Stone to Kilograms (st to kg)
1 st = 6.35029 kg
and 1 kg = 0.157473 st
How to convert Stone to Kilograms
kg = st × 6.35029318
To convert, multiply the number of stone by 6.35029318. Example: 10 st × 6.35029318 = 63.5029 kg.
1 stone = 14 lb × 0.45359237 kg = exactly 6.35029318 kg.
Converts a UK-style body weight in stone to kilograms for medical forms, BMI calculations or gym equipment.
Mental shortcut: multiply by 6.35 (accurate to better than 0.05%).
Stone to Kilograms conversion chart
| Stone | Kilograms |
|---|---|
| 5 st | 31.75 kg |
| 5.5 st | 34.93 kg |
| 6 st | 38.1 kg |
| 6.5 st | 41.28 kg |
| 7 st | 44.45 kg |
| 7.5 st | 47.63 kg |
| 8 st | 50.8 kg |
| 8.5 st | 53.98 kg |
| 9 st | 57.15 kg |
| 9.5 st | 60.33 kg |
| 10 st | 63.5 kg |
| 10.5 st | 66.68 kg |
| 11 st | 69.85 kg |
| 11.5 st | 73.03 kg |
| 12 st | 76.2 kg |
| 12.5 st | 79.38 kg |
| 13 st | 82.55 kg |
| 13.5 st | 85.73 kg |
| 14 st | 88.9 kg |
| 14.5 st | 92.08 kg |
| 15 st | 95.25 kg |
| Stone | Kilograms |
|---|---|
| 15.5 st | 98.43 kg |
| 16 st | 101.6 kg |
| 16.5 st | 104.78 kg |
| 17 st | 107.95 kg |
| 17.5 st | 111.13 kg |
| 18 st | 114.31 kg |
| 18.5 st | 117.48 kg |
| 19 st | 120.66 kg |
| 19.5 st | 123.83 kg |
| 20 st | 127.01 kg |
| 20.5 st | 130.18 kg |
| 21 st | 133.36 kg |
| 21.5 st | 136.53 kg |
| 22 st | 139.71 kg |
| 22.5 st | 142.88 kg |
| 23 st | 146.06 kg |
| 23.5 st | 149.23 kg |
| 24 st | 152.41 kg |
| 24.5 st | 155.58 kg |
| 25 st | 158.76 kg |
Values rounded to 2 decimal places (4 below 1). Use the converter above for more precision.
Frequently asked questions
How many kilograms are in 1 stone?
1 stone = 6.35029 kilograms. 1 stone = 14 lb × 0.45359237 kg = exactly 6.35029318 kg.
How do I convert stone to kilograms?
Multiply the number of stone by 6.35029318. Example: 10 st × 6.35029318 = 63.5029 kg.
Is there a quick way to estimate st to kg in your head?
Yes — multiply by 6.35. This accurate to better than 0.05%. Use the exact formula (kg = st × 6.35029318) when precision matters.
How do I convert kilograms back to stone?
Use st = kg ÷ 6.35029318 — divide the number of kilograms by 6.35029318. See the Kilograms to Stone page for a full chart.