| Depth | Cu yd | Tons (≈1.4 t/yd³) |
|---|
| 2″ | 1.23 | 1.73 |
| 3″ | 1.85 | 2.59 |
| 4″ | 2.47 | 3.46 |
| 6″ | 3.70 | 5.19 |
| 8″ | 4.94 | 6.91 |
Worked example
10 × 20 = 200 sq ft; × 4 in ÷ 12 = 66.7 cu ft; ÷ 27 = 2.47 yd³ ≈ 3.46 tons. Density varies by stone type and moisture, so confirm with your supplier.
Frequently asked questions
How many tons of gravel for 10×20?
About 3.46 tons at 4 inches.