Stone to KG Converter
By Santaji GadepatilinUpdated October 27, 2026
The stone is a traditional British unit of body weight equal to 14 pounds. One stone is about 6.35 kg. This free stone to KG converter converts instantly in both directions and includes a quick reference table.
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Type in any field to change it. Press × on a value to calculate that field instead.
How to use the stone to KG converter
Type a value in Stone and the other units update instantly. Every field is live, so you can just as easily start from kilograms or any other unit and convert back.
Stone to KG formula
kg = stone × 6.35029318
1 st = 6.35029 kg, and 1 kg = 0.157473 st.
st to kg chart
| st | kg | st | kg |
|---|---|---|---|
| 5 | 31.7515 | 11.5 | 73.0284 |
| 6 | 38.1018 | 12 | 76.2035 |
| 7 | 44.4521 | 12.5 | 79.3787 |
| 8 | 50.8023 | 13 | 82.5538 |
| 8.5 | 53.9775 | 14 | 88.9041 |
| 9 | 57.1526 | 15 | 95.2544 |
| 9.5 | 60.3278 | 16 | 101.605 |
| 10 | 63.5029 | 18 | 114.305 |
| 10.5 | 66.6781 | 20 | 127.006 |
| 11 | 69.8532 |
kg to st chart
| kg | st | kg | st |
|---|---|---|---|
| 40 | 6.29892 | 80 | 12.5978 |
| 50 | 7.87365 | 85 | 13.3852 |
| 55 | 8.66102 | 90 | 14.1726 |
| 60 | 9.44838 | 100 | 15.7473 |
| 65 | 10.2357 | 110 | 17.322 |
| 70 | 11.0231 | 120 | 18.8968 |
| 75 | 11.8105 |
Definitions
- Stone: exactly 14 lb, or 6.35029318 kg. Used for body weight in the UK and Ireland.
- Kilogram: about 0.1575 stone.
Stone and pounds to kg
| Weight | kg |
|---|---|
| 8 st 7 lb | 54.0 |
| 9 st 0 lb | 57.2 |
| 9 st 7 lb | 60.3 |
| 10 st 0 lb | 63.5 |
| 10 st 7 lb | 66.7 |
| 11 st 0 lb | 69.9 |
| 11 st 7 lb | 73.0 |
| 12 st 0 lb | 76.2 |
| 13 st 0 lb | 82.6 |
| 14 st 0 lb | 88.9 |
| 15 st 0 lb | 95.3 |
| 16 st 0 lb | 101.6 |
How to convert stone and pounds
Multiply the stone by 14, add the pounds, then multiply by 0.4536. 11 st 7 lb = 161 lb = 73.0 kg.
Using kg for health calculators
Most health calculators use kg or lb. Convert here first, then check your BMI or daily calories.
Frequently asked questions
How many kg is 1 stone?
6.35 kg.
How many kg is 10 stone?
63.5 kg.
How many stone is 70 kg?
11.02 stone, or 11 st 0.3 lb.