### Concrete Calculator Estimate Cement, Sand, Gravel

Our mix-on-site concrete calculation is based on batching by volume (Large construction sites employ batching by weight which is more exact). You can also estimate the quantity of sand and gravel required by weight; Simply multiply the volumetric quantity ofsand and gravelwith 1400 kg/m 3 (bulk densityof sand)and 1600 kg/m 3 (bulk density of stone) respectively, when calculating in metric units.

more