Let's start with an example shipment. A 40" by 48" pallet is stacked with boxes of products 48" high. The pallet and its contents weighs a total of 425 lbs.

First the volume is calculated by multipled the dimensions together:

40 x 48 x 48 = 92160 cubic inches

Now the volume is converted from cubic inches to feet:

92160 / 1728 = 53.33 cubic feet

To get the density we divide the weight by the volume:

425 / 53.33 = 7.97 pounds per cubic foot

The density is looked up on the table at the left. The density is above 7 but less than 8, so the class is 125.

Density | NMFC Freight Class |
---|---|

50 | 50 |

35 | 55 |

30 | 60 |

22.5 | 65 |

15 | 70 |

13 | 77.5 |

12 | 85 |

10.5 | 92.5 |

9 | 100 |

8 | 110 |

7 | 125 |

6 | 150 |

5 | 175 |

4 | 200 |

3 | 250 |

2 | 300 |

1 | 400 |

<1 | 500 |

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