A stone is 14 pounds.
Stones to Long tons Converter — st to long ton
Convert Stone (st) to Long ton (long ton) using the exact conversion factor (1 stone = 0.00625 long ton). See the formula, worked examples, conversion table, history, and common uses.
Stones to Long tons converter
Converter
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Context values
Some unit families need one extra value for a physically accurate result.
A British long ton is 2,240 pounds.
Result = input x 6.35029318 / 1016.046909.
Mass uses the kilogram as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Stones to Long tons
Weight conversions between Stone and Long ton 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. Stone is most often used for body weight reporting in the uk and ireland (e.g. '12 stone 5 pounds').
Formula
long tons = stones × 0.00625
This factor comes from each unit's defined relationship to the category's base unit: 1 stone equals 6.35029318 base units, and 1 long ton equals 1016.0469088 base units, so dividing one by the other gives the direct stone-to-long ton factor of 0.00625.
Simple example
1 st × 0.00625 = 0.00625 long ton
1 stone = 0.00625 long tons.
Real-world example
50 st × 0.00625 = 0.3125 long ton
50 stones = 0.3125 long tons.
Conversion table
| Stone (st) | Long ton (long ton) |
|---|---|
| 1 st | 0.00625 long ton |
| 5 st | 0.03125 long ton |
| 10 st | 0.0625 long ton |
| 25 st | 0.15625 long ton |
| 50 st | 0.3125 long ton |
| 100 st | 0.625 long ton |
Reverse conversion: Long ton to Stone
0.00625 long ton × 160 = 1 st
0.00625 long tons = 1 stone.
stones = long tons × 160
For a page dedicated to this direction, see Long ton to Stone.
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.
Understanding the Long ton (long ton)
A British long ton is 2,240 pounds.
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 long tons are in 1 stone?
1 stone equals 0.00625 long tons, using the exact defined conversion factor rather than an estimate.
How do I convert stone to long ton?
Multiply the stone value by 0.00625. The converter above does this instantly to whatever precision you set.
How do I convert long ton back to stone?
Use the reverse factor: 1 long ton equals 160 stones. You can also use the swap control in the converter above to flip the direction instantly.
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.
What is a long ton?
Long ton (long ton) is a unit of mass/weight.
Is the stone to long ton 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.
Where is the stone still used today?
United Kingdom and Ireland (body weight)