Convert stone to kilograms
Enter any value to calculate the result instantly.
stone to kilograms formula
Multiply stone by 6.35029318. One stone equals exactly 14 avoirdupois pounds, and each pound equals exactly 0.45359237 kilogram.
Conversion table
Use these reference values for a quick comparison. The calculator above accepts positive, negative, decimal, and large values when they are meaningful for the quantity.
| stone | kilograms |
|---|---|
| 1 st | 6.35029318 kg |
| 5 st | 31.7514659 kg |
| 8 st | 50.80234544 kg |
| 10 st | 63.5029318 kg |
| 12 st | 76.20351816 kg |
| 15 st | 95.2543977 kg |
How to use this converter
Enter the source measurement in the first field. CalUnit applies the displayed formula and updates the destination value immediately. You can use decimals and negative values, copy the result into your work, and compare it with the reference table. Keep the original unit beside the starting measurement so another reader can verify the calculation. For a different unit pair, open the complete weight conversion guide or the multi-unit weight converter.
When this conversion is useful
Stone remains common for personal body weight in the United Kingdom and Ireland, while clinical and international records generally use kilograms.
Accuracy and rounding
The unit relationship is exact. Body-weight readings naturally vary and should normally be rounded to the precision shown by the scale.
Standards references
CalUnit checks physical unit relationships against authoritative measurement references. See the NIST Guide to the SI conversion factors and the BIPM SI Brochure. Regional cooking measures and digital storage conventions are identified separately because their names can represent more than one definition.