Stone to KG Converter
Type a value in stone to see it in kilograms as you type, with the exact formula and a reference chart.
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How this was calculated
- 1 stone = 6.35029318 kilograms
- 12 × 6.35029318 = 76.203518 kg
| st | kg |
|---|---|
| 6 st | 38.1018 kg |
| 7 st | 44.4521 kg |
| 8 st | 50.8023 kg |
| 9 st | 57.1526 kg |
| 10 st | 63.5029 kg |
| 11 st | 69.8532 kg |
| 12 st | 76.2035 kg |
| 13 st | 82.5538 kg |
| 14 st | 88.9041 kg |
| 15 st | 95.2544 kg |
| 16 st | 101.605 kg |
| 17 st | 107.955 kg |
| 18 st | 114.305 kg |
| 20 st | 127.006 kg |
| kg | st |
|---|---|
| 40 kg | 6.29892 st |
| 45 kg | 7.08629 st |
| 50 kg | 7.87365 st |
| 55 kg | 8.66102 st |
| 60 kg | 9.44838 st |
| 65 kg | 10.2357 st |
| 70 kg | 11.0231 st |
| 75 kg | 11.8105 st |
| 80 kg | 12.5978 st |
| 85 kg | 13.3852 st |
| 90 kg | 14.1726 st |
| 95 kg | 14.9599 st |
How to convert stone to kilograms
1 stone = 6.35029318 kilograms. To convert stone to kilograms, multiply by 6.35029318. A stone is 14 pounds, exactly 6.35029318 kg. The kilogram is the SI base unit of mass, defined by the Planck constant.
Worked examples
- 9 stone = 57.1526 kg (9 × 6.3502932)
- 12 stone = 76.2035 kg (12 × 6.3502932)
- 15 stone = 95.2544 kg (15 × 6.3502932)
Where this conversion comes up
Stone are used for body weight in the UK and Ireland; kilograms for body weight, luggage and groceries outside the US. A stone is exactly 6.35029318 kg. For stone and pounds (e.g. 11 st 4 lb), convert the stone, then add the pounds × 0.4536.
Quick estimate
Multiply by 6.35.
Common mistakes
- Dividing instead of multiplying. A kilogram is smaller than a stone, so the number of kilograms must come out larger: 9 stone = 57.1526 kg.
- Rounding too early. Keep the full factor until the last step; rounding 6.35 to 6 first puts large values noticeably off.
Going the other way? Use the kg to stone converter. Related weight converters: grams to ounces, oz to grams, oz to lbs, lbs to oz, grams to pounds, pounds to grams.
Frequently asked questions
How do you convert stone to kilograms?
Multiply the stone by 6.35029318. For example, 12 stone is 76.2035 kilograms.
How many kilograms are in one stone?
One stone is 6.35029318 kilograms. A stone is 14 pounds, exactly 6.35029318 kg.
What is 15 stone in kilograms?
15 stone is 95.2544 kilograms.
Is there a quick way to estimate stone to kilograms?
Multiply by 6.35.