Stone (st) to Kilograms (kg) Converter
Enter a value to instantly convert between weight units.
1 Stone = 6.3503 Kilogram
Key Formulas
Kilogram → Pound
lb = kg × 2.20462Pound → Kilogram
kg = lb × 0.453592Gram → Ounce
oz = g × 0.035274Ounce → Gram
g = oz × 28.3495Formula
kg = st × 6.35029Body weight in the UK and Ireland is sometimes discussed in stone, while forms and clinical records may request kilograms. One stone equals 14 international avoirdupois pounds, so one stone is exactly 6.35029318 kilograms.
Source: NIST SP 811, Appendix B.9
Reviewed by the Convert Calc editorial team · Last reviewed: · see our methodology
Frequently Asked Questions
Real-World Examples
A UK person saying 'I weigh 12 stone' is 76.2 kg — useful for medical forms that request metric weight.
12 st = 76.2 kg
A weight chart showing 15 stone as a goal translates to 95.25 kg on a digital scale.
15 st = 95.25 kg
A person who weighs 10 stone wants to know their weight in kg for a travel insurance form — 63.5 kg.
10 st = 63.5 kg
A weight stated as 18 stone converts to 114.31 kg for a form that requires kilograms.
18 st = 114.31 kg