Freight class calculator
Freight class is largely driven by density. Enter your shipment's weight and dimensions for a density-based class estimate.
Density–
Estimated class–
| Density (lb/ft³) | Freight class |
|---|---|
| 50+ | 50 |
| 35 – 50 | 55 |
| 30 – 35 | 60 |
| 22.5 – 30 | 65 |
| 15 – 22.5 | 70 |
| 12 – 15 | 77.5 |
| 10 – 12 | 85 |
| 8 – 10 | 92.5 |
| 6 – 8 | 100 |
| 4 – 6 | 125 |
| 2 – 4 | 150 |
| 1 – 2 | 175 |
| <1 | 250 – 500 |
Frequently asked questions
How is freight class determined?
NMFC freight class officially depends on density, stowability, handling and liability — but density is the dominant factor for most general commodities, and many shippers use a density-based lookup table as a fast estimate.
Is this freight class estimate exact?
No — treat it as a starting estimate. Your commodity's actual NMFC item number can override the density-based class regardless of how dense the shipment is. Confirm the exact class with your carrier or a certified NMFC lookup before booking.