Calculators / Topsoil
Topsoil Calculator
To calculate topsoil, enter the length, width, and depth; this tool returns the volume in cubic yards and a cost estimate. One cubic yard covers 108 sq ft at 3 inches deep.
Real math, not AI guesses.
You need
3.7 cubic yards
Estimated cost
~$130
- Volume
- 100 cu ft
- Cubic yards
- 3.7
Estimate only — actual quantities and prices vary by region and supplier. Verify with a professional before purchasing. Default price is a national average (as of 2026-06); edit it to match your supplier.
How to calculate topsoil
The formula: cubic yards = (length × width × depth⁄12) ÷ 27
- Measure the length and width in feet and the depth in inches.
- Multiply length × width × (depth ÷ 12) for cubic feet, then divide by 27 for cubic yards.
- Use 3–4 inches for new beds and 4–6 inches for raised beds or leveling.
- Topsoil settles, so round up rather than down.
Prices shown are national averages (as of 2026-06) and vary by region, brand, and supplier. They are estimates, not quotes.
Topsoil FAQ
How much topsoil do I need?+
A 20 ft × 15 ft area at 4 inches deep is about 3.7 cubic yards of topsoil.
How many cubic yards of topsoil cover 1000 sq ft?+
At 3 inches deep, 1000 sq ft needs about 9.3 cubic yards of topsoil.