Soil for a 4x16 Raised Bed 12 Inches Deep
A raised bed 4 by 16 feet and 12 inches tall holds 64.0 cubic feet. How much soil for a 4x16 raised bed 12 inches deep in bags: 32 two-cubic-foot bags. In bulk: about 2.37 cubic yards.
Volume and tonnage calculator →The math
- Volume: 4 × 16 × (12 ÷ 12) = 64.0 cu ft.
- Cubic yards: 64.0 ÷ 27 = 2.37 yd³.
- Bags: 64.0 ÷ 2 = 32 bags (2 cu ft), or ÷ 1.5 = 43 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 4x16 bed at other depths
| Depth | Cubic feet | Cubic yards | 2 cu ft bags |
|---|---|---|---|
| 6 in | 32.0 | 1.19 | 16 |
| 8 in | 42.7 | 1.58 | 22 |
| 10 in | 53.3 | 1.98 | 27 |
| 12 in | 64.0 | 2.37 | 32 |
| 18 in | 96.0 | 3.56 | 48 |
| 24 in | 128.0 | 4.74 | 64 |
Bags or bulk?
Bulk soil is usually cheaper per cubic yard than bags once you pass roughly 1 yard. At 2.37 yards, bulk delivery is likely the better deal. 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
Expect the bed to sink a few inches as the soil settles and organic matter breaks down. Mound it a little at first and water it in before planting. In very deep beds, the bottom few inches can be coarse material, since most vegetable roots work the top 12 inches.
Delivery and spreading
Bulk soil and mulch are usually dumped in one pile, so choose a spot on a tarp or driveway close to the work. A wheelbarrow holds about 1/10 to 1/6 of a yard, so a few yards means many trips; a helper and two wheelbarrows speed things up.
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 4x16 raised bed?
About 32 bags of 2 cubic feet at 12 inches deep.
How many cubic feet in a 4x16x12 inch bed?
64.0 cubic feet.
How many yards of soil for a 4x16 raised bed?
About 2.37 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 4x12 Raised Bed 12 Inches Deep
- Soil for a 4x12 Raised Bed 18 Inches Deep
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