How Much Gravel for a 20x50 Driveway?
12.96 cu yd
A 20 × 50 ft driveway covered with 4 inches of gravel needs about 12.96 cu yd (350 cu ft), including 5% extra. At 1.4 tons per cubic yard, that weighs roughly 18.15 tons.
Gravel for a 20 × 50 ft driveway by depth (5% extra, 1.4 t/yd³)
| Depth | Cubic yards | Tons |
|---|---|---|
| 2 in | 6.48 cu yd | 9.07 tons |
| 4 in | 12.96 cu yd | 18.15 tons |
| 6 in | 19.44 cu yd | 27.22 tons |
Adjust the numbers
The calculator below is pre-filled with the numbers above. Change any value to match your project.
You need12.96 cu yd
- In cubic feet
- 350 cu ft
- Approx. weight
- 18.15 tons
- Bags (0.5 cu ft (~50 lb))
- 700 bags
- Area covered
- 1,000 sq ft
How it is calculated
Volume is the area multiplied by the depth. Depth is entered in inches and divided by 12 to convert it to feet.
Cubic feet are divided by 27 to get cubic yards. Many suppliers sell gravel by the ton, so the volume is multiplied by the weight per cubic yard.
Open the full gravel calculator for other shapes, a worked example and FAQs.