Stone to Kilograms
Convert stone (st) to kilograms (kg). 1 st = 6.35029 kg (and 1 kg = 0.15747312 st). It all runs locally in your browser.
Stone to Kilograms table
| Stone | Kilograms |
|---|---|
| 0.5 st | 3.175145 kg |
| 1 st | 6.35029 kg |
| 2 st | 12.70058 kg |
| 3 st | 19.05087 kg |
| 5 st | 31.75145 kg |
| 10 st | 63.5029 kg |
| 25 st | 158.75725 kg |
| 50 st | 317.5145 kg |
| 100 st | 635.029 kg |
Where this conversion shows up
Stone survives almost exclusively as the UK and Irish unit for body weight — nowhere else weighs people in it, and nothing else is weighed in it. Anyone moving between a British doctor's "11 stone 4" and a metric gym or medical chart needs this conversion.
Worked example
Someone weighing 11 st 4 lb: convert the pounds first (11 × 14 + 4 = 158 lb), then 158 × 0.453592 = 71.7 kg. Or directly: 11 st × 6.35029 = 69.9 kg, plus 4 lb (1.8 kg) = 71.7 kg.
Rounding and precision
Body-weight conversations rarely need better than 0.5 kg. One stone is 6.35 kg, so a quick anchor: 10 st ≈ 63.5 kg, 12 st ≈ 76 kg, 15 st ≈ 95 kg.
How to convert
To convert stone to kilograms, multiply by 6.35029. Need other units? Use the full Unit Converter.
FAQ
How many kilograms in a stone?
1 stone equals 6.35029 kilograms (kg).
How do I convert stone to kilograms?
Multiply the stone value by 6.35029. For example, 5 st = 31.75145 kg.
Why are there 14 pounds in a stone?
The stone was standardised at 14 lb for wool trading in medieval England and the value stuck. Other goods historically used different stones — 8 lb for meat, 16 lb for cheese — before the 14 lb version won.
How do I convert stone and pounds together?
Multiply the stone by 14, add the pounds, then multiply the total by 0.453592. Example: 13 st 6 lb = 188 lb = 85.3 kg.