Cubic units of whatever you entered — cubic inches, cubic feet, cubic centimetres. 1 cubic foot is about 7.48 US gallons.
How do I find the volume of a tank?
Use the cylinder formula for a round tank (radius and height) or the box formula for a rectangular one, then convert cubic feet to gallons if needed.
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