Footing & Foundation Size Calculator

Enter your building dimensions and foundation specs to estimate concrete volume, rebar, form lumber, and total cost for a perimeter stem-wall foundation or slab-on-grade.

Building Length (ft)

Building Width (ft)

Footing Width (in)

Footing Depth (in)

Stem Wall Height (ft)

Stem Wall Thickness (in)

Interior Footings (LF)

Waste Factor (%)

Pricing (edit to match local rates)

Ready-Mix ($/cu yd)

Rebar ($/LF)

Form Lumber ($/LF)

Foundation Section

Hover for details • cross-section view

Concrete Needed

17.24 cu yd

465.4 cu ft (incl. 10% waste)

Total Cost

$4,240.63

$31.18 per LF of foundation

Foundation Perimeter

136 LF

Perimeter + interior footings

Purchase Option	Quantity	Est. Cost
Ready-Mix Concrete	17.24 cu yd	$3,016.63
Rebar	544 LF	$680.00
Form Lumber	272 LF	$544.00

Total foundation cost: $4,240.63This estimate covers 17.24 cu yd of ready-mix concrete, 544 LF of rebar, and 272 LF of form boards for a continuous perimeter foundation. Always confirm footing dimensions with your local building code.

Consider scheduling a pump truckFor pours over 10 cu yd, a concrete pump truck often saves labor time and ensures the stem wall forms are filled evenly. Budget an extra $800-1,500 for pump rental.

This is a material estimate only. Foundation requirements vary by soil conditions, frost depth, and local building codes. Always consult a structural engineer and your local building department before pouring.