Cubic Calculator — 3D Volume & Cubic Yardage
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How to calculate cubic volume
For a box or slab, volume = length × width × height. For a cylinder, volume = π × radius² × height. Keep every dimension in the same unit, then read the result in cubic yards, cubic feet or cubic meters below. The classic site conversion: cubic feet ÷ 27 = cubic yards, because one cubic yard is a 3 ft × 3 ft × 3 ft block (27 ft³).
How do I calculate cubic yards?
Multiply length × width × height with all dimensions in feet to get cubic feet, then divide by 27. Example: 10 ft × 10 ft × 1 ft = 100 ft³ ÷ 27 = 3.70 cubic yards.
How many cubic feet are in a cubic yard?
Exactly 27 cubic feet, since a cubic yard is 3 ft × 3 ft × 3 ft.
How many cubic meters are in a cubic yard?
One cubic yard equals 0.764555 cubic meters; one cubic meter equals 1.30795 cubic yards.
How do I calculate the volume of a cylinder?
Volume = π × radius² × height. A 2 ft diameter (1 ft radius) × 5 ft cylinder = π × 1² × 5 = 15.71 cubic feet.
How do I convert cubic feet to gallons?
One cubic foot holds about 7.48052 US gallons (28.3168 liters). Multiply cubic feet by 7.48052 for gallons.
How much concrete do I need in cubic yards?
Find the slab volume in cubic feet (length × width × thickness in feet), divide by 27, and add ~10% waste. For bag counts and cost, use the Concrete Volume Calculator.