Weight converter
Stone to kg converter
Convert stone and pounds into kilograms for cleaner metric tracking, app entries, and direct reference use. The tool also lets you switch back to convert kilograms into stone.
Stone to kg conversion tool
Enter stone and pounds to get the kilogram result. Use the switch buttons if you need to convert kilograms back into stone.
Quick examples
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Result in kilograms
63.50301 kg
140 lb total
Quick reference
1 kg = 0.15747 st
1 st = 6.3503 kg
How stone to kg conversion works
To convert stone to kilograms, first turn the stone and pounds value into total pounds, then multiply by 0.45359237. A full stone equals 14 pounds, and 1 stone equals 6.35029 kilograms.
Quick notes
- • Use separate stone and pounds fields for a more natural UK input.
- • Helpful when apps, forms, or records need kilogram values.
- • The result stays cleaner when the starting stone value is entered exactly.
Why stone to kg helps
- Turning stone-based checks into metric app entries.
- Cleaning up records that need kilogram values.
- Comparing UK-style weights with metric tracking plans.
- Keeping the original stone-and-pounds format readable.
Need another weight converter?
Open the Weight hub to switch quickly between kilograms, pounds, and stone direct converter pages.
Open Weight hub