Shipping & Parcels
Freight class calculator
NMFC class of an LTL shipment from its density (lb/ft³).
- Instant
- Free
- Private (processed locally)
- No sign-up
Estimate a freight class
Enter the weight (lb) and the L × W × H (in) dimensions: the tool computes volume, density (lb/ft³) and the NMFC class.
Good to know
- 18 classes: 50, 55, 60 … up to 500
- Higher density → lower class
- Volume in ft³ = L × W × H ÷ 1728
- North American system (LTL)
Example
| Input | Value |
|---|---|
| Weight | 500 lb |
| Dimensions | 48 × 40 × 48 in |
| Volume | 53.33 ft³ |
| Density | 9.38 lb/ft³ |
| Class | 100 |
Indicative estimate. 100% local calculation.
Frequently asked questions
What is the NMFC freight class?
A North American system (18 classes, 50 to 500) that categorizes LTL goods, mainly by density.
How does density set the class?
The higher the density, the lower the class (and often the cheaper the rate).
Is this the final class?
No: the official class also depends on commodity, handling and liability.