Convert an area in square feet to a volume in cubic feet and cubic yards using the depth or height of the material.
The calculator multiplies area by depth to give the volume in cubic feet, cubic yards, cubic metres and litres.
Materials such as concrete, soil, mulch, gravel and sand are ordered by volume, but you usually start with a floor area. Multiplying the area by the depth of material gives the volume you need to order.
There are 27 cubic feet in a cubic yard, which is the unit many bulk suppliers use. Add a small waste allowance and remember that loose materials settle, so order slightly more than the bare calculation.
Multiply the area in square feet by the depth in feet. If your depth is in inches, divide it by 12 first. The calculator handles this automatically.
There are 27 cubic feet in one cubic yard, since a cubic yard is 3 feet by 3 feet by 3 feet.
Square feet only measure area. Volume needs a third dimension, so you must include how deep or thick the material layer is.
Ordering concrete, topsoil, mulch, gravel and sand, which are sold by cubic yard or cubic metre but measured out over a known area.
Yes. Loose materials compact down, so add around 5 to 10 percent to be sure you have enough to reach the finished depth.
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