Choose a planning method
Material coefficients must come from your engineer or quantity surveyor. Floor area alone cannot determine a safe steel or concrete requirement.
Materials/Structure · FREE
Building Materials
Scale an engineer-supplied bill-of-quantities allowance and make waste assumptions explicit.
Your planning summary
Complete the inputs to see your result and assumptions. No login or contact details required.
UNDERSTAND YOUR RESULT
Plan Your Material Quantities
Build a quantity list from measured needs or an engineer-provided allowance. Published product families help compare specifications without assuming stock or price.
Select quantities and products
Keep wet concrete, aggregate, cement and ready-mix allowances separate when they describe the same work. Waste is applied once.
Review waste and packages
Review the displayed breakdown and assumptions before using this estimate.
Explore an illustrative example
Custom quantity 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?
- Use a bill of quantities. Material coefficients must come from your engineer or quantity surveyor. Floor area alone cannot determine a safe steel or concrete requirement.
- Avoid duplicate allowances. Keep wet concrete, aggregate, cement and ready-mix allowances separate when they describe the same work. Waste is applied once.
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
BOQ: area × supplied coefficient × waste factor. Product: packages=ceil(required quantity × waste factor / package quantity). Cost only from current reviewed catalog prices; custom products remain quantity-only.
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
Use a bill of quantities
Material coefficients must come from your engineer or quantity surveyor. Floor area alone cannot determine a safe steel or concrete requirement.
Avoid duplicate allowances
Keep wet concrete, aggregate, cement and ready-mix allowances separate when they describe the same work. Waste is applied once.
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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YOUR NEXT PROPERTY STEP
Turn Quantities Into a Better Plan
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