Cubic Yard Calculator
Find how many cubic yards you need for concrete, soil, gravel, or mulch. Enter the area and depth in any unit.
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How it works
One cubic yard equals 27 cubic feet. Multiply length × width × depth (all in feet — convert a depth given in inches by dividing by 12) to get cubic feet, then divide by 27.
Formula
Cubic yards = (Length ft × Width ft × Depth ft) ÷ 27
Frequently asked questions
How many cubic feet are in a cubic yard?
There are 27 cubic feet in one cubic yard (3 ft × 3 ft × 3 ft).
How do I calculate cubic yards for concrete?
Multiply the slab length, width, and thickness in feet, then divide by 27. A 10 × 10 slab at 4 inches thick is about 1.23 cubic yards.
How much is a cubic yard of dirt?
A cubic yard of topsoil covers about 100 square feet at 3 inches deep and typically weighs around 1 to 1.3 tons depending on moisture.