How to Calculate CWT in Freight

Written by bill brown
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How to Calculate CWT in Freight
Heavy freight is calculated by the CWT or hundredweight. (truck image by timur1970 from

When shipping large amounts of freight, you will often need to know the hundredweight of your shipment. A hundredweight, abbreviated CWT, comes in three sizes: short, long and metric. A short CWT is equal to 45.4kg. and is used in the United States. A long CWT is equal to 50.8kg. and is used in the United Kingdom. A metric CWT of 50 kilograms (49.9kg.) is used in some European countries.

Skill level:

Things you need

  • Scale
  • Calculator

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  1. 1

    Weigh your freight on the scale. If you are weighing freight loaded onto a vehicle, you must weigh the vehicle empty first, and subtract that weight (the tare weight) from the weight of the loaded vehicle to get the weight of your freight.

  2. 2

    Divide the weight by 100 to get the weight in short CWT. For example, if your freight weighs 680kg., that converts to 15 short CWT.

  3. 3

    Divide the weight by 112 to get the weight in long CWT. In this example, 680kg. of freight converts to 13.39 long CWT.

  4. 4

    Divide the weight by 110 to get the weight in metric CWT. Freight weighing 680kg. would be 13.64 metric CWT.

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