How to convert stones to kilograms
Stones and Kilograms both measure weight, so converting is a single multiplication. One st equals 6.35029 kg, so you multiply your stones value by 6.35029.
Formula: kilograms = stones × 6.35029. For example, 10 st = 63.5029 kg.
Stones to Kilograms conversion table
| Stones (st) | Kilograms (kg) |
|---|---|
| 1 | 6.35029 |
| 2 | 12.70058 |
| 5 | 31.75145 |
| 10 | 63.5029 |
| 25 | 158.75725 |
| 50 | 317.5145 |
| 100 | 635.029 |
| 1,000 | 6,350.29 |
Stones and Kilograms explained
Stones (st): Fourteen pounds (6.35 kg), used for body weight in the UK and Ireland.
Kilograms (kg): One thousand grams, the SI base unit of mass and the everyday metric weight.
When you'd convert stones to kilograms
You'll convert stones to kilograms whenever a measurement is given in one unit but you need it in the other — comparing stones and kilograms figures across regions, following a recipe or spec, or double-checking a number. Because 1 st is exactly 6.35029 kg, the result is precise every time.
Frequently asked questions
How many kilograms are in a stone?
One st equals 6.35029 kg. Multiply your stones figure by 6.35029 to get kilograms.
What is the formula to convert stones to kilograms?
kilograms = stones × 6.35029. The factor 6.35029 is exact.
What is 2 stones in kilograms?
2 st = 12.70058 kg. You can enter any value in the converter above to get an instant result.
Is this Stones to Kilograms converter accurate?
Yes. It uses the standard conversion factor (1 st = 6.35029 kg) defined by BIPM — SI Brochure (definition of the kilogram), so results are exact to several decimal places.