Free NMFC Freight Class Calculator
Instantly calculate your freight class, avoid costly reclassification fees, and ship smarter.
NMFC Product Lookup
Search our database of 50+ common products to get typical freight class and NMFC codes.
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Freight Class Calculator
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SPECIAL HANDLING (affects class)
📚 NMFC Freight Class Reference Guide
Complete reference of all 18 NMFC freight classes with density ranges and common examples.
| Class | Density (lbs/cu ft) | Common Examples | Rate |
|---|---|---|---|
| 50 | > 50 | Steel, bricks, cement | $ |
| 55 | 35-50 | Hardwood flooring, bricks in boxes | $$ |
| 60 | 30-35 | Auto parts, bottled beverages | $$ |
| 65 | 22.5-30 | Books, bottled water, canned goods | $$ |
| 70 | 15-22.5 | Car accessories, food items, auto parts | $$ |
| 77.5 | 13.5-15 | Tires, bathroom fixtures | $$$ |
| 85 | 12-13.5 | Crated machinery, cast iron stoves | $$$ |
| 92.5 | 10.5-12 | Computers, monitors, refrigerators | $$$ |
| 100 | 9-10.5 | Boat covers, car covers, canvas | $$$$ |
| 110 | 8-9 | Cabinets, framed artwork, table saw | $$$$ |
| 125 | 7-8 | Small appliances, picture frames | $$$$ |
| 150 | 6-7 | Auto sheet metal parts, bookcases | $$$$$ |
| 175 | 5-6 | Clothing, couches, stuffed furniture | $$$$$ |
| 200 | 4-5 | Aluminum table, packaged mattresses | $$$$$$ |
| 250 | 3-4 | Bamboo furniture, mattresses, plasma TV | $$$$$$ |
| 300 | 2-3 | Wood cabinets, tables, chairs | $$$$$$$ |
| 400 | 1-2 | Deer antlers | $$$$$$$$ |
| 500 | < 1 | Ping pong balls, bags of gold dust | $$$$$$$$$ |
Freight Class FAQs
What is Freight Class?
Freight class is the National Motor Freight Classification (NMFC) system used by LTL carriers to categorize shipments. There are 18 classes ranging from 50 (cheapest, densest) to 500 (most expensive, least dense). Class is primarily determined by density (weight per cubic foot), but also considers stowability, handling, and liability.
How is Freight Class Calculated?
Four factors determine freight class: (1) Density - weight per cubic foot (primary factor), (2) Stowability - ease of loading/stacking, (3) Handling - special requirements, and (4) Liability - risk of damage or theft. For most shipments, density is the determining factor.
Why Does Freight Class Matter?
Freight class directly impacts your LTL shipping costs. The difference between Class 70 and Class 100 can be 40-60% more expensive per cwt (hundred weight). Misclassifying your freight results in reclassification fees, billing adjustments, and delayed shipments. Getting it right the first time saves money and hassle.
What is Reclassification?
Carriers measure and reweigh shipments at their facilities. If your stated class doesn't match actual measurements, they'll reclassify it - often to a higher class. This can add 20-100% to your bill as a reclassification fee. Our calculator helps you get it right the first time and avoid these costly surprises.
Common Freight Class Mistakes
- • Not including pallet weight in total weight
- • Measuring incorrectly (always measure longest points)
- • Not accounting for special handling factors
- • Using product weight instead of shipment weight
- • Ignoring packaging that increases dimensions
How to Reduce Your Freight Class
- • Increase density: Pack more weight into smaller space
- • Proper packaging: Avoid oversized packaging
- • Consolidate shipments: More weight = better density
- • Remove excess air: Vacuum seal where possible
- • Choose right pallet: Affects overall density