Math CentralQuandaries & Queries


Question from Robin, a parent:

how much concrete will i need for a slab that is 14' x 18' and 4 inches thick..tried
but still can not figure it out. what i really need to know is how much of each will i need, cement, gravel and sand.
Thanks robin

Hi Robin,

You can use our volume calculator at to calculate the volume of concrete you need. As for the amount of cement, gravel and sand it depends on the proportion of each you are using. You need to ask for advise from the dealer where you are purchasing the cement.


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