Crushed stone calculator: how much crushed stone do I need?
0.93 cubic yards
25 cubic feet · about 1.3 tons · for 10 × 10 ft at 3 in
Run your own numbers
Enter it the way you measured it: 4.5, 4 1/2,
3/8 or 10' 6".
0.93 cubic yards
25 cubic feet · about 1.3 tons
A 10 by 10 ft area at 3 inches deep needs 0.93 cubic yards of crushed stone, which is 25 cubic feet. Crushed stone is sold by the cubic yard in bulk, so a supplier would deliver 1 cubic yard.
A worked example
A 13 by 9 ft driveway strip at 4 inches deep needs 1.45 cubic yards. 39 cubic feet, so a 1.5 cubic yard delivery covers it.
What else it is called
Crushed stone is sold by its grade — #57 for drainage and under slabs, #411 and crusher run for a base that compacts, #8 for fines — by the cubic yard in bulk or by the ton. The volume you need is the same for all of them, because it is geometry. For a driveway or a base that compacts, pick the compacted state above so the tons match what a dense base weighs in place.
Common sizes
| Area | 2 in deep | 3 in deep | 4 in deep | 6 in deep |
|---|---|---|---|---|
| 8 × 8 ft | 0.40 | 0.60 | 0.80 | 1.19 |
| 10 × 10 ft | 0.62 | 0.93 | 1.24 | 1.86 |
| 10 × 12 ft | 0.75 | 1.12 | 1.49 | 2.23 |
| 12 × 12 ft | 0.89 | 1.34 | 1.78 | 2.67 |
| 12 × 16 ft | 1.19 | 1.78 | 2.38 | 3.56 |
| 16 × 20 ft | 1.98 | 2.97 | 3.96 | 5.93 |
| 20 × 20 ft | 2.47 | 3.71 | 4.94 | 7.41 |
Cubic yards, rounded up to two decimals. Round up again to what your supplier will deliver.
Where the numbers come from
- 1 cubic yard = 27 cubic feet, exact by definition. The volume of crushed stone to cover an area is that arithmetic and nothing else.
- Tons, loose: U.S. Army field manual FM 5-434, Earthmoving Operations, Table 1-2 (Material Weight). Loose dry gravel is 2,700 to 3,000 lb per cubic yard, which is 1.35 to 1.50 short tons. The manual states these are averages that vary with grain size, moisture and compaction. Public domain; read October 1, 2026. Data sheet (PDF)
- Tons, compacted base: Wisconsin Department of Transportation Standard Specifications, section 305, which pays dense base aggregate placed in the roadway at 1.85 tons per cubic yard. Read October 1, 2026. Data sheet (PDF)
- Tons, dense crushed maximum: Ohio Department of Transportation section 304.07 (2008 Construction and Material Specifications), which lists crushed stone and crushed gravel at 4,000 lb per cubic yard, that is 2.0 short tons. Read October 1, 2026. Source
Order by the cubic yard: it is the unit the yard loads and the one this count gives.
By Javier Miralles · Last updated . How this site is made.
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