stone to kilograms Converter
Type a value in stone and get the answer in kilograms instantly — or convert the other way. The conversion uses the exact relationship 1 stone = 6.35029 kilograms, the same formula used in textbooks and engineering references.
The stone is the traditional British unit for body weight — Brits say they weigh '11 stone', never '154 pounds'. One stone is exactly 6.35029318 kilograms (14 pounds), so converting is a single multiplication.
How to use
- Type your value into the stone box — the kilograms result updates as you type.
- To go the other direction, type into the kilograms box instead and read the stone result.
- Copy the result with one tap, or scan the reference table below for common values.
Frequently asked questions
How do you convert stone to kilograms?
Multiply the number of stone by 6.35029. For example, 10 stone = 63.5029 kilograms. The converter above does this for you and shows more decimal places than you will ever need.
How many kilograms are in one stone?
Exactly 6.35029 kilograms. This is a fixed definition, not an approximation, so the conversion is exact at any scale.
Is this converter accurate for professional use?
Yes — it uses full double-precision arithmetic and the official stone-to-kilograms factor, so results are reliable for schoolwork, cooking, fitness, travel and technical work.
Can I convert kilograms back to stone?
Yes. The converter is two-way: just type in the second box and the first box updates instantly with the reverse conversion.