Convert Kilograms to Stones
Convert Kilograms (kg) to Stones (st) instantly and accurately.
Conversion Formula
st = kg × 0.1574730444
About Kilograms
The kilogram (kg) is the SI base unit of mass - the fundamental unit from which all other mass measurements in the metric system are derived. Since 2019 it has been defined by fixing the Planck constant h to exactly 6.62607015 × 10⁻³⁴ J·s, replacing the 130-year-old International Prototype Kilogram (a platinum-iridium cylinder kept in Sèvres, France). The kilogram governs daily life worldwide: body weight in most countries, grocery shopping, luggage allowances, postal rates, freight pricing, and ingredient quantities in cooking all reference kilograms.
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
| Kilograms (kg) | Stones (st) |
|---|---|
| 1 kg | 0.157473 st |
| 2 kg | 0.314946 st |
| 5 kg | 0.787365 st |
| 10 kg | 1.57473 st |
| 25 kg | 3.93683 st |
| 50 kg | 7.87365 st |
| 100 kg | 15.7473 st |