Filling a medical form
A weight of 11 stone is about 69.85 kg for a doctor's record.
Use Stone to Kilograms
Converts stone to kilograms in this tab, with nothing sent anywhere.
Runs entirely on your deviceThe conversion happens in this browser tab. Nothing you type is uploaded, logged or stored, which is worth knowing for anything you would not paste into a search box.
Eleven stone equals about 69.85 kg. If a weight is written as 11 st 6 lb, convert the six-pound remainder separately or express the whole value as 11.4286 stone before entering it here.
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Browse all general convertersAbout Stone to Kilograms
The stone is the unit the UK and Ireland still use for body weight - one stone is 14 pounds - while the rest of the world, and all of medicine, uses kilograms. Converting stone to kilograms is what a British person does to put their weight into the metric figure a doctor, a gym app or an international form expects. One stone is about 6.35 kg. Body weight is almost the only place the stone survives, but there it is deeply embedded: people in the UK routinely know their weight in stone and pounds and nowhere else, so converting to kilograms is a constant small friction with any system that assumes metric. The stone's 6.35 kg is awkward precisely because 14 pounds does not divide neatly into the metric scale. Medical records, fitness trackers and visa or licence forms almost always want kilograms, so a weight known only in stone has to be converted before it can be entered. Because a stone is a touch over 6.3 kg, a rough estimate multiplies stone by about 6.35 - but for a medical figure the exact conversion is worth using. Enter stone and pounds as decimal stone first: add the pounds divided by 14 to the whole stones.
Using Stone to Kilograms
- Type a number of st. You can paste a value with its unit; the tool reads the number.
- The exact factor is applied and the result is shown as kg, updating live as you type.
- Copy the answer, or switch to the reverse converter to go from kg back to st.
Where stone to kilograms helps
Both directions
Need the opposite? The kg-to-st converter is linked below and uses the exact inverse factor.
Before you use the result
- The result is rounded for readability; the underlying factor is exact, so a value converted and back may differ in the last decimal place.
- Units in your input are ignored - only the number is read - so make sure the figure you type is really in st.
Questions about Stone to Kilograms
How many kg is a stone?
About 6.35 kg. One stone is 14 pounds, so 11 stone - a common adult weight - is roughly 69.85 kg.
Is my data uploaded?
No. Stone to Kilograms does the arithmetic in this browser tab; the value is calculated on your device and is not sent to a server.
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Kilograms to Stone
Convert kilograms to stone instantly in your browser. Exact factor, both directions, nothing uploaded.