About the kg to st calculation
One kilogram is exactly 0.157473 stone, so converting between them is a single multiplication. Enter any value above and the result updates as you type. The SI base unit of mass, and how bodyweight is quoted in most of the world. A British unit of exactly 14 pounds, still the normal way to state bodyweight in the UK.
Formula
st = kg × 0.157473
1 kg = 0.157473 st
1 st = 6.3503 kgWorked example
To convert 70 kg, multiply by 0.157473: 70 × 0.157473 = 11.0231 st.
Frequently asked questions
How many stone are in a kilogram?
There are 0.157473 stone in one kilogram. To convert any amount, multiply the number of kilograms by 0.157473.
How do I convert stone back to kilograms?
Divide instead of multiplying, or equivalently multiply by 6.3503. One stone is 6.3503 kilograms.
Is this conversion exact?
Yes. Since the international agreement of 1959, the relationship between kilograms and stone is defined exactly rather than measured, so the only rounding here is in how many decimal places we show.
Where is each of these units used?
Kilograms: the SI base unit of mass, and how bodyweight is quoted in most of the world. Stone: a British unit of exactly 14 pounds, still the normal way to state bodyweight in the UK.
Sources
- NIST Special Publication 811 — Guide for the Use of the International System of Units