A US short hundredweight is 100 pounds.
US hundredweights to Pounds Converter — cwt to lb
Convert US hundredweight (cwt) to Pound (lb) using the exact conversion factor (1 us hundredweight = 100 pound). See the formula, worked examples, conversion table, history, and common uses.
US hundredweights to Pounds converter
Converter
Mass/Weight Converter
Convert SI mass, imperial weight, jewelry, atomic, and astronomy mass units.
Context values
Some unit families need one extra value for a physically accurate result.
An avoirdupois pound is exactly 0.45359237 kilograms.
Result = input x 45.359237 / 0.45359237.
Mass uses the kilogram as the base unit.
Reserved above the conversion cards and below the converter.
About Converting US hundredweights to Pounds
Weight conversions between US hundredweight and Pound come up constantly in everyday commerce, shipping, and cooking, since US packaging is usually labeled in pounds while most of the rest of the world uses kilograms. Specifically: A US short hundredweight is 100 pounds, and an avoirdupois pound is exactly 0.45359237 kilograms.
Formula
pounds = us hundredweights × 100
This factor comes from each unit's defined relationship to the category's base unit: 1 us hundredweight equals 45.359237 base units, and 1 pound equals 0.45359237 base units, so dividing one by the other gives the direct us hundredweight-to-pound factor of 100.
Simple example
1 cwt × 100 = 100 lb
1 us hundredweight = 100 pounds.
Real-world example
50 cwt × 100 = 5,000 lb
50 us hundredweights = 5,000 pounds.
Conversion table
| US hundredweight (cwt) | Pound (lb) |
|---|---|
| 1 cwt | 100 lb |
| 5 cwt | 500 lb |
| 10 cwt | 1,000 lb |
| 25 cwt | 2,500 lb |
| 50 cwt | 5,000 lb |
| 100 cwt | 10,000 lb |
Reverse conversion: Pound to US hundredweight
100 lb × 0.01 = 1 cwt
100 pounds = 1 us hundredweight.
us hundredweights = pounds × 0.01
For a page dedicated to this direction, see Pound to US hundredweight.
Understanding the US hundredweight (cwt)
A US short hundredweight is 100 pounds.
Understanding the Pound
Pound (lb) measures mass. The avoirdupois pound is legally defined as exactly 0.45359237 kilograms, fixed by international treaty in 1959. It is classified as a US/imperial customary unit.
Where it's used: United States (primary mass/weight unit) United Kingdom (informal and some retail use) Various Caribbean and Pacific territories with historical UK/US ties
Pound-mass vs. pound-force. This page converts pound-mass (lbm), a unit of mass. Pound-force (lbf) is a separate unit measuring the force gravity exerts on one pound-mass, used in engineering contexts like pounds per square inch.
Uses of the Pound today
- Body weight and food retail packaging in the United States
- Postal, parcel, and freight weight in US shipping and logistics
- Pound-force (lbf) and its derivatives (psi, foot-pounds) in US engineering and aerospace
History of the Pound
Unlike the kilogram's single documented birth in revolutionary France, the pound's history is a long, layered narrowing of competing regional standards. The avoirdupois pound — ancestor of today's standard — emerged among London merchants in the early 14th century (recorded use around 1303), used for weighing wool and other bulk goods under the system merchants called 'avoir de pois,' Old French for 'goods of weight.' Its 16-ounce structure suited large-scale trade better than the 12-ounce troy pound used for precious metals.
Wool merchants used a related 'wool pound' of about 6,992 grains — close enough to 7,000 that Elizabeth I's government formally fixed the avoirdupois pound at exactly 7,000 grains in 1588, the value still used today. Britain and the US then refined their physical standards separately over the following centuries, leaving small discrepancies between them.
Those discrepancies were resolved on 1 July 1959, when the US, UK, Canada, Australia, New Zealand, and South Africa signed the International Yard and Pound Agreement, fixing the pound at exactly 0.45359237 kg and the yard at exactly 0.9144 m. The US National Bureau of Standards (now NIST) adopted the value immediately; the UK followed via its Weights and Measures Act 1963 — the value used by virtually every country today.
Historical origin. Pound was not the invention of a single named person; it developed through the process described above.
Pound — sources
- NIST — International yard and pound, Federal Register notice (1959) — Official 1959 refinement of the yard and pound values adopted by the US National Bureau of Standards.
- Encyclopaedia Britannica — 'Pound (unit of weight)' — History of the Tower, troy, and avoirdupois pounds and their standardization in England.
- UK Weights and Measures Act 1963, s.1(1) — Statutory UK definition of the pound as exactly 0.45359237 kilogram.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many pounds are in 1 us hundredweight?
1 us hundredweight equals 100 pounds, using the exact defined conversion factor rather than an estimate.
How do I convert us hundredweight to pound?
Multiply the us hundredweight value by 100. The converter above does this instantly to whatever precision you set.
How do I convert pound back to us hundredweight?
Use the reverse factor: 1 pound equals 0.01 us hundredweights. You can also use the swap control in the converter above to flip the direction instantly.
What is a us hundredweight?
US hundredweight (cwt) is a unit of mass/weight.
What is a pound?
Pound (lb) measures mass. The avoirdupois pound is legally defined as exactly 0.45359237 kilograms, fixed by international treaty in 1959. It is classified as a US/imperial customary unit.
Is the us hundredweight to pound conversion exact?
Yes. The avoirdupois pound is legally defined as exactly 0.45359237 kilograms, fixed by international treaty in 1959. That fixed definition is what the converter above uses, so any rounding you see is a display choice, not a limitation of the math.
What is the difference between pound-mass vs. pound-force?
This page converts pound-mass (lbm), a unit of mass. Pound-force (lbf) is a separate unit measuring the force gravity exerts on one pound-mass, used in engineering contexts like pounds per square inch.