Conversion formula
The conversion is the same for one stone or many stones: multiply stones by 6.35029318.
Exact values used
- kg = stones x 6.35029318
- 1 stone = 14 pounds
- 1 pound = 0.45359237 kg
Plural stone values
Stones to Kg Calculator
Convert any number of stones into kilograms. This page focuses on whole and decimal stone values used in UK weight conversion.
Stones to Kilograms
Convert stones (st) to kilograms (kg) instantly.
0.1 st0.64 kg
0.5 st3.18 kg
1 st6.35 kg
5 st31.75 kg
10 st63.5 kg
50 st317.51 kg
Related weight converters
Examples
| Input | Calculation | Result |
|---|---|---|
| 6 stones | 6 x 6.35029318 | 38.10 kg |
| 10.5 stones | 10.5 x 6.35029318 | 66.68 kg |
| 18 stones | 18 x 6.35029318 | 114.31 kg |
Common stones to kg chart
| Stones | Kilograms |
|---|---|
| 7 st | 44.45 kg |
| 8 st | 50.80 kg |
| 9 st | 57.15 kg |
| 10 st | 63.50 kg |
| 11 st | 69.85 kg |
| 12 st | 76.20 kg |
| 13 st | 82.55 kg |
| 14 st | 88.90 kg |
| 15 st | 95.25 kg |
FAQs
How many kg are in 9 stone?
Nine stone is 57.15263862 kg, normally rounded to 57.2 kg.
How do I convert decimal stones to kg?
Use the same formula: multiply the decimal stone value by 6.35029318.
Is stones plural of stone for weight?
In everyday UK English, people may say stone or stones. In weight notation, stone is often used for both singular and plural values.