Stone to Kilograms Converter
Multiply stone by 6.35029318 to get kilograms. A stone is exactly 14 pounds.
Formula
1 st = 6.35029318 kg
kilograms = stone × 6.35029318
Worked example
Convert 12.5 stone to kilograms
- Multiply by 6.35029318
- 12.5 × 6.35029318 = 79.3787
12.5 st = 79.3787 kg
Good to know
Weights in the UK and Ireland are often given as stones and pounds, such as 12 st 7 lb. Convert that to decimal stone first — 7 lb is half a stone, so 12 st 7 lb = 12.5 st — then multiply: 12.5 × 6.35029318 = 79.38 kg. For other pound values divide by 14: 3 lb = 0.214 st.
Conversion table
| Stone (st) | Kilograms (kg) |
|---|---|
| 5 | 31.7515 |
| 6 | 38.1018 |
| 7 | 44.4521 |
| 8 | 50.8023 |
| 9 | 57.1526 |
| 10 | 63.5029 |
| 11 | 69.8532 |
| 12 | 76.2035 |
| 13 | 82.5538 |
| 14 | 88.9041 |
| 15 | 95.2544 |
| 16 | 101.605 |
| 18 | 114.305 |
| 20 | 127.006 |
About these units
- Stone (st)
- Exactly 14 pounds (6.35029318 kg). Still used in the UK and Ireland for body weight.
- Kilogram (kg)
- The SI base unit of mass, defined since 2019 through the Planck constant.