Convert Stones to Newtons
Convert Stones (st) to Newtons (N) instantly and accurately.
Conversion Formula
N = st × 62.27510261
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.
About Newtons
The newton (N) is the SI unit of force, but because weight is technically the gravitational force on a mass, newtons are the scientifically correct unit for what most people call 'weight.' At standard gravity (9.80665 m/s²), 1 kg of mass exerts a weight force of approximately 9.81 N. Scales in physics labs and engineering contexts display results in newtons rather than kilograms. The distinction matters in aerospace and high-altitude contexts: an astronaut's mass stays constant at, say, 70 kg, but their weight in newtons changes from ~686 N on Earth's surface to nearly 0 N in free-fall orbit.
Quick Reference Table
| Stones (st) | Newtons (N) |
|---|---|
| 1 st | 62.2751 N |
| 2 st | 124.55 N |
| 5 st | 311.376 N |
| 10 st | 622.751 N |
| 25 st | 1556.88 N |
| 50 st | 3113.76 N |
| 100 st | 6227.51 N |