Square meters to cubic meters. Area and layer volume

Convert area and layer thickness to volume in cubic meters. Material, waste, mass and price options stay out of the basic workflow until opened.

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Square metres to cubic metres
Surface area for example, a room floor
Enter an area greater than zero.
Enter the surface area to be covered. For example, for a 40 m² floor screed, enter 40 and select m².
Layer thickness
Enter a thickness greater than zero.
Enter the layer thickness in the selected unit. For example, 5 cm = 0.05 m, so 40 m² × 5 cm = 2 m³.
Material presets
Quick material presets:
Material volume
—m³
The result is calculated using V = A × h, where A is the area in m² and h is the thickness in metres. The calculator also shows litres, cost, waste allowance and estimated weight.
Cost estimate
Cost estimate
$ / m³
Select $ / m³ when the supplier quotes a price per cubic metre. Select $ / m² when the material is sold by area.
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Waste allowance
A waste allowance covers cuts, offcuts and measurement errors. Typical starting points are about 10% for screed, 8% for boards, and 15–20% for sand or soil.
Material for weight estimate
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Material weight
Weight is calculated using mass = volume × density. Use the density stated in the material specifications whenever possible.
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Material volume
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Area and thickness

Volume equals area multiplied by layer thickness after converting thickness to metres: V = A × h.

Examples

100 m² at 5 cm is 5 m³. A 65 m² screed at 40 mm is 2.6 m³.

Important limit

Material density and waste vary by product and conditions. Use supplier data for ordering.

For layers, slabs and fill materials

Area-to-volume calculations usually need one missing dimension: thickness or depth. For example, 40 m² covered 25 mm deep is 1.0 m³. The same relation works for layers such as screed, concrete or fill. If you are using area and height to estimate a room, skip or storage volume, remember that packing gaps and irregular heights can make the real usable volume different from a solid material calculation.