Stones to Kilograms — Converting to Metric
In Ireland and parts of the British Isles, body weight has traditionally been expressed in stones and pounds. One stone equals 14 pounds and is equivalent to approximately 6.35029 kilograms. When medical professionals, gym apps, or international services ask for weight in kilograms, this converter makes the transition easy.
To convert stones and pounds to kilograms: first calculate total pounds (stones × 14 + extra pounds), then multiply by 0.453592. The result is your weight in kilograms — the universal metric unit used in medicine, sport science, and international commerce.
Common references: 10 st 0 lb = 63.5 kg; 11 st 0 lb = 69.85 kg; 12 st 0 lb = 76.2 kg; 13 st 0 lb = 82.55 kg; 14 st 0 lb = 88.9 kg.
Formula
First calculate total pounds: total lb = (stones × 14) + extra lb. Then: kg = total lb × 0.453592.
Stones and Pounds to Kilograms Reference Table
- 8 st 0 lb = 50.80 kg
- 9 st 0 lb = 57.15 kg
- 10 st 0 lb = 63.50 kg
- 11 st 0 lb = 69.85 kg
- 12 st 0 lb = 76.20 kg
- 13 st 0 lb = 82.55 kg
- 14 st 0 lb = 88.90 kg
- 15 st 0 lb = 95.25 kg
Why the Stone Is Still Used in Some Regions
Despite the widespread adoption of the metric system, the stone has remained culturally embedded for personal body weight in some regions — particularly in everyday conversation. Clinical settings and medical records have moved to kilograms, but many people still think of their weight in stones and pounds. This converter bridges both worlds, making it easy to communicate weight accurately in any context.
Stones to Other Units
In addition to kilograms, you may sometimes need to express your weight in pounds only. Since 1 stone = 14 pounds, multiply the stone value by 14 and add any remaining pounds. For example, 12 st 7 lb = (12 × 14) + 7 = 175 lb = 79.38 kg.
Related Calculators
- Kilograms to Stones — Convert kg to stones and pounds.
- Kilograms to Pounds — Convert kg to lb and stones & pounds.
- Pounds to Kilograms — Convert lb to kg and stones.