Balance payload, pallets, space, and utilization instantly. Test cargo dimensions, density, and limits before dispatch. Make loading decisions with fewer delays, risks, and surprises.
| Scenario | GVWR (kg) | Tare (kg) | Truck Size (m) | Unit Size (m) | Unit Weight (kg) | Expected Units |
|---|---|---|---|---|---|---|
| Urban box truck | 18,000 | 7,800 | 7.2 × 2.4 × 2.6 | 1.2 × 1.0 × 1.4 | 650 | 12 |
| Regional freight truck | 26,000 | 11,000 | 8.5 × 2.45 × 2.7 | 1.1 × 1.1 × 1.2 | 900 | 15 |
| Medium delivery truck | 12,000 | 5,200 | 5.8 × 2.2 × 2.3 | 1.0 × 0.8 × 1.0 | 450 | 13 |
| Heavy route truck | 32,000 | 13,000 | 9.6 × 2.45 × 2.8 | 1.2 × 1.0 × 1.6 | 1,100 | 16 |
1. Available payload
Available payload = GVWR − Tare weight − Safety reserve
2. Cargo volume
Cargo volume = Truck length × Truck width × Truck height
3. Unit volume
Unit volume = Unit length × Unit width × Unit height
4. Space layout capacity
Space capacity = floor(Truck length ÷ Unit length) × floor(Truck width ÷ Unit width) × Usable layers
5. Usable layers
Usable layers = minimum of maximum stack layers and floor(Truck height ÷ Unit height)
6. Volume capacity
Volume capacity = floor((Cargo volume × Load efficiency) ÷ Unit volume)
7. Weight capacity
Weight capacity = floor(Available payload ÷ Unit weight)
8. Rear axle capacity
Rear axle capacity = floor(Rear axle allowance ÷ (Unit weight × Rear axle share))
9. Final recommended units
Recommended units = minimum of space, volume, payload, and rear axle capacities
It estimates the maximum safe number of load units a truck can carry using payload, cargo space, volume efficiency, stacking limits, and rear axle allowance.
GVWR sets the truck’s legal maximum operating weight. The calculator subtracts tare weight and reserve weight from GVWR to estimate usable payload.
A reserve protects against scale variation, packaging changes, route uncertainty, and real-world loading differences. It keeps planning more conservative and safer.
Load efficiency reflects usable cargo volume after allowing for gaps, bracing, uneven stacking, wheel arches, and practical loading losses inside the truck.
Space capacity uses physical fit by rows, columns, and layers. Volume capacity uses total usable cubic space. Irregular dimensions often make space capacity lower.
It estimates how much of each load unit’s weight transfers to the rear axle. This helps flag axle limits before total payload is reached.
Yes. Enter any standard load unit size and weight. The calculator works for pallets, crates, bins, cartons, or other repeatable freight units.
No. Use it for planning support. Always confirm vehicle ratings, legal axle rules, route restrictions, cargo securement, and operational safety checks before dispatch.
Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.