Kilograms (kg) to Stone (st) Converter
Enter a value to instantly convert between weight units.
1 Kilogram = 0.1575 Stone
Key Formulas
Kilogram → Pound
lb = kg × 2.20462Pound → Kilogram
kg = lb × 0.453592Gram → Ounce
oz = g × 0.035274Ounce → Gram
g = oz × 28.3495Formula
st = kg × 0.157473The stone is a traditional British unit of weight, equal to 14 pounds or 6.35 kilograms. It's still the everyday unit for body weight in the UK, Ireland, and some other Commonwealth countries — you'll see weight listed as '12 stone 6' rather than '78 kg'. While kilograms are increasingly common in medical settings, stone remains what people use when talking about their weight at home.
Source: NIST SP 811, Table B.8
Frequently Asked Questions
Real-World Examples
A UK doctor's scale displays 70 kg — the patient thinks in stone, so 11 stone is the conversational equivalent.
70 kg = 11 st
A weight loss program tracking to 100 kg shows about 15.75 stone — the milestone that reads as 'under 16 stone' on the progress chart.
100 kg = 15.75 st
A person weighing exactly 10 stone wants to know their metric weight — 10 st × 6.35 kg/st = 63.5 kg.
63.5 kg = 10 st
A boxer making 90 kg weight class needs to know that in stone — 14 stone 2.4 lbs roughly.
90 kg = 14.17 st