Cubic Meter Calculator
Work out the volume in cubic metres (m³) of a box, room, trench or cylinder from its measurements — plus litres, cubic feet and cubic yards.
About this tool
Choose a box (rectangular) or cylinder shape, pick the unit you measured in — mm, cm, m, inches or feet — and enter the measurements. The calculator converts everything to metres and shows the volume in cubic metres, litres, cubic feet and cubic yards, with the formula used. Add a quantity to total several identical boxes, containers or holes. Useful for concrete, soil and gravel, moving boxes, storage, tanks and shipping.
Frequently asked questions
Convert all measurements to metres and multiply length × width × height. Example: a box 120 × 80 × 50 cm is 1.2 × 0.8 × 0.5 = 0.48 m³. If you multiply the centimetre values instead (480,000 cm³), divide by 1,000,000 to get m³.
Volume = π × radius² × height, where the radius is half the diameter. A round tank or post hole 60 cm across and 90 cm deep holds π × 0.3² × 0.9 ≈ 0.254 m³, or about 254 litres.
Exactly 1,000 litres. One litre is one cubic decimetre (10 × 10 × 10 cm), and a cubic metre holds 10 × 10 × 10 = 1,000 of them. So 0.48 m³ = 480 litres.
One foot is exactly 0.3048 m, so 1 ft³ = 0.0283168 m³ and 1 m³ ≈ 35.31 ft³. One yard is 0.9144 m, so 1 yd³ = 0.764555 m³ and 1 m³ ≈ 1.308 yd³. Bulk materials such as concrete and topsoil are sold by the m³ in most countries and by the cubic yard in the US.
Related tools
Gravel CalculatorCalculate how much gravel, crushed stone, sand or topsoil you need — by volume and weight.Concrete CalculatorWork out how much concrete you need for a slab, patio or footing — in m³, yd³ and premix bags.Volume ConverterConvert gallons to litres, litres to cubic metres, cubic feet, pints, quarts and more — US and UK units.Pool Volume CalculatorFind how many litres or gallons your swimming pool holds — rectangular, round or oval.Volume CalculatorCalculate the volume and surface area of a sphere, hemisphere, cone, truncated cone or pyramid — in cubic units and litres.Topsoil CalculatorWork out how much topsoil you need for a lawn, border or raised beds, in m³ or cubic yards and bags.