1. Ensure your area is accurately measured. Use the toggle at the top to select Imperial or Metric units.
2. Enter your total length, width, and desired concrete thickness.
3. Advanced feature: Input the depth of your crushed gravel sub-base to calculate aggregate needs.
4. Always keep the waste margin at 5% to 10%. Subgrades are rarely perfectly level, and forms expand during pours.
5. Click Download Report to generate a branded, client-ready PDF estimate containing the 3D visual reference.
Imperial Volume: (Length_ft × Width_ft × (Thickness_in ÷ 12)) ÷ 27 = Cubic Yards.
Metric Volume: Length_m × Width_m × (Thickness_cm ÷ 100) = Cubic Meters.
Total Order: Volume × (1 + (Waste % ÷ 100)).
Weight Conversion: Concrete weighs approx. 150 lbs per cubic foot (2400 kg per cubic meter).
Cost Calculation: Total Order Volume × Cost per Unit.
Calculations assume standard weight concrete. Air-entrained or lightweight mixtures will alter the final structural weight.
Bag yield is calculated using standard 80lb pre-mixed bags (yields approx 0.60 cubic feet) or standard 36kg metric bags.
Values provided are estimates. Final material ordering should always be verified by the contractor on-site.