Concrete Truck Load Calculator
Use this concrete truck load calculator to estimate how many ready-mix truck loads may be required for a concrete pour. Enter the total concrete volume and the truck capacity used by the tool to get a quick delivery estimate for slabs, footings, foundations, and other pours. It is useful for planning deliveries, sequencing pours, and understanding whether the final load is likely to be partial.
Enter a volume above to calculate truck loads
Need to calculate volume first? Use our Concrete Volume Calculator.
How this calculator works
This calculator divides the total concrete volume by the truck capacity used for each load. Because you cannot normally order part of a truck as a full independent delivery, the result is rounded up to the next whole load. The calculator first applies the waste percentage to the volume you enter to give an adjusted volume, then divides that by the truck capacity to get the number of loads. It also shows the number of full loads and the remainder volume on the final load, expressed in m³ and as a percentage of the truck capacity. Available truck sizes in this tool are 6, 8, and 10 m³ for metric, and 6, 8, and 10 yd³ for imperial.
Formulas used
adjusted volume = total concrete volume × (1 + waste % / 100)
loads = ⌈adjusted volume ÷ truck capacity⌉
full loads = ⌊adjusted volume ÷ truck capacity⌋
remainder (m³) = adjusted volume - (full loads × truck capacity)
remainder (%) = (remainder m³ ÷ truck capacity) × 100
Volume inputs in ft³ are converted to m³ before calculation. All results are shown in m³, ft³, and yd³. Truck capacities available in this tool are 6, 8, and 10 m³ (metric) or 6, 8, and 10 yd³ (imperial). Check with your supplier for actual available sizes.
Worked example
If the total concrete volume is, say, 17 m³ and a 10% waste allowance is applied, the adjusted volume becomes 18.7 m³. Dividing by a truck capacity of 8 m³ gives 2.3375, which is not a whole number — so the calculator rounds up to 3 loads. The first two loads are full at 8 m³ each, and the remainder on the third load is 18.7 − 16 = 2.7 m³, which is about 34% of truck capacity. This helps you understand whether that final delivery is a small top-up or a more substantial load.
Why truck load estimates matter
Truck load estimates help with delivery planning, site access preparation, labour timing, pump scheduling, and reducing the risk of under-ordering. They are also useful for understanding whether the last delivery is likely to be a small top-up load. This calculator is for planning only and should be checked against supplier limits and the pour sequence on site.
Frequently asked questions
Related tools
- Concrete Volume Calculator — volume for slabs, footings, columns and walls
- Concrete Footing Calculator — volume, bags and cost for footings and foundations
- Concrete Slab Bag Calculator — how many bags of concrete for a slab
- Monolithic Concrete Slab Calculator — concrete volume for slabs with thickened edges
Guides worth reading
- How Many Concrete Truck Loads Do I Need? UK Guide — mixer capacities, part-load charges, waste and site access worked through
Disclaimer: This calculator is for planning and estimating only. Actual delivery quantities vary with waste, site conditions, supplier truck sizes, and pour sequencing. Always confirm final delivery arrangements before placing an order.