How to use this dump truck load calculator
Estimate truck trips using editable payload and material density. Measure the longest and widest sides in feet and the material depth in inches. The tool estimates cubic yards and converts to short tons using the density you enter. Apply an allowance for uneven ground, compaction, or spillage as appropriate to the material.
Important assumptions
The legally allowable payload may be lower than the bed's advertised capacity. Weight limits, axle ratings and road restrictions matter. Always confirm payload and legal limits with the hauler.
Formula used
Volume (cubic yards) = length (ft) × width (ft) × depth (in) ÷ 324. Then multiply by (1 + your additional allowance as a decimal). Estimated US short tons = cubic yards × your density in US short tons per cubic yard.
For bulk material, enter price per yard or ton as labelled. The calculator adds any delivery fee entered, but does not automatically include tax, labor, permits or disposal.
Common project planning mistakes
- Confusing cubic yards of volume with tons of weight.
- Ordering by loose volume when your specifications refer to compacted depth.
- Assuming one dump truck can legally transport every material at the same payload.
- Using a national average price instead of requesting a local supplier quote.
Disclaimer: These estimates are for planning only and do not replace engineering specifications or quotes.
Worked ordering example
A 20-cubic-yard order at an assumed 1.5 US tons per yard weighs 30 US tons. At 15 US tons per legal payload, that is 2 trips. At an illustrative $45 per ton plus $100 in total delivery charges, the material-and-delivery estimate is $1,450. These are example inputs, not current supplier prices.
Common questions
How many cubic yards fit in a dump truck?
It depends on both the truck body’s volume and the permitted load weight. This calculator estimates trips by weight only. Confirm body capacity separately, especially for light bulky material such as mulch.
How are truck trips calculated?
The tool multiplies cubic yards by your material density to estimate US tons, divides by the entered legal payload, and rounds up. A 30-ton order at 15 US tons per trip requires 2 trips; a 31-ton order requires 3.
Is legal payload the truck’s gross vehicle weight rating?
No. Payload is the weight of cargo the truck can carry under its actual operating limits. Gross weight includes the truck itself. Obtain the legal usable payload from the carrier; axle limits, configuration and route rules can matter.
Understand cubic yards, US tons and supplier conversion factors →