Cubic Yard Calculator
Convert project dimensions into cubic yards for soil, gravel, mulch, concrete, and similar materials.
Planning estimate only. Verify product specifications, field measurements, safety requirements, and applicable codes before buying or building.
Reviewed September 6, 2026Runs in your browser
Enter your numbers
How this calculator works
Cubic yards = length × width × (depth in inches ÷ 12) × quantity ÷ 27, with the waste allowance added.
Worked example
A 20 × 10 ft area at 6 in deep with 10% extra equals about 4.07 cubic yards.
Sources & assumptions
One cubic yard equals 27 cubic feet. The calculator determines volume only; density, weight, compaction, moisture, and delivery minimums depend on the selected material and supplier.
Frequently asked questions
Why divide cubic feet by 27?
One cubic yard contains 27 cubic feet: 3 ft × 3 ft × 3 ft.
Does this calculate weight?
No. Weight depends on material density and moisture. Use a material-specific calculator when ordering by ton.