Convert stone to kilograms
Enter a value in stone to convert it to kilograms.
stone to kilograms reference
| stone | kilograms |
|---|---|
| 1 st | 6.3503 kg |
| 2 st | 12.7006 kg |
| 5 st | 31.7515 kg |
| 10 st | 63.5029 kg |
| 25 st | 158.7573 kg |
| 50 st | 317.5147 kg |
| 100 st | 635.0293 kg |
The conversion factor
One stone is 6.35029318 kilograms. So to convert, multiply your figure in stone by 6.35029318. To go the other way, multiply kilograms by 0.15747304, or use the kilograms to stone converter.
Doing it in your head
For a quick estimate, round the factor: roughly "times 6". Use the exact converter above when the number matters.
Where this conversion comes up
Recipes, shipping and luggage limits, body weight, and nutrition labels.
See the common unit conversions cheat sheet for the factors worth memorising.
Related tools
Frequently asked questions
How many kilograms are in a stone?
1 stone = 6.350293 kilograms.
What is the formula to convert stone to kilograms?
Multiply the number of stone by 6.35029318. To go back the other way, multiply kilograms by 0.15747304.
What is 10 stone in kilograms?
10 stone = 63.5029 kilograms. The reference table below lists more common values.
Is this converter accurate?
It uses the internationally defined conversion factors and computes at full floating-point precision, then rounds only the displayed result. For everyday purposes it is exact; for legal, engineering or scientific work, confirm the required number of significant figures.
Does it work offline?
Yes. The conversion runs in your browser with no server call, so it keeps working with no connection, and nothing you enter is uploaded.
Last reviewed: September 2026. Figures and formulas are checked against their published sources; see the site's data notes.