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Ready-mixed concrete deliveries.

Combine measured components without counting intersecting volumes twice.

Read the right quantitative data

Quoted delivery volume, usable load size, minimum order and separate delivery charges.

Check this ordering assumption

Truck count and concrete volume are different outputs; a partly filled final load is still a delivery.

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Confirm the order basis with the supplier and use dimensions from an already specified design.

A worked quantity method

This illustrative set of supplied inputs demonstrates Concrete Calculator. Replace the example measurements and product figures with your own before ordering.

Supplied inputMetric displayUS display
MeasureNaN NaN
Length4 m13.12 ft
Width5 m16.4 ft
Thickness100 mm3.94 in
Waste allowance10 %10 %
Area to excludeNaN m²NaN ft²
Supplier volume order incrementNaN m³NaN yd³
Order = round up(Σ(net area × thickness × count) × (1 + allowance) ÷ increment) × incrementCalculate each non-overlapping section from your specified footprint and thickness, add their volumes, and apply the allowance once to the combined pour. If a supplier order increment is entered, round the combined volume up once. A zero increment returns the unrounded requirement. This calculator does not choose slab thickness, reinforcement or a concrete mix.

Concrete to order: 2.2 m³

Net pour area
20 m²
Calculated volume
2 m³
Waste allowance
0.2 m³
Supplier rounding surplus
0 m³

Dimensions come from your plan. Confirm order increments and the specification with your supplier.

Open this example in the full calculator
BEFORE YOU CALCULATE

Your measurement and product-data sheet

Record what you know and mark verified items ready. Notes save on this browser after you edit them. Download a copy before clearing browser data.

Combine measured components without counting intersecting volumes twice.

Quoted delivery volume, usable load size, minimum order and separate delivery charges.

Truck count and concrete volume are different outputs; a partly filled final load is still a delivery.

Input for Concrete Calculator. Record the value with its unit and quantity basis. Available choices: One rectangular section; Several sections or mixed shapes

Input for Concrete Calculator. Record the value with its unit and quantity basis.

Input for Concrete Calculator. Record the value with its unit and quantity basis.

Input for Concrete Calculator. Record the value with its unit and quantity basis.

Input for Concrete Calculator. Record the value with its unit and quantity basis.

Input for Concrete Calculator. Record the value with its unit and quantity basis.

Enter 0 for an unrounded volume. Use the increment quoted by your supplier.

Choose your next calculation

Turn the estimate into an order

  1. Confirm that all quantities use the same measured basis and the selected product's current data.
  2. Keep different products, finishes and handed variants in separate purchase lines.
  3. Review exact demand and whole-pack purchase quantities before entering your quoted prices.
  4. Record compatible stock already on hand, then save the remaining order in your browser project.

Measurement and purchase guides

Other materials in this family

Reviewed 6 October 2026. Geometry and purchase arithmetic use your measurements and selected specifications. Calculation scope.

Evaluate supplied material and purchase alternatives

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