Metric Unit Calculator
The formula, your substituted values, and the evaluated result are shown below.
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View offerAffiliate link — we may earn a commission at no extra cost to you.Convert rectangular project dimensions in feet to cubic yards.
This is a planning estimate. Confirm dimensions, allowances, material specifications, applicable codes, and supplier requirements before purchasing or construction.
Convert rectangular project dimensions in feet to cubic yards.
Landscape materials and concrete are often sold by the cubic yard in the US. The calculator works out the volume in cubic feet and divides by 27, the number of cubic feet in a cubic yard (3 × 3 × 3):
Cubic yards = length (ft) × width (ft) × depth (ft) ÷ 27
All three inputs are in feet, including depth. Convert inches to feet by dividing by 12, so 3 inches = 0.25 ft and 4 inches = 0.333 ft.
Most suppliers sell in half or quarter yards, so you'd order 1.5 yd³. For bagged mulch (often 2 ft³ bags), 40 ÷ 2 = 20 bags.
| Material | Typical depth |
|---|---|
| Mulch | 2–4 in |
| Topsoil for a new lawn | 4–6 in |
| Gravel path | 2–4 in over a base |
| Concrete patio or walkway | 4 in |
| Concrete driveway | 4–6 in |
If you know the area in square feet and the depth in inches, the square feet to cubic yards calculator saves a step.
One cubic yard = 0.7646 m³, and one cubic metre = 1.308 yd³.
27 cubic feet (3 ft × 3 ft × 3 ft).
About 108 ft² at 3 inches deep, or 81 ft² at 4 inches.
Roughly 2,600–3,000 lb (about 1.3–1.5 US tons), depending on the stone and moisture.