Home / Construction & Measurement / Volume Calculator 02 · A little clarity EXAMPLE RESULT
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How to use Choose the solid and a length unit. A is length, cube edge, or radius; B is prism width or round-solid height; C is prism height. Unused dimensions are ignored for the selected solid.
For related tasks, try the Pool Calculator .
Formula & how it works Prism = lwh; cube = s³; cylinder = πr²h; sphere = 4πr³/3; cone = πr²h/3. 1 m³ = 1,000 liters.
Length 3 ft Width 4 ft Height 5 ft Example inputs · Rectangular prism. Schematic, not to scale. Worked example Example 1 A 3 ft × 4 ft × 5 ft prism contains 60 ft³ = 2.2222 yd³ ≈ 1.6990 m³.
Assumptions & practical notes Round solids use radius, not diameter. For cylinders and cones, B is perpendicular height; C is unused.
Conversions use US liquid gallons, not Imperial gallons. A container’s internal dimensions determine usable capacity.
See our calculation methodology for unit definitions and testing practices.
Results are estimates for planning purposes. Verify measurements, product specifications, and applicable building codes before purchasing materials or starting work.
Frequently asked questions Does a cone have the same volume as a cylinder? With the same radius and height, its volume is one third of the cylinder’s.
Are surface area and volume interchangeable? No. Surface area uses square units; volume uses cubic units.
Related calculators Pool Calculator Find pool water volume in US gallons, liters or cubic units. Choose a rectangular, round or oval pool and enter actual water depths.
Open calculator → Cubic Yard Calculator Convert a rectangular bed, round bed, or known area and depth into cubic yards.
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Open calculator → Area Calculator Calculate the area of six geometric shapes with conversions to common square units.
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Updated 2026-09-22 
CalcCommons