Kilograms to Stone

1 kg = 0.157473 st

Kilograms to stone helps people in the UK and Ireland understand a weight recorded in metric by a hospital, gym, or bathroom scale. Many British and Irish adults still think of their body weight in stone and pounds. One stone is exactly 6.35029318 kg, so dividing by that figure gives stone.

From

When you need to convert kilograms to stone

Understanding a weight from an NHS or GP appointment recorded in kilograms
Translating a metric smart-scale reading into familiar stone and pounds
Comparing weight-loss progress tracked in kilograms with a target in stone
Following a fitness program from abroad while thinking in stone

How to convert kilograms to stone

st = kg × 0.157473

Example: 5 kg = 0.7873652 st

Common body weights

Kilograms (kg)	Stone (st)
50 kg	7.873652 st
60 kg	9.448383 st
65 kg	10.23575 st
70 kg	11.02311 st
75 kg	11.81048 st
80 kg	12.59784 st
90 kg	14.17257 st
100 kg	15.7473 st
110 kg	17.32203 st

Tips for converting kilograms to stone

Divide kilograms by 6.35 for an accurate estimate. Multiplying by 0.16 gives a quick figure about 1.6% high.
A result like 10.5 st means ten and a half stone, which is 10 st 7 lb. Multiply the decimal part by 14 to get pounds.
Body weight naturally shifts by around a kilogram during a day, so tiny differences after conversion are rarely meaningful.

Kilograms to Stone conversion table

Kilograms (kg)	Stone (st)
1 kg	0.157473 st
2 kg	0.3149461 st
3 kg	0.4724191 st
4 kg	0.6298922 st
5 kg	0.7873652 st
6 kg	0.9448383 st
7 kg	1.102311 st
8 kg	1.259784 st
9 kg	1.417257 st
10 kg	1.57473 st
15 kg	2.362096 st
20 kg	3.149461 st
25 kg	3.936826 st
30 kg	4.724191 st
40 kg	6.298922 st
50 kg	7.873652 st
75 kg	11.81048 st
100 kg	15.7473 st
250 kg	39.36826 st
500 kg	78.73652 st
1,000 kg	157.473 st

About the units

Kilograms: The kilogram is the SI base unit of mass, defined through the Planck constant. It is the everyday unit for body weight and groceries in most countries.

Stone: The stone is a British unit of mass equal to 14 pounds, or about 6.35 kilograms, still used for body weight in the UK and Ireland.

Frequently asked questions

How many stone are in 1 kilogram?

1 kilogram equals 0.157473 stone.

How many kilograms are in 1 stone?

1 stone equals 6.350293 kilograms.

How do I convert kilograms to stone?

Use the formula st = kg × 0.157473.

What is 10 kilograms in stone?

10 kilograms equals 1.57473 stone.

Related conversions

Sources

Conversion factors use the exact definitions published by NIST and the BIPM, and are checked by automated tests against those definitions.

Last updated: October 17, 2026