Gravel for a 40×100 area
49.38 cubic yards (69.1 tons)
of gravel for 4000 sq ft at 4 inches deep. Add about 5% for compaction and spillage.
A 40×100 foot area is 4000 square feet. Use 2 to 3 inches for a path or decorative cover, 4 inches for a patio, shed or slab base, and 6 to 8 inches (in layers) for a driveway or parking pad.
Gravel for 40×100 by depth
| Depth | Cubic yards | Tons | 50 lb bags |
|---|---|---|---|
| 2 in | 24.69 | 34.6 | 1383 |
| 3 in | 37.04 | 51.9 | 2075 |
| 4 in | 49.38 | 69.1 | 2766 |
| 6 in | 74.07 | 103.7 | 4149 |
| 8 in | 98.77 | 138.3 | 5531 |
| 12 in | 148.15 | 207.4 | 8297 |
How it’s worked out
- 100 × 40 × 4 in ÷ 12 = 1,333.33 cu ft.
- 1,333.33 ÷ 27 = 49.383 cu yd.
- 49.383 × 1.4 tons per yard = 69.14 tons.
Change the numbers
Other area sizes
- 30×100 area
- 50×100 area
- 25×100 area
- 24×100 area
- 40×60 area
- 20×100 area
- 40×50 area
- 60×100 area
- 16×100 area
- 40×40 area
- 15×100 area
- 12×100 area
Questions
- How much gravel do I need for a 40×100 area?
- 49.38 cubic yards (about 69.1 tons) at 4 inches deep, and 74.07 cubic yards (103.7 tons) at 6 inches.
- How many tons of gravel for 40×100?
- About 69.1 tons at 4 inches, assuming 1.4 tons per cubic yard. Crushed stone with fines can weigh up to 1.5 tons a yard.
- How many bags of gravel for 40×100?
- About 2766 bags of 50 lb at 4 inches deep. Above a ton or so, bulk delivery is much cheaper.
- How much does gravel for 40×100 cost?
- About $3,457 at $50 a ton for a 4 inch layer, before delivery. Prices range from about $15 to $75 a ton depending on stone type.