KG to Stone Converter
Divide a mass in kilograms by 6.35029318 to get stone. 70 kg = 11.0231131092 st, so 70 kg is just over 11 stone.
The stone is still used for body weight in the UK and Ireland, often alongside pounds, as in 11 st 4 lb. This page gives decimal stone, which you can split into stone and pounds.
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(opens in a new tab)How to convert kilograms to stone
Formula: stone = kilograms / 6.35029318
The constant is exact by definition: 1 stone = 6.35029318 kilograms. It is not a rounded approximation.
A stone is exactly 14 avoirdupois pounds, and a pound is exactly 0.45359237 kilograms, so a stone is exactly 14 × 0.45359237 = 6.35029318 kilograms.
To write the result as stone and pounds, keep the whole stone and multiply the decimal part by 14. For example, 0.5 st is 7 lb.
Worked example: 70 kg to stone
The answer below is shown to 12 significant digits. The full value has more digits, so treat the displayed figure as rounded.
Convert 70 kg
Input
70 kg
Output
70 / 6.35029318 = 11.0231131092 st
Common kilograms to stone conversions
| Kilograms (kg) | Stone (st) |
|---|---|
| 1 kg | 0.157473044418 st |
| 5 kg | 0.787365222089 st |
| 10 kg | 1.57473044418 st |
| 50 kg | 7.87365222089 st |
| 60 kg | 9.44838266507 st |
| 70 kg | 11.0231131092 st |
| 80 kg | 12.5978435534 st |
| 100 kg | 15.7473044418 st |
When you need to convert kilograms to stone
- Body weight: a scale or a medical form in kilograms, compared with a weight someone quotes in stone.
- UK sources: articles, records and forms that state a weight in stone.
- Sports such as boxing and horse racing in the UK, where weights are often given in stone and pounds.
- Larger objects or luggage where someone describes the weight in stone.
Things worth knowing
- This page converts the number only. It does not interpret a body weight or say whether a weight is high or low.
- The plural of stone, as a unit of weight, is usually also stone: 11 stone, not 11 stones.
Converting back and related converters
To go the other way, use the Stone to KG Converter, which applies kilograms = stone × 6.35029318. For any other pair of units, open the Unit Converter, or browse every unit converter.
- KG to LBS Converter: to convert kilograms to pounds only.
- LBS to KG Converter: to convert the pounds part of a stone-and-pounds weight.
Frequently asked questions
How many kilograms are in one stone?
Exactly 6.35029318 kilograms. A stone is 14 pounds, and the pound is defined as exactly 0.45359237 kg.
How many stone is 70 kg?
70 kg = 11.0231131092 st. That is 11 whole stone plus a fraction of a pound.
How do I turn decimal stone into stone and pounds?
Keep the whole number of stone, then multiply what is left after the decimal point by 14 to get pounds. 10.5 st, for example, is 10 st 7 lb.
Is there a quick way to estimate kg in stone?
Divide by 6.35, or for a rougher figure divide by 6.4. For 80 kg, 80 / 6.35 gives about 12.6 stone, against an exact 12.5978435534 st.