Example: 12 st 7 lb. Keep extra pounds under 14 or add to stones first.
Whole stones and additional pounds (0–13 typical)—total mass in kilograms (international avoirdupois).
Example: 12 st 7 lb. Keep extra pounds under 14 or add to stones first.
This page uses 1 stone = 14 lb and the international avoirdupois pound 1 lb = 0.45359237 kg. Pounds must satisfy 0 ≤ lb < 14 (carry extra pounds into stones first if needed). Total mass is (stones×14 + pounds) × 0.45359237.
This calculator uses plain decimal numbers. If a result looks wrong, check whether you used a comma instead of a dot (or vice versa) where the field expects one.