Topsoil calculator
How much topsoil? Enter area and depth for cubic yards and 40 lb bag count.
Short answer: cu yd = (L × W × depth/12) ÷ 27. 40 lb bag ≈ 0.75 cu ft. 15 × 10 ft × 4" = 50 cu ft ≈ 1.85 cu yd or 67 bags. Enter your measurements above and the topsoil calculator returns the quantity, unit conversions and an estimated cost instantly, in imperial or metric — no sign-up needed.
What do you need to measure?
What is the answer?
Cubic yards
1.85
40 lb bags
67
Est. cost (bulk)
$56
How does the topsoil calculator work?
cu yd = (L × W × depth/12) ÷ 27. 40 lb bag ≈ 0.75 cu ft.
What does a worked example look like?
15 × 10 ft × 4" = 50 cu ft ≈ 1.85 cu yd or 67 bags.
What do people ask most?
›How many bags in a cubic yard?
About 36 bags of 40 lb topsoil equal one cubic yard.
›How deep for a new lawn?
4–6" of screened topsoil before seed or sod.
Which yard & landscape calculator should you use next?
Where can you learn more?
Read field notes on estimating and materials, or browse every calculator we make.