Gravel for a 20×100 area

24.69 cubic yards (34.6 tons)

of gravel for 2000 sq ft at 4 inches deep. Add about 5% for compaction and spillage.

A 20×100 foot area is 2000 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 20×100 by depth

DepthCubic yardsTons50 lb bags
2 in12.3517.3692
3 in18.5225.91038
4 in24.6934.61383
6 in37.0451.92075
8 in49.3869.12766
12 in74.07103.74149

How it’s worked out

  1. 100 × 20 × 4 in ÷ 12 = 666.67 cu ft.
  2. 666.67 ÷ 27 = 24.691 cu yd.
  3. 24.691 × 1.4 tons per yard = 34.57 tons.

Change the numbers

Gravel needed

24.69 cubic yards

About 36.3 tons with 5% extra for compaction and spillage.

Area2,000 sq ft
Cubic yards24.69
Order (with extra)25.93 cu yd
Tons36.3 (about $1,815)
50 lb bags1452

Other area sizes

Questions

How much gravel do I need for a 20×100 area?
24.69 cubic yards (about 34.6 tons) at 4 inches deep, and 37.04 cubic yards (51.9 tons) at 6 inches.
How many tons of gravel for 20×100?
About 34.6 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 20×100?
About 1383 bags of 50 lb at 4 inches deep. Above a ton or so, bulk delivery is much cheaper.
How much does gravel for 20×100 cost?
About $1,728 at $50 a ton for a 4 inch layer, before delivery. Prices range from about $15 to $75 a ton depending on stone type.

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