Use your engineer’s dimensions
The dimensions must come from an engineered foundation design. Unknown soil conditions cannot be resolved by a calculator.
Construction · FREE
Foundation Quantities & Cost
Estimate excavation and concrete for dimensions already specified by your engineer.
Your planning summary
Complete the inputs to see your result and assumptions. No login or contact details required.
UNDERSTAND YOUR RESULT
Understand Foundation Quantities
Estimate excavation and concrete from an engineer-designed foundation. Soil capacity and structural design must be confirmed separately.
Enter quantities and rates
Working space and depth can change excavation quantity. Steel is supplied explicitly rather than inferred from footing size.
Review excavation and concrete
Review the displayed breakdown and assumptions before using this estimate.
Explore an illustrative example
Pad measurement example. Use the example button in the calculator to apply these editable inputs.
Illustrative measurements or assumptions only; not an approved design, quote or offer.
What changes your result?
- Measure a specified foundation. The dimensions must come from an engineered foundation design. Unknown soil conditions cannot be resolved by a calculator.
- Excavation differs from concrete. Working space and depth can change excavation quantity. Steel is supplied explicitly rather than inferred from footing size.
Assumptions and limits
Confirm measurements, inclusions and price assumptions. These planning results do not replace professional engineering, legal or lender advice.
Results retain the assumptions you selected. Compare like-for-like areas and avoid counting the same item twice.
View Technical Calculation Details
Footprint=L×W for pad/strip/raft, or π×diameter²/4 for pile. Excavation=footprint×depth×count; concrete=footprint×concrete depth×count×waste factor. No structural sizing is inferred.
Currency totals: 2 decimal places; geometry and quantities: 6. Whole units/boxes round upward with floating-point ULP correction; internal calculation precision is retained.
Formula 2.0.0 · Content/schema 2
Sources and review information
References last checked 2026-10-29. This is not certification of a fee schedule or property.
Your questions, answered
Measure a specified foundation
The dimensions must come from an engineered foundation design. Unknown soil conditions cannot be resolved by a calculator.
Excavation differs from concrete
Working space and depth can change excavation quantity. Steel is supplied explicitly rather than inferred from footing size.
Can I save or download for free?
Yes. PDF and comparisons are free. Saving a report is optional and needs consent; a calculation needs no contact details.
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