You need about
1.36 cubic yards of topsoil
1.49tons (typical)
36.7cubic feet
490.75 cu ft bags
Includes 10% extra for waste. Weight assumes about 1.1 tons per cubic yard (range 0.9–1.25).
The working
10 ft × 10 ft × 4/12 ft = 33.3 cubic feet. Add 10% = 36.7 cubic feet. Divide by 27 = 1.36 cubic yards.
Change the numbers
–cubic yards
–tons (typical)
–cubic feet
–bags
What if it is a different depth?
| Depth | Cubic yards | Tons | Bags |
|---|---|---|---|
| 2 in | 0.68 | 0.75 | 25 |
| 3 in | 1.02 | 1.12 | 37 |
| 4 in (this page) | 1.36 | 1.49 | 49 |
| 6 in | 2.04 | 2.24 | 74 |
What you will also need for topsoil
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Good to know
Spread topsoil 4 in at the very least and 4–6 in for a new lawn. For a raised bed, 12 in is a safe default fill depth, and deep-rooted vegetables can need more. Soil settles, so a little extra is normal.