Stone to KG Converter
Convert stone (st) to kilograms (kg) instantly. Type a value — the result updates as you type, and the swap button converts the other way.
Stone to kg formula
kg = st × 6.35029318
1 stone = 6.35 kilograms · 1 kilogram = 0.1575 stone
To convert stone to kilograms, multiply the value by 6.35029318. For example, 11 st:
kg = 11 × 6.35029318kg = 69.853225
So 11 st = 69.85 kg.
Mental math shortcut
Quick mental estimate: multiply by 6.4. For 11 st that gives about 70.4 kg — within 1% of the exact answer. Use the exact formula when precision matters.
Stone to kg conversion table
kg back to Stone
The same values converted the other way, rounded for everyday use:
| Kilograms | Stone |
|---|---|
| 6.35 kg | 1 st |
| 31.75 kg | 5 st |
| 50.8 kg | 8 st |
| 57.15 kg | 9 st |
| 63.5 kg | 10 st |
| 69.85 kg | 11 st |
| 76.2 kg | 12 st |
| 82.55 kg | 13 st |
About the units
Stone (st)
A stone is 14 pounds (about 6.35 kg). It is commonly used in the UK and Ireland for body weight.
Kilograms (kg)
The kilogram is the SI base unit of mass. 1 kg ≈ 2.2046 lb; it is used for body weight and groceries in most countries.
Frequently asked questions
How many kilograms are in a stone?
One stone equals 6.35 kilograms.
What is 11 Stone in kg?
11 st = 69.85 kg.
How do I convert kg back to Stone?
Divide the kilograms by 6.35029318. Or use the KG to Stone converter.