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Gravel & Road Base Calculator (Tons)

Turn an area and depth into cubic yards and tons of road base, gravel, crushed stone, sand or topsoil.

ft
ft
in
t/yd³
%

Tons needed

4.07 tons

Cubic yards (with extra)
2.72 yd³
Metric tonnes
3.70 t
Pounds
8,148 lb
Density used
1.5 tons/yd³

Densities in the list are rough typical figures — they change with moisture and compaction, so use your supplier's number when you have it.

Show the work

  1. Cubic yards (ft³ ÷ 27), plus extra for compaction

    yd³ = length × width × (depth ÷ 12) ÷ 27 × (1 + extra ÷ 100)

    20 × 10 × (4 ÷ 12) ÷ 27 × (1 + 10 ÷ 100) = 2.71605 yd³

  2. Tons: cubic yards × density

    tons = yd³ × density

    2.71605 × 1.5 = 4.07 tons

Want this on your site? Embed the gravel & road base calculator (tons).