Convert stones to kilograms
Enter a value in stones (st) to get kilograms (kg). One stone is 6.3503 kilograms; one kilogram is 0.157473 stones.
How to use the Stone to kilogram
- Type the number of stones.
- Click Convert.
- Read the result in kilograms, plus the same value in every other weight & mass unit.
st to kg formula
kilograms = stones × 6.3503. To go the other way, stones = kilograms × 0.157473 (see kilograms to stones).
Worked example
12 st × 6.3503 = 76.2035 kg.
Stones to kilograms conversion table
| Stones | Kilograms |
|---|---|
| 0.1 st | 0.635029 kg |
| 0.5 st | 3.1751 kg |
| 1 st | 6.3503 kg |
| 2 st | 12.7006 kg |
| 3 st | 19.0509 kg |
| 5 st | 31.7515 kg |
| 10 st | 63.5029 kg |
| 20 st | 127.0059 kg |
| 25 st | 158.7573 kg |
| 50 st | 317.5147 kg |
| 100 st | 635.0293 kg |
| 250 st | 1,587.57 kg |
| 500 st | 3,175.15 kg |
| 1,000 st | 6,350.29 kg |
About the stone
14 pounds, about 6.35 kg. Still the customary unit for body weight in the UK and Ireland.
About the kilogram
The SI base unit of mass, defined since 2019 via the Planck constant.
Related conversions
Frequently asked questions
How many kilograms in a stone?
6.3503 kilograms.
How many stones in a kilogram?
0.157473 stones.
Is the factor exact?
The factor 6.3503 is derived from the units' exact definitions; only the display is rounded.
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Last updated 2026-09-23.