Cubic Yards and Cubic Feet Calculator

Find the volume of a box or cylinder, or convert a volume between cubic yards, cubic feet, cubic inches and cubic meters.

How it works

Box = length × width × depth. Cylinder = π × (diameter ÷ 2)² × depth. 1 cubic yard = 27 cubic feet (3 × 3 × 3). 1 cubic foot = 1,728 cubic inches. 1 cubic foot = 0.3048³ = 0.028316846592 m³ exactly (NIST), so 1 m³ ≈ 35.3147 cu ft and 1 cu yd ≈ 0.7646 m³.

Worked example: A space 3 × 3 × 3 ft is 27 cu ft = 1 cubic yard = 0.7646 m³. A round hole 2 ft across and 3 ft deep is π × 1² × 3 = 9.42 cu ft (0.35 cu yd).

Assumptions

All three dimensions use the same unit; enter depth in feet (or meters), not inches. For depths in inches, use the concrete, gravel or mulch calculators.
Straight sides and an even depth. Loose materials may settle or compact, so order extra as your supplier suggests.

Frequently asked questions

How many cubic feet are in a cubic yard?

27, because a cubic yard is 3 ft × 3 ft × 3 ft.

How many cubic feet are in a cubic meter?

About 35.31. Oregon State University Extension lists 1 cubic meter as 35.314 cubic feet; from NIST's exact foot (0.3048 m) it is 35.3147.

How do I convert cubic feet to cubic yards?

Divide by 27. For example, 54 cubic feet is 2 cubic yards.

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Sources

Formulas and reference values are from these sources. Page last reviewed 2026-10-19.