WEIGHT UNITS & FREIGHT RATING
Hundredweight (CWT)
Hundredweight is a weight unit whose definition must be specified. A US short hundredweight is 100 pounds; a long or imperial hundredweight is 112 pounds.
HUNDREDWEIGHT IN PRACTICE
- Confirm the unitIdentify short or long hundredweight.
- Convert the weightDivide pounds by the stated pounds per CWT.
- Apply the tariffCheck rating and additional-charge rules.
Use the agreed units, actual records and approved procedures for your operation.
A WORKED EXAMPLE
500 lb ÷ 100 × $15 = $75.
Assume a hypothetical US rate of $15 per short CWT with no minimum, rounding or other charges in this simplified example. Five hundred pounds equals five short CWT, producing $75. Using a 112-pound definition would be a different unit calculation, so the tariff must state the intended basis.
WHAT THIS MEANS FOR YOUR QUOTE
Agree the requirement before comparing quotes
Use the actual shipment, stock and service requirements. Record the billing unit, included work and responsibility for exceptions.
A LITTLE MORE CONTEXT
Questions about Hundredweight
Does CWT always equal 100 lb?
No. Distinguish the 100-pound short and 112-pound long units.
Is CWT a measure of volume?
No. It is a weight unit.
Does multiplying by the rate give every final invoice?
No. Check the actual rating and additional-charge rules.
Source & example notes
NIST: tables of weights and measures.
Sources provide background on the linked topic. Product documentation describes a particular implementation; confirm the rules, contract and procedures that apply to your operation.
Quantities, costs and scenarios are illustrative, not operating targets, approved handling instructions or guarantees. Source guidance reviewed 22 October 2026.
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