cubic metres to tonnes

Ah, converting cubic metres to tonnes—sounds straightforward, but it’s a sneaky little trap. You see, cubic metres measure volume, while tonnes measure weight, so you need the material's density to make the leap. For example, 1 cubic metre of water weighs 1 tonne, but a cubic metre of gravel or sand will differ.

In short, tonnes = cubic metres × density (tonnes per cubic metre). Without knowing the density, you’re just guessing. So, if you’re dealing with concrete (~2.4 t/m³), 1 cubic metre weighs about 2.4 tonnes. For precise conversions, check the material’s density specs or consult resources like ServiceCentral.