01 · Estimator
Fast Density Math.
Clear LTL Starting Point.
For many commodities, density is now the main driver. This tool gives the quick estimate your shipping team needs before tendering, quoting, or checking whether a shipment is likely to class higher than expected.
Results
Density-based class estimate
The output below is a density estimate only. Carrier or NMFC review can still move the shipment to a higher class for handling, stowability, or liability reasons.
Estimated freight class
65
22.5 to less than 30 lb/ft³
Density
22.5
Pounds per cubic foot
Total shipment
1,200 lb
53.3 cubic feet across 1 unit
Class 50
50 or greater lb/ft³
Band
Class 55
35 to less than 50 lb/ft³
Band
Class 60
30 to less than 35 lb/ft³
Band
Class 65
22.5 to less than 30 lb/ft³
Estimated match
Class 70
15 to less than 22.5 lb/ft³
Band
Class 85
12 to less than 15 lb/ft³
Band
Class 92.5
10 to less than 12 lb/ft³
Band
Class 100
8 to less than 10 lb/ft³
Band
Class 125
6 to less than 8 lb/ft³
Band
Class 175
4 to less than 6 lb/ft³
Band
Class 250
2 to less than 4 lb/ft³
Band
Class 300
1 to less than 2 lb/ft³
Band
Class 400
Less than 1 lb/ft³
Band
Per-unit volume
53.3 cubic feet
Applied logic
Density determines the class band first, then caution flags warn when the final class could be pushed higher by actual commodity traits.
Caution flags
No extra caution flags selected.
02 · Method
The Estimator Uses
Density, Then Context
The core estimate is straightforward: convert cubic inches to cubic feet, divide total weight by total cubic feet, then map that density into the current 13-tier freight class bands.
Measure As Tendered
Use the actual length, width, height, and weight of the freight unit as it will ship, including pallet, crate, stretch wrap, and any protective packaging.
Convert to Density
The estimator converts cubic inches to cubic feet and then calculates pounds per cubic foot. That density determines the estimated class band.
Map to Class
The result is mapped against the current density tiers, from Class 400 at under 1 lb/ft³ down to Class 50 at 50 lb/ft³ and above.
03 · Cautions
Density Helps.
It Does Not Overrule Commodity Reality.
Final class can still move higher if the shipment is unusually fragile, hard to handle, difficult to stow, or exposed to elevated liability.
Stowability Matters
Non-stackable freight, awkward shapes, or freight that wastes trailer cube can trigger higher final classification than the pure density number suggests.
Commodity Rules Still Apply
Some commodities still require specific NMFC treatment. A density estimate is useful, but it is not a substitute for the actual commodity description and code.
Reclass Risk Is Real
If the tendered dimensions or weight are off, or the commodity is described too loosely, carrier inspection can reclass the shipment and change the charge.
Need More
Freight Planning?
The tools library is growing around recurring shipping and dock questions. If you want another estimator added, send the use case through.