About the KG to Stone Converter
In the UK and Ireland, body weight is still often given in stone and pounds, while medical records, gyms, scales and most products use kilograms. This converter changes kilograms into stone and pounds, for example 72 kg into 11 stone 4.7 pounds, and works the other way round as well. It shows the exact total in pounds and the stone as a decimal. A table lists body weights from 50 to 100 kg in stone and pounds to save you from converting every time. The conversion uses the exact value of one pound, 0.45359237 kilograms, with 14 pounds in a stone.
Updated October 2026
How to use the KG to Stone Converter
- 1Choose kilograms to stone and pounds, or the reverse.
- 2Enter the kilograms, or the stone and pounds.
- 3Read the converted weight in the large result.
- 4Check the total pounds and the decimal stone.
- 5Use the table for common body weights.
Common body weights
- 50 kg = 7 st 12 lb.
- 60 kg = 9 st 6.3 lb.
- 70 kg = 11 st 0.3 lb.
- 80 kg = 12 st 8.4 lb.
- 90 kg = 14 st 2.4 lb.
- 100 kg = 15 st 10.5 lb.
Worked example
Suppose a scale shows 72 kg. Dividing by 0.45359237 gives 158.73 pounds. Dividing that by 14 gives 11.34, so the whole stone is 11, and the pounds left over are 158.73 − 154 = 4.73. So 72 kg is 11 stone 4.7 pounds. To check, 11 stone is 154 pounds and 4.7 pounds more is 158.7, which is 72 kg.
The stone is also helpful when you read about historical or sporting weights. Boxers in Britain are often described by their weight in stone and pounds, and jockeys ride at weights set in stone and pounds. A flyweight is 8 stone, which is 50.8 kg. If you are following sports reports from the UK, converting to kilograms puts the weights on the same scale as the rest of the world.
When you move between systems, expect small differences in rounding. A scale in kilograms that shows 72.3 kg and one in stone that shows 11 stone 5 pounds describe a weight within a pound of each other: 11 stone 5 pounds is about 72.1 kg. For personal tracking, an error of half a pound is not significant, because normal daily changes in water, food and clothing are several times greater than that.
Tracking weight
If you are following a UK programme that gives targets in stone, but your scale shows kilograms, switch to this table to see progress. A kilogram is about 2.2 pounds, so losing 1 kg is losing 2 pounds 3 ounces. Choose one unit for tracking and stick to it, so rounding does not hide small changes.
Related tools
The Stones to Pounds Converter starts from stone, the KG to LBS Converter is for kilograms and pounds, the BMI Calculator and Ideal Weight Calculator interpret your weight, and the Calorie Calculator helps with goals.
Features
- Both directions
- Stone, pounds and decimal stone
- Total pounds
- Table from 50 to 100 kg
- Exact conversion factors
- Free and private
Frequently asked questions
How do I convert kg to stone?
Divide the kilograms by 6.35029. The whole number is the stone and the remainder, multiplied by 14, is the pounds. For 72 kg: 72 ÷ 6.35029 = 11.34, which is 11 stone and 4.7 pounds.
How many kg is 10 stone?
63.5 kg. 11 stone is 69.85 kg, 12 stone is 76.2 kg and 14 stone is 88.9 kg.
How many pounds are in a kilogram?
2.20462. So 70 kg is 154.3 pounds, or 11 stone 0.3 pounds.
Why is the pounds part a decimal?
Because kilograms rarely fit whole pounds. The calculator shows one decimal place, like 4.7 lb. You can round to the nearest pound or half pound for everyday use.
What is a healthy weight in stone?
It depends on height. For an adult 170 cm tall, the healthy BMI range of 18.5 to 24.9 covers about 8 stone 6 pounds to 11 stone 5 pounds. The BMI Calculator gives your own range.
Is a stone used for anything besides people?
Historically it was used for wool, meat and other goods, with different values in different places. Today it is mainly a way to say a person's weight in the UK and Ireland.