Gravel Calculator
Enter the area in feet and the depth in inches. A driveway usually needs 4–6 inches; a garden path 2–3 inches.
ft
ft
in
$
Result–
Gravel for common areas
| Area and depth | Cubic yards | Tons (crushed stone) |
|---|---|---|
| 10 × 10 ft, 2 in deep | 0.62 | 0.86 |
| 10 × 10 ft, 4 in deep | 1.23 | 1.73 |
| 10 × 20 ft, 2 in deep | 1.23 | 1.73 |
| 10 × 20 ft, 4 in deep | 2.47 | 3.46 |
| 12 × 40 ft, 2 in deep | 2.96 | 4.15 |
| 12 × 40 ft, 4 in deep | 5.93 | 8.3 |
| 20 × 20 ft, 2 in deep | 2.47 | 3.46 |
| 20 × 20 ft, 4 in deep | 4.94 | 6.91 |
| 10 × 50 ft, 2 in deep | 3.09 | 4.32 |
| 10 × 50 ft, 4 in deep | 6.17 | 8.64 |
| 20 × 50 ft, 2 in deep | 6.17 | 8.64 |
| 20 × 50 ft, 4 in deep | 12.35 | 17.28 |
Cubic yards = length (ft) × width (ft) × depth (in) ÷ 12 ÷ 27
Tons = cubic yards × density (about 1.4 for crushed stone)
Questions
How many tons of gravel do I need for a driveway?
A 12 × 40 ft driveway at 4 inches deep needs about 5.9 cubic yards, or roughly 8.3 tons of crushed stone. Add 10% for compaction.
How much does a cubic yard of gravel weigh?
About 1.3 to 1.5 tons (2,600–3,000 lb), depending on the stone.
How deep should gravel be?
2–3 inches for paths, 4 inches for a driveway top layer, and 6–8 inches total over a base for heavy traffic.