Convert stones to kilograms in one step. Type a value, change the units if you need a different pair, and the answer updates as you type, with the reverse rate and a quick reference list.
Results are estimates for planning. Check the figures before you make a financial or health decision.
How to convert stones to kilograms
Multiply the number of st by 6.350293 to get kg:
kg = st × 6.350293
To go the other way, divide by 6.350293 (or multiply by 0.157473). The converter stores each unit as a multiple of a base unit, so you can also pick any other pair of units from the same group.
Worked example
Using the default values in the converter above:
| Input | Value |
|---|---|
| Value | 11 |
| From | Stones |
| To | Kilograms |
11 stones equals 69.853225 kilograms
Stone to KG reference table
| Stones | Kilograms |
|---|---|
| 1 st | 6.350293 kg |
| 2 st | 12.700586 kg |
| 5 st | 31.751466 kg |
| 10 st | 63.502932 kg |
| 20 st | 127.005864 kg |
| 50 st | 317.514659 kg |
| 100 st | 635.029318 kg |
| 200 st | 1,270.058636 kg |
| 500 st | 3,175.14659 kg |
Tips and common mistakes
The pound is defined as exactly 0.45359237 kg, and the avoirdupois ounce as one sixteenth of a pound (28.349523125 g). A stone is 14 pounds, which is 6.35029318 kg. These are the units used for body weight in the UK and for most food and shop weights.
Watch out for the troy ounce, used for gold and silver, which is about 31.1 g and is not the same as the everyday ounce. Also check whether a figure is in pounds or stones, because 11 st is 154 lb, not 11 lb.
For a rough mental conversion, a kilogram is about 2.2 lb, and 100 g is a little over 3.5 oz.
Frequently asked questions
How many kilograms are in 1 st?
1 st equals 6.350293 kilograms.
How do I convert st to kg by hand?
Multiply the st figure by 6.350293. For example, 11 st × 6.350293 = 69.853225 kg.
How do I convert kg back to st?
Divide the kg figure by 6.350293, or multiply it by 0.157473. For example, 69.853225 kg is 11 st.
Is this conversion exact?
The pound and ounce are defined exactly in kilograms, so the factor is exact. Any difference comes only from rounding.