Concrete Calculator is necessary when you are doing any sort of a construction task, it is always a good idea to start out by knowing how much of the supplies you will end up needing. When it comes to concrete, this can be a perplexing process.

Concrete calculator involves multiplying the length, width and depth of the areas that requires to be filled and then dividing that number by 27 (the number of cubic feet in a cubic yard) and then adding 10% to allow for spillage and slab depth variations.

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## Concrete Mix Calculation

Our mix-on-site concrete calculation is created on batching by volume. You can also calculate the quantity of sand and gravel required by weight; Simply multiply the volumetric quantity of sand and gravel with 1400 kg/m3 (bulk density of sand) and 1600 kg/m3 (bulk density of stone) respectively, when calculating in metric units.