Convert Stones to Kilograms
Use our free online converter to easily convert from Stones to Kilograms. Get accurate conversions instantly.
Converting Stones to Kilograms
Converting stones to kilograms is essential for people from the UK and Ireland when traveling to countries that use the metric system or when interpreting medical and fitness information.
Mathematical Relationship
The mathematical relation between stones and kilograms is: 1 stone = 6.35029 kilograms. To convert a mass in stones to kilograms, multiply the stone value by 6.35029.
Common Conversion Values
| Stones | Kilograms |
|---|---|
| 8 | 50.8 |
| 10 | 63.5 |
| 12 | 76.2 |
| 14 | 88.9 |
| 20 | 127 |
Unit Definitions
Stones
The stone (symbol: st) is a unit of mass in the imperial system equal to 14 pounds. It is primarily used in the United Kingdom and Ireland for measuring human body weight.
Kilograms
The kilogram (symbol: kg) is the base unit of mass in the International System of Units (SI). Since 2019, it has been defined in terms of the Planck constant, which relates a photon's energy to its frequency.
Historical Context
The stone has been used in Britain since the Middle Ages, while the kilogram was established during the French Revolution as part of the metric system. The precise relationship between them was established when the pound was defined in terms of the kilogram in 1959.