Foundation Calculator
Estimate concrete volume, cubic yards, rough rebar quantity and material cost for strip footings, slabs or pier-and-grade-beam foundations.
Preliminary foundation material estimate
Foundation-calculator intent is practical: estimate concrete volume in cubic yards before ordering ready-mix, then add rough rebar and cost context. This page is not a structural foundation design.
Strip footing volume uses perimeter, footing width and depth.
Ready-mix concrete in the U.S. is commonly ordered by cubic yard.
What is outside the calculator
- Soil bearing capacity, frost depth, drainage, settlement and structural loads require a qualified design.
- Excavation, forms, gravel base, waterproofing, inspections, labor, delivery and pump fees are not included unless you add them separately.
- Local building code and engineering requirements control the final footing size and reinforcement.
Frequently Asked Questions
Sources and References
- Concrete Footing CalculatorInch Calculator
- Footings: Foundation DesignPortland Cement Association
- ACI CODE-318-25: Building Code for Structural ConcreteAmerican Concrete Institute
Calculations are based on the listed reference sources. Links open in a new tab.
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