Stone to Kilograms Converter
1 stone = 6.35029318 kilograms
1 stone equals 6.35029 kilograms
How to convert stone to kilograms
These units measure mass. Pounds and ounces mean avoirdupois unless the unit explicitly says troy; a fluid ounce measures volume and requires a density to relate it to mass.
kg = st × 6.35029318One stone is 6.35029318 kilograms, so a single multiplication converts any value.
63.5029 kg ≈ 10 × 6.35029318Stone to kilograms conversion table
Common values in stone, converted to kilograms.
| Stone (st) | Kilograms (kg) |
|---|---|
| 1 | 6.3502932 |
| 2 | 12.700586 |
| 3 | 19.05088 |
| 4 | 25.401173 |
| 5 | 31.751466 |
| 10 | 63.502932 |
| 20 | 127.00586 |
| 25 | 158.75733 |
| 50 | 317.51466 |
| 100 | 635.02932 |
| 250 | 1,587.5733 |
| 500 | 3,175.1466 |
| 1,000 | 6,350.2932 |
About these units
stonest
Exactly 14 pounds. Commonly used for body weight in the UK and Ireland.
kilogramkg
The SI base unit of mass, defined by fixing the Planck constant.
Reference: BIPM SI Brochure (9th ed.).
Sources and precision
Table results are rounded to 8 significant digits; formula constants may be rounded to 10. Worked example answers use 6 significant digits. The converter starts at 6 significant digits and lets you change display precision. Calculations use the stored factors without intermediate rounding. Exact unit definitions do not make an input measurement more precise; conventional and measured factors follow the assumptions stated here.