Gravel calculator

Cubic yards and tons for gravel, stone, sand, dirt and mulch. Enter the area in feet and the depth in inches.

Material

Length (ft)

Width (ft)

Depth (in)

Cubic yards

7.4

Approx. tons

11.1

Order (+10%)

9 yds

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How the math works

Cubic yards = length (ft) × width (ft) × depth (ft) ÷ 27. Depth in inches ÷ 12 gives feet. A 50 × 12 ft driveway at 4 inches is 7.4 yards.

Tons = cubic yards × the material's weight per yard. Stone runs about 1.4-1.5 tons a yard, fill dirt about 1.2, mulch about 0.3. Wet material weighs more.

Add 10% for waste and uneven subgrade. Add more for base stone like crusher run, which compacts 15-25%.

Weight per yard by material

Pea Gravel — about 1.4 tons/yd³
Crushed Stone — about 1.4 tons/yd³
Crusher Run — about 1.5 tons/yd³
Riprap — about 1.5 tons/yd³
Fill Dirt — about 1.2 tons/yd³
Topsoil — about 1.1 tons/yd³
Concrete Sand — about 1.35 tons/yd³
Masonry Sand — about 1.3 tons/yd³
River Rock — about 1.35 tons/yd³
Recycled Concrete Aggregate (RCA) — about 1.3 tons/yd³
Mulch — about 0.3 tons/yd³