Stone to Kilograms Converter
Stone to Kilograms Converter
The stone is a traditional British and Irish unit still used colloquially for body weight (a common way to state adult weight in the UK/Ireland, e.g. "12 stone 4"), even though the UK officially uses metric units for most other purposes.
This tool goes beyond stone and kilograms: the "From" and "To" dropdowns cover the full range of mass units, including pounds, ounces, and specialized measures.
- Conversion factor: 1 stone = exactly 6.35029318 kilograms (14 avoirdupois pounds).
- Fully flexible: change either dropdown to convert between any two of the 25+ supported mass units.
- Stone is rarely subdivided by decimals: UK body weight is traditionally expressed as "X stone Y pounds" (e.g. 12 stone 4 lb) rather than a decimal stone value — convert the pounds portion separately if needed.
How many kilograms are in a stone?
1 stone equals exactly 6.35029318 kilograms. To convert, multiply the stone value by 6.35029.
How many pounds are in a stone?
There are exactly 14 avoirdupois pounds in 1 stone — this is a fixed, unchanging relationship.
Stone to Kilograms Converter
The stone is a traditional British and Irish unit still used colloquially for body weight (a common way to state adult weight in the UK/Ireland, e.g. "12 stone 4"), even though the UK officially uses metric units for most other purposes.
This tool goes beyond stone and kilograms: the "From" and "To" dropdowns cover the full range of mass units, including pounds, ounces, and specialized measures.
- Conversion factor: 1 stone = exactly 6.35029318 kilograms (14 avoirdupois pounds).
- Fully flexible: change either dropdown to convert between any two of the 25+ supported mass units.
- Stone is rarely subdivided by decimals: UK body weight is traditionally expressed as "X stone Y pounds" (e.g. 12 stone 4 lb) rather than a decimal stone value — convert the pounds portion separately if needed.
How many kilograms are in a stone?
1 stone equals exactly 6.35029318 kilograms. To convert, multiply the stone value by 6.35029.
How many pounds are in a stone?
There are exactly 14 avoirdupois pounds in 1 stone — this is a fixed, unchanging relationship.