Foundation slab and circular placement
Input Rect(L=5, W=2, T=0.15), Circle(D=1.2, T=0.2), loss=5%, capacity=8m³
Output Net 1.73 m³ / With loss 1.82 m³ / Trucks 1 (estimate)
Concrete volume calculator (m³ / yd³) with truck estimate
Add multiple shape volumes, then calculate the waste-adjusted quantity and estimated truck count.
The truck estimate explains the round-up and includes a row-by-row breakdown for checking.
Supports rectangular, trapezoid, circular, and cylindrical shapes
Rounds truck count up from the waste-adjusted volume
All data stays in your browser
How to use the calculator
- Choose a volume unit (m³/yd³) and dimension unit (m/cm/mm/ft).
- Add rows and enter dimensions for a rectangle, trapezoid, circle, or cylinder.
- Enter waste (%) and truck capacity per load, then review the volume and estimate.
- Use the breakdown and formulas to cross-check the result, then copy it when needed.
Examples
Extended placement with a trapezoid section
Input Trapezoid(a=0.8, b=1.2, h=0.3, L=20), loss=7%, capacity=6m³
Output Divides the waste-adjusted volume by truck capacity and shows rounded loads plus margin
Frequently asked questions
What does Trapezoid mean in this tool?
It is the trapezoid cross-section area multiplied by the extension length (section × length).
Can I use a waste rate above 30%?
Yes. The tool shows a warning and still calculates the result.
What happens when the truck count is fractional?
The count is always rounded up to a whole load, with the rounding reason and margin shown.
Can I view m³ and yd³ together?
Yes. Choose the primary unit; the other unit is shown as a secondary value.
Can I treat the truck count as final?
No. Truck count is an estimate. Final ordering should reflect actual transport and contract conditions.
Notes (estimate)
- Truck capacity, loading behavior, and practical payload vary by region, supplier, truck type, roads, legal limits, and site constraints.
- This tool provides an estimate. Confirm the final quantity with your supplier and transport conditions.