Convert stone to kilogram
1 stone = 6.350293 kilograms. Enter any value below for an exact conversion.
1 st =
6.350293 kg
kilograms
Need the reverse? Convert kilogram to stone →
Formula
1 stone = 6.350293 kilograms kilogram = stone × 6.350293 stone = kilograms × 0.157473
stone to kilogram conversion table
About converting stone to kilograms
Stone to kilograms converts the UK body-weight unit into metric for medical forms, gym equipment, and international contexts. One stone equals 6.35029 kilograms.
Method & sources
Conversions use exact legal definitions rather than rounded approximations: 1 inch = 2.54 cm and 1 pound = 0.45359237 kg (fixed by the 1959 international yard and pound agreement), 1 mile = 1.609344 km, and 1 US liquid gallon = 3.785411784 litres. Temperatures convert with °F = °C × 9⁄5 + 32 and K = °C + 273.15. Results are rounded only for display.
- NIST Special Publication 811 — Guide for the Use of the SI
- NIST Handbook 44, Appendix C — General Tables of Units of Measurement
Page last updated: October 1, 2026
Frequently asked questions
How many kilograms are in a stone?
One stone equals 6.350293 kilograms. So 10 stone is 63.50293 kilograms. Use the converter above for any value.
What is the formula to convert stone to kilograms?
1 stone = 6.350293 kilograms kilogram = stone × 6.350293 stone = kilograms × 0.157473
Is the stone-to-kilogram conversion exact?
Yes. The conversion factor between stone and kilograms is defined exactly, so results are precise — only rounded for display.
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