Kg to Stone Converter
Convert weight between Kilograms (kg) and Stone (st) instantly. Enter a value in either field below and the converter will update automatically — no need to press a button.
What is a Kilogram?
A kilogram is the base unit of mass in the metric system, used across most of the world for measuring body weight and general everyday items. It is the standard unit in science, medicine, and international trade.
What is a Stone?
A stone is a unit of weight used mainly in the United Kingdom and Ireland, especially for expressing body weight. One stone equals 14 pounds, or approximately 6.35 kilograms.
Kg to Stone Formula
To convert Kilograms to Stone, divide the kg value by 6.35029:
To convert Stone back to Kilograms, multiply by the same factor:
Common Uses
- Expressing body weight in the UK and Ireland
- Boxing and combat sports weight classes
- Horse racing weight requirements (jockey and equipment weight)
- Comparing weight loss or fitness progress across regions
- Medical and fitness apps that display weight in stone
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Frequently Asked Questions
How many stone is 1 kg?
1 kilogram equals approximately 0.1575 stone.
How many kg is 10 stone?
10 stone equals approximately 63.5 kilograms.
Why do the UK and Ireland use stone for body weight?
The stone has been a traditional unit of body weight in the UK and Ireland for centuries and remains commonly used in everyday conversation, medical settings, and sports, even though the metric kilogram is also widely used.