Convert Slugs to Stones
Convert Slugs (slug) to Stones (st) instantly and accurately.
Conversion Formula
st = slug × 2.298146325
About Slugs
A slug is a unit of mass in the British imperial and US customary foot-pound-second (FPS) engineering system, equal to the mass that accelerates at 1 foot per second squared under a force of 1 pound-force - approximately 14.594 kg. The slug was introduced to simplify dynamics calculations in engineering: using slugs ensures that F = ma holds without unit conversion factors when force is in pounds-force and acceleration in ft/s². Aerospace engineers and mechanical engineers working in US customary units use slugs for aircraft mass, structural dynamics, and ballistic calculations.
About Stones
A stone (st) equals 14 pounds or approximately 6.350 kg. It is the standard unit for expressing human body weight in the United Kingdom and Ireland, where a person will say they weigh '11 stone 4' (meaning 11 stone and 4 pounds, or 158 lb / 71.7 kg). Despite the UK's official adoption of the metric system, stones remain the dominant unit for personal body weight on British bathroom scales, in doctors' offices, and in everyday conversation. British newspapers and sports reports routinely describe athletes' weights in stones and pounds.
Quick Reference Table
| Slugs (slug) | Stones (st) |
|---|---|
| 1 slug | 2.29815 st |
| 2 slug | 4.59629 st |
| 5 slug | 11.4907 st |
| 10 slug | 22.9815 st |
| 25 slug | 57.4537 st |
| 50 slug | 114.907 st |
| 100 slug | 229.815 st |