A US short hundredweight is 100 pounds.
US hundredweights to Stones Converter — cwt to st
Convert US hundredweight (cwt) to Stone (st) using the exact conversion factor (1 us hundredweight = 7.142857143 stone). See the formula, worked examples, conversion table, history, and common uses.
US hundredweights to Stones 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.
A stone is 14 pounds.
Result = input x 45.359237 / 6.35029318.
Mass uses the kilogram as the base unit.
Reserved above the conversion cards and below the converter.
About Converting US hundredweights to Stones
Weight conversions between US hundredweight and Stone 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 a stone is 14 pounds.
Formula
stones = us hundredweights × 7.14285714286
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 stone equals 6.35029318 base units, so dividing one by the other gives the direct us hundredweight-to-stone factor of 7.14285714286.
Simple example
1 cwt × 7.142857143 = 7.142857143 st
1 us hundredweight = 7.142857143 stones.
Real-world example
50 cwt × 7.142857143 = 357.1428571 st
50 us hundredweights = 357.1428571 stones.
Conversion table
| US hundredweight (cwt) | Stone (st) |
|---|---|
| 1 cwt | 7.142857143 st |
| 5 cwt | 35.71428571 st |
| 10 cwt | 71.42857143 st |
| 25 cwt | 178.5714286 st |
| 50 cwt | 357.1428571 st |
| 100 cwt | 714.2857143 st |
Reverse conversion: Stone to US hundredweight
7.142857143 st × 0.14 = 1 cwt
7.142857143 stones = 1 us hundredweights.
us hundredweights = stones × 0.14
For a page dedicated to this direction, see Stone to US hundredweight.
Understanding the US hundredweight (cwt)
A US short hundredweight is 100 pounds.
Understanding the Stone
Stone (st) measures mass. A stone is 14 pounds: exactly 6.35029318 kilograms. It is classified as a UK customary unit.
Where it's used: United Kingdom and Ireland (body weight)
Uses of the Stone today
- Body weight reporting in the UK and Ireland (e.g. '12 stone 5 pounds')
- Historical wool and agricultural produce weighing
History of the Stone
The stone dates to medieval England as a general-purpose weight unit, historically varying by region and commodity (a 'stone' of wool differed from a 'stone' of meat) before settling on 14 pounds for general use. It remains in everyday use for body weight in the UK and Ireland, unlike most other English customary units which have been replaced or supplemented by metric measures.
Historical origin. Stone was not the invention of a single named person; it developed through the process described above.
Stone — sources
- UK Weights and Measures Act 1985 — Confirms the stone (14 lb) as a legally recognized UK unit for body weight.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many stones are in 1 us hundredweight?
1 us hundredweight equals 7.142857143 stones, using the exact defined conversion factor rather than an estimate.
How do I convert us hundredweight to stone?
Multiply the us hundredweight value by 7.142857143. The converter above does this instantly to whatever precision you set.
How do I convert stone back to us hundredweight?
Use the reverse factor: 1 stone equals 0.14 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 stone?
Stone (st) measures mass. A stone is 14 pounds: exactly 6.35029318 kilograms. It is classified as a UK customary unit.
Is the us hundredweight to stone conversion exact?
Yes. A stone is 14 pounds: exactly 6.35029318 kilograms. That fixed definition is what the converter above uses, so any rounding you see is a display choice, not a limitation of the math.