# Stones & Pounds to Kilograms Converter

Enter the weight in stones below to get the value converted to kilograms.

st
lb

## Result in Kilograms:

1 st = 6.350293 kg

Do you want to convert kilograms to stones?

## How to Convert Stones to Kilograms

To convert a measurement in stones to a measurement in kilograms, multiply the weight by the following conversion ratio: 6.350293 kilograms/stone.

Since one stone is equal to 6.350293 kilograms, you can use this simple formula to convert:

kilograms = stones × 6.350293

The weight in kilograms is equal to the weight in stones multiplied by 6.350293.

For example, here's how to convert 5 stones to kilograms using the formula above.
kilograms = (5 st × 6.350293) = 31.751466 kg

### How Many Kilograms Are in a Stone?

There are 6.350293 kilograms in a stone, which is why we use this value in the formula above.

1 st = 6.350293 kg

Stones and kilograms are both units used to measure weight. Keep reading to learn more about each unit of measure.

## What Is a Stone?

One stone is equal to 14 pounds and is mostly used in the United Kingdom and Ireland as a unit of mass. It's most commonly used to measure personal body weight.[1]

The stone is an imperial unit of weight. Stones can be abbreviated as st; for example, 1 stone can be written as 1 st.

Learn more about stones.

## What Is a Kilogram?

One kilogram is equal to 1,000 grams, 2.204623 pounds, or 1/1,000 of a metric ton.

The formal definition of the kilogram changed in 2019. One kilogram was previously equal to the mass of the platinum-iridium bar, known as the International Prototype of the Kilogram, which was stored in SÃ¨vres, France.

The 2019 SI brochure now defines the kilogram using the Planck constant, and it is defined using the meter and second.[2] It is equal to the mass of 1,000 cubic centimeters, or milliliters, of water.

The kilogram, or kilogramme, is the SI base unit for weight and is also a multiple of the gram. In the metric system, "kilo" is the prefix for thousands, or 103. Kilograms can be abbreviated as kg; for example, 1 kilogram can be written as 1 kg.

Learn more about kilograms.

## Stone to Kilogram Conversion Table

Table showing various stone measurements converted to kilograms.
Stones Kilograms
1 st 6.3503 kg
2 st 12.7 kg
3 st 19.05 kg
4 st 25.4 kg
5 st 31.75 kg
6 st 38.1 kg
7 st 44.45 kg
8 st 50.8 kg
9 st 57.15 kg
10 st 63.5 kg
11 st 69.85 kg
12 st 76.2 kg
13 st 82.55 kg
14 st 88.9 kg
15 st 95.25 kg
16 st 101.6 kg
17 st 107.95 kg
18 st 114.31 kg
19 st 120.66 kg
20 st 127.01 kg
21 st 133.36 kg
22 st 139.71 kg
23 st 146.06 kg
24 st 152.41 kg
25 st 158.76 kg
26 st 165.11 kg
27 st 171.46 kg
28 st 177.81 kg
29 st 184.16 kg
30 st 190.51 kg
31 st 196.86 kg
32 st 203.21 kg
33 st 209.56 kg
34 st 215.91 kg
35 st 222.26 kg
36 st 228.61 kg
37 st 234.96 kg
38 st 241.31 kg
39 st 247.66 kg
40 st 254.01 kg

## References

1. National Institute of Standards and Technology, Handbook 44 - 2012 - Appendix B, https://www.nist.gov/system/files/documents/2017/04/28/AppB-12-hb44-final.pdf
2. International Bureau of Weights and Measures, The International System of Units, 9th Edition, 2019, https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf