How much gravel do you need for a 20×50 area?

A 20×50 ft area (1,000 sq ft) filled 4 inches deep needs 13.58 cubic yards of gravel including 10% for compaction — about 19 tons of pea gravel or 20.4 tons of crusher run.

Change the numbers

The calculator below is pre-filled for this project. Adjust any value — including feet and inches — and the results update instantly.

Weights are typical averages; moisture and stone type change them. Your supplier can confirm their tons-per-yard figure.

Your results

Gravel needed19.01 tons

Volume13.58 cu yd

Weight38,025 lb

0.5 cu ft bags (≈50 lb)734

How much gravel do you need for a 20×50 area — diagram

Gravel for 20×50 ft at different depths

Includes 10% extra for compaction.

Depth	Cubic yards	Tons (pea gravel)	Tons (crusher run)
2 in	6.79	9.51	10.19
3 in	10.19	14.26	15.28
4 in	13.58	19.01	20.37
6 in	20.37	28.52	30.56

What to use for this size

A 20×50 area is driveway-sized. For a driveway, a common build is 4 inches of compacted crusher run topped with 2–3 inches of #57 stone, over landscape fabric on soft soil.

The math

20 × 50 × (4 ÷ 12) = 333.3 cu ft × 1.10 extra = 366.7 cu ft = 13.58 cu yd × 1.4 tons/yd³ = 19.01 tons

Common questions

How many tons of gravel for a 20x50 area?

About 19 tons at 4 inches deep (pea gravel, 10% extra included). At 6 inches it's 28.5 tons.

How many yards of gravel for 20x50?

13.58 cubic yards at 4 inches deep, including 10% for compaction.

Want the full method, tips and other sizes? See the gravel calculator guide.

Last reviewed November 1, 2026. Results are estimates — confirm with your supplier.

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