Soil for a 4x6 Raised Bed 12 Inches Deep
How much soil for a 4x6 raised bed 12 inches deep: 24.0 cubic feet, which is 0.89 cubic yards, 12 bags of 2 cubic feet or 16 bags of 1.5 cubic feet.
Volume and tonnage calculator →The math
- Volume: 4 × 6 × (12 ÷ 12) = 24.0 cu ft.
- Cubic yards: 24.0 ÷ 27 = 0.89 yd³.
- Bags: 24.0 ÷ 2 = 12 bags (2 cu ft), or ÷ 1.5 = 16 bags (1.5 cu ft).
The topsoil calculator handles any bed size.
Related: Soil for a 4x10 Raised Bed 12 Inches Deep
Soil for a 4x6 bed at other depths
| Depth | Cubic feet | Cubic yards | 2 cu ft bags |
|---|---|---|---|
| 6 in | 12.0 | 0.44 | 6 |
| 8 in | 16.0 | 0.59 | 8 |
| 10 in | 20.0 | 0.74 | 10 |
| 12 in | 24.0 | 0.89 | 12 |
| 18 in | 36.0 | 1.33 | 18 |
| 24 in | 48.0 | 1.78 | 24 |
Bags or bulk?
Bulk soil is usually cheaper per cubic yard than bags once you pass roughly 1 yard. At 0.89 yards, bags are simpler. Fill several beds at once to make a delivery worthwhile.
Related: Soil for a 5x10 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
Many people underestimate settling, so beds end up low by the second season. Others pile soil or mulch against tree trunks and siding, which invites rot and insects. Wet, sticky soil should wait for a drier day before spreading.
Delivery and spreading
Ask the supplier where the truck can safely dump without crossing soft lawn or septic fields. Cover the pile if rain is coming. Spread with a flat shovel and a landscape rake, working from the far end back toward the pile.
Questions people ask
How many bags of soil for a 4x6 raised bed?
About 12 bags of 2 cubic feet at 12 inches deep.
How many cubic feet in a 4x6x12 inch bed?
24.0 cubic feet.
How many yards of soil for a 4x6 raised bed?
About 0.89 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 4x4 Raised Bed 12 Inches Deep
- Soil for a 4x4 Raised Bed 18 Inches Deep
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