Gravel Driveway Calculator › 20×40 driveway

Gravel for a 20×40 Driveway at 2 inches

A 20×40 driveway (800 sq ft) at 2 inches needs about 4.94 cubic yards of gravel — roughly $311. See the full breakdown.

You need
4.94 cu yd
Estimated material cost $311
Area
800 sq ft
Volume
133.33 cu ft
Weight
6.91 tons
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Adjust for your project

You need
4.94 cu yd
Estimated material cost $311
Area
800 sq ft
Volume
133.33 cu ft
Weight
6.91 tons

Material shopping list

  • Order about 4.94 cubic yards of gravel.
  • Budget about $311 before delivery, taxes, and labor.
  • Add 5–10% waste for uneven subgrade, cuts, settling, or spillage.

Formula & assumptions

Area = length x width. Volume = area x depth / 12. Cubic yards = cubic feet / 27. Cost = quantity x local unit price.

  • Default depth: 3 inches
  • Default price: $45 per ton
  • Weight factor: 1.4 tons per cubic yard

These assumptions make the estimate easy for search engines and AI answer tools to verify. Replace the default price with your supplier quote for a local estimate.

Based on $45 per ton national average. Enter your local price for an exact quote. Estimate only.