stone to kg
1 stone equals 6.3503 kilograms. Formula: kilograms = stone × 6.35029.
= 76.2035 kg
Other direction: kg to stone
Formula
kilograms = stone × 6.35029
Example: 12 st = 76.2035 kg.
When you need stone to kg
British and Irish body weights are quoted in stone — “11 stone” is about 69.9 kg. Gyms, medical forms, and fitness apps outside the UK want kilograms, so multiply stone by 6.35 (and add pounds × 0.4536 if the weight is given as stone and pounds).
For mixed values like 12 st 8 lb: convert the stones (12 × 6.35029 = 76.2 kg), then the pounds (8 × 0.45359 = 3.6 kg), for a total of about 79.8 kg.
Common st to kg values
| Stone (st) | Kilograms (kg) |
|---|---|
| 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 | 101.6 |
| 20 | 127.01 |
FAQ
What is 12 stone in kg?
12 stone is about 76.2 kg. One stone equals 6.35029 kg, or exactly 14 pounds.
How do I convert stone and pounds to kg?
Multiply the stones by 6.35029 and the extra pounds by 0.45359, then add them. Example: 12 st 8 lb = 76.2 + 3.6 = 79.8 kg.
What is 11 stone 6 pounds in kg?
11 × 6.35029 + 6 × 0.45359 ≈ 69.85 + 2.72 = 72.6 kg. Same method for any “stone and pounds to kg” value: convert each part, then add.