Calculate density (Weight ÷ Volume) and estimate Freight Class using North American NMFC density breaks.
Reference only: rules vary by country and carrier. Final class follows tariff/contract.
| Density (lb/ft³) | Estimated Class |
|---|---|
| < 1 | 400 |
| 1 – < 2 | 300 |
| 2 – < 4 | 250 |
| 4 – < 6 | 175 |
| 6 – < 8 | 125 |
| 8 – < 10 | 100 |
| 10 – < 12 | 92.5 |
| 12 – < 15 | 85 |
| 15 – < 22.5 | 70 |
| 22.5 – < 30 | 65 |
| 30 – < 35 | 60 |
| 35 – < 50 | 55 |
| ≥ 50 | 50 |
This tool estimates by density only. Final class follows tariff/contract, NMFC item, and carrier judgement.
Other factors (handling, stowability, liability), rounding, measurement differences with packaging/pallets, and mixed pallets can change class.
Density calculations are useful, but Freight Class systems may differ or not exist outside North America. Use density only as a reference.