Convert stones to kilograms quickly and accurately using this free online converter
Used for body weight in the UK and Ireland, where stones remain the everyday unit.
💡 The UK commonly reports body weight in stones and pounds (e.g. 11 stone 4); kilograms are used almost everywhere else.
kg = st × 6.3503
Example: 1 st × 6.3503 = 6.3503 kg
Use stones for UK/Ireland body weight; kilograms for international and medical contexts.
Common uses: body weight in the UK and Ireland.
How do I convert st to kg?
Multiply the value in Stones by 6.3503. For example: 10 st = 63.5029 kg.
When should I use Kilograms instead of Stones?
Use stones for UK/Ireland body weight; kilograms for international and medical contexts.
Is this converter accurate?
Yes. We use internationally recognized conversion factors, updated to current standards.
| Stones (st) | Kilograms (kg) |
|---|---|
| 1 st | 6.3503 kg |
| 2 st | 12.7006 kg |
| 5 st | 31.7515 kg |
| 10 st | 63.5029 kg |
| 20 st | 127.0058 kg |
| 50 st | 317.5145 kg |
| 100 st | 635.029 kg |
| 200 st | 1270.058 kg |
| 500 st | 3175.145 kg |
| 1000 st | 6350.29 kg |