Concrete Footing Calculator

Calculate cubic yards of concrete needed for footings. Enter length, width, and depth of your footing.

Length (ft)

Width (in)

Depth (in)

Quantity

Enter footing dimensions.

Formula

Volume = Length(ft) × Width(ft) × Depth(ft) / 27 cubic yards

Example: 40 ft long, 18″ wide, 12″ deep
= 40 × 1.5 × 1 / 27 = 2.22 cubic yards

Last updated: 2026-08-08