Stone to Kilograms Converter
Type a number to convert stone to kilograms. The result updates as you type, and you can swap the units to convert back.
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The formula
kilograms = stone x 6.3503
How to convert stone to kilograms
To convert stone to kilograms, multiply by 6.3503. One stone equals 6.3503 kilograms, and one kilogram equals 0.15747 stone.
A worked example
12 stone is 76.204 kilograms.
Quick conversion table
| Stone | Kilograms |
|---|---|
| 6 st | 38.102 kg |
| 7 st | 44.452 kg |
| 8 st | 50.802 kg |
| 9 st | 57.153 kg |
| 10 st | 63.503 kg |
| 11 st | 69.853 kg |
| 12 st | 76.204 kg |
| 13 st | 82.554 kg |
| 14 st | 88.904 kg |
| 15 st | 95.254 kg |
| 16 st | 101.6 kg |
| 18 st | 114.31 kg |
| 20 st | 127.01 kg |
And the other way: kilograms to stone
| Kilograms | Stone |
|---|---|
| 1 kg | 0.15747 st |
| 2 kg | 0.31495 st |
| 5 kg | 0.78737 st |
| 10 kg | 1.5747 st |
| 15 kg | 2.3621 st |
| 20 kg | 3.1495 st |
| 25 kg | 3.9368 st |
| 30 kg | 4.7242 st |
| 40 kg | 6.2989 st |
| 50 kg | 7.8737 st |
| 60 kg | 9.4484 st |
| 70 kg | 11.023 st |
| 75 kg | 11.81 st |
| 80 kg | 12.598 st |
| 90 kg | 14.173 st |
| 100 kg | 15.747 st |
| 120 kg | 18.897 st |
| 150 kg | 23.621 st |
When you will need it
Stone is still used for body weight in the UK and Ireland. Medical forms and international sites usually want kilograms.
One stone is 14 pounds, or about 6.35 kg.
Stone to Kilograms Converter: frequently asked questions
How many kilograms are in one stone?
One stone is 6.3503 kilograms.
How many stone are in one kilogram?
One kilogram is 0.15747 stone.
Is this stone to kilograms conversion exact?
The factor is exact where the units are defined that way, and we show the result rounded for readability.
How exact is the conversion?
It uses the internationally agreed definitions, and rounds only the number you see.
Is what I enter in this converter saved or sent anywhere?
No. The calculation runs in your browser, so what you enter is not sent to our servers. We only count, anonymously, whether a tool ran successfully.
Is this converter free to use?
Yes. It is free, needs no sign-up and has no usage limit.
Last reviewed: October 3, 2026