A slug is an imperial mass unit.
Slugs to Stones Converter — slug to st
Convert Slug (slug) to Stone (st) using the exact conversion factor (1 slug = 2.298146325 stone). See the formula, worked examples, conversion table, history, and common uses.
Slugs 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 14.59390294 / 6.35029318.
Mass uses the kilogram as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Slugs to Stones
Weight conversions between Slug 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 slug is an imperial mass unit, and a stone is 14 pounds.
Formula
stones = slugs × 2.29814632546
This factor comes from each unit's defined relationship to the category's base unit: 1 slug equals 14.5939029372 base units, and 1 stone equals 6.35029318 base units, so dividing one by the other gives the direct slug-to-stone factor of 2.29814632546.
Simple example
1 slug × 2.298146325 = 2.298146325 st
1 slug = 2.298146325 stones.
Real-world example
50 slug × 2.298146325 = 114.9073163 st
50 slugs = 114.9073163 stones.
Conversion table
| Slug (slug) | Stone (st) |
|---|---|
| 1 slug | 2.298146325 st |
| 5 slug | 11.49073163 st |
| 10 slug | 22.98146325 st |
| 25 slug | 57.45365814 st |
| 50 slug | 114.9073163 st |
| 100 slug | 229.8146325 st |
Reverse conversion: Stone to Slug
2.298146325 st × 0.4351333024 = 0.9999999998 slug
2.298146325 stones = 0.9999999998 slugs.
slugs = stones × 0.435133302402
For a page dedicated to this direction, see Stone to Slug.
Understanding the Slug (slug)
A slug is an imperial mass unit.
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 slug?
1 slug equals 2.298146325 stones, using the exact defined conversion factor rather than an estimate.
How do I convert slug to stone?
Multiply the slug value by 2.298146325. The converter above does this instantly to whatever precision you set.
How do I convert stone back to slug?
Use the reverse factor: 1 stone equals 0.4351333024 slugs. You can also use the swap control in the converter above to flip the direction instantly.
What is a slug?
Slug (slug) 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 slug 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.