Soil for a 4x10 Raised Bed 12 Inches Deep
How much soil for a 4x10 raised bed 12 inches deep: 40.0 cubic feet, which is 1.48 cubic yards, 20 bags of 2 cubic feet or 27 bags of 1.5 cubic feet.
Volume and tonnage calculator →The math
- Volume: 4 × 10 × (12 ÷ 12) = 40.0 cu ft.
- Cubic yards: 40.0 ÷ 27 = 1.48 yd³.
- Bags: 40.0 ÷ 2 = 20 bags (2 cu ft), or ÷ 1.5 = 27 bags (1.5 cu ft).
The topsoil calculator handles any bed size.
Related: Soil for a 5x10 Raised Bed 12 Inches Deep
Soil for a 4x10 bed at other depths
| Depth | Cubic feet | Cubic yards | 2 cu ft bags |
|---|---|---|---|
| 6 in | 20.0 | 0.74 | 10 |
| 8 in | 26.7 | 0.99 | 14 |
| 10 in | 33.3 | 1.23 | 17 |
| 12 in | 40.0 | 1.48 | 20 |
| 18 in | 60.0 | 2.22 | 30 |
| 24 in | 80.0 | 2.96 | 40 |
When bulk soil pays off
This bed is big enough that a bulk load of garden mix usually beats bags. Many yards sell a blended raised-bed mix of topsoil and compost by the yard.
Related: Soil for a 4x8 Raised Bed 12 Inches Deep
What to fill it with
A common home mix is roughly 60 percent topsoil and 40 percent compost, or equal parts topsoil, compost and a drainage material. Avoid filling with plain clay fill dirt, which packs hard.
Settling
New soil settles, often by 10 to 20 percent in the first season. Overfill slightly or plan to top up with compost next spring. Tall beds can be partly filled with logs or branches at the bottom to save soil (a hugelkultur approach).
Common mistakes
Buying by the bag for a large area is the classic error: dozens of bags cost far more than a bulk yard. Another is skipping compost or using unscreened soil full of clods and roots. Spreading soil when it is soaking wet compacts it and makes it hard for roots and water to move.
Weight and hauling
Soil is heavy and mulch is bulky. A half-ton pickup can usually carry only a fraction of a yard of soil safely, even if it looks like more would fit. Delivery is often the safer and faster option.
Questions people ask
How many bags of soil for a 4x10 raised bed?
About 20 bags of 2 cubic feet at 12 inches deep.
How many cubic feet in a 4x10x12 inch bed?
40.0 cubic feet.
How many yards of soil for a 4x10 raised bed?
About 1.48 cubic yards at 12 inches deep.
What soil mix is best for raised beds?
Topsoil blended with compost, roughly 60/40, is a common starting point.
Will raised bed soil settle?
Yes, often 10 to 20 percent in the first season.
Related guides
- How Much Does a Yard of Topsoil Cover?
- How Many Bags of Topsoil in a Yard? Size Chart
- Fill Dirt vs Topsoil: Differences, Uses and Tons to Order
- How Much Does a Yard of Dirt Weigh? Topsoil, Fill, Clay
- Soil for a 4x8 Raised Bed 18 Inches Deep
- Soil for a 4x8 Raised Bed 24 Inches Deep
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