How Much Gravel for a 20x20 Area?
5.19 cu yd
A 20 × 20 ft area covered with 4 inches of gravel needs about 5.19 cu yd (140 cu ft), including 5% extra. At 1.4 tons per cubic yard, that weighs roughly 7.26 tons.
Gravel for a 20 × 20 ft area by depth (5% extra, 1.4 t/yd³)
| Depth | Cubic yards | Tons |
|---|---|---|
| 2 in | 2.59 cu yd | 3.63 tons |
| 4 in | 5.19 cu yd | 7.26 tons |
| 6 in | 7.78 cu yd | 10.89 tons |
Adjust the numbers
The calculator below is pre-filled with the numbers above. Change any value to match your project.
You need5.19 cu yd
- In cubic feet
- 140 cu ft
- Approx. weight
- 7.26 tons
- Bags (0.5 cu ft (~50 lb))
- 280 bags
- Area covered
- 400 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.