Foundation Calculator
Calculate concrete volume for isolated or strip footings, quantity and waste allowance.
🛡 Privacy-first⚡ Fast🔓 No signup📱 Mobile friendly
Dynamic diagram
⚠️ Results are estimates for takeoff and planning. Do not use them as a substitute for structural design, specifications or local building codes; consult a qualified professional when required.
🔎 Use Foundation Calculator with a clear, professional workflow
Calculate footing and foundation concrete volume from length, width, thickness, quantity and optional waste, with a material estimate.
The tool is designed for a clearer mobile and desktop workflow, with organized inputs and results plus copy or print actions where appropriate.
- Clear quantity results for takeoff and planning.
- Practical inputs with cost details where supported.
- Estimates do not replace approved engineering design.
Worked examples and practical tips
Always use the actual formwork dimensions and independently verify structural plans and site conditions.
Rectangular foundation example
A 5 m by 4 m rectangular foundation with 0.20 m uniform thickness uses 4 m³ of concrete before allowance.
Volume = length × width × thickness = 5 × 4 × 0.2 = 4 m³.
💡 Calculation notes
Estimate concrete volume for a foundation using its dimensions, convert cubic meters and include an allowance before ordering.
- This is a volume estimate; it is not a footing design or a verification of load-bearing capacity.
- Allowance for spillage or irregular ground should be chosen according to the job.
ℹ️ How to use
- Enter your data or choose the required file.
- Adjust the available options.
- Run the tool and review the result.
- Copy or download the result when needed.
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