Work out stone to kilogram instantly with clear inputs, formula shown and shareable results.
Converting Stones to Kilograms is a single multiplication: one st equals 6.35029318 kg, so the amount is multiplied by that factor. Switching the direction divides by the same factor instead. This factor is an exact definition, not a rounded approximation, so the conversion is precise at any scale. One stone is 14 pounds, so 14 × 0.45359237 = 6.35029318 kg exactly.
Stones → Kilograms
kg = st × 6.35029318
Kilograms → Stones
st = kg ÷ 6.35029318
One st is 6.35029318 kg. That figure is exact by definition.
Divide by 6.35029318 instead of multiplying — or just switch the direction selector, which does it for you.