FREIGHTCLASS

Freight class chart

Eighteen bands, from the densest and cheapest at class 50 to the lightest and most expensive at class 500.

ClassDensity, lb per cubic foot
5050 lb/ft³ and over
5535 to 50 lb/ft³
6030 to 35 lb/ft³
6522.5 to 30 lb/ft³
7015 to 22.5 lb/ft³
77.513.5 to 15 lb/ft³
8512 to 13.5 lb/ft³
92.510.5 to 12 lb/ft³
1009 to 10.5 lb/ft³
1108 to 9 lb/ft³
1257 to 8 lb/ft³
1506 to 7 lb/ft³
1755 to 6 lb/ft³
2004 to 5 lb/ft³
2503 to 4 lb/ft³
3002 to 3 lb/ft³
4001 to 2 lb/ft³
500under 1 lb/ft³
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Reading the chart

Find your density in the right-hand column and the class is on the left. Each band is exclusive at the top: a density of exactly 8.0 is class 110, not 125.

If you do not know your density yet, the calculator works it out from dimensions and weight.