Stones to kilograms
1 stone = 6.35029 kilograms
Type a value in stones (st) to get kilograms (kg) straight away. A stone is larger than a kilogram, so the number goes up. Both units belong to weight, measured here against the kilogram.
1 st = 6.3502932 kg
Formula
kg = st × 6.3502932
One stone is 6.3502932 kilograms, so multiply the stone value by that factor. Here st is the value in stones and kg is the result in kilograms.
Worked example: 11 stones × 6.3502932 = 69.8532 kilograms.
Stones to kilograms table
| stones (st) | kilograms (kg) |
|---|---|
| 1 st | 6.35029 kg |
| 2 st | 12.7006 kg |
| 3 st | 19.0509 kg |
| 4 st | 25.4012 kg |
| 5 st | 31.7515 kg |
| 6 st | 38.1018 kg |
| 7 st | 44.4521 kg |
| 8 st | 50.8023 kg |
| 9 st | 57.1526 kg |
| 10 st | 63.5029 kg |
| 15 st | 95.2544 kg |
| 20 st | 127.006 kg |
| 25 st | 158.757 kg |
| 30 st | 190.509 kg |
| 40 st | 254.012 kg |
| 50 st | 317.515 kg |
| 60 st | 381.018 kg |
| 75 st | 476.272 kg |
| 100 st | 635.029 kg |
Everyday stones in kilograms
| What it is | st | kg |
|---|---|---|
| 14 pounds | 1 st | 6.35029 kg |
| a child's weight (about) | 7 st | 44.4521 kg |
| a light adult | 10 st | 63.5029 kg |
| an average adult | 12 st | 76.2035 kg |
| a heavy adult | 16 st | 101.605 kg |
Quick estimate in your head
Multiply by about 6.4. For 11 st that gives 70.4 kg against an exact 69.8532 kg, an error of 0.8%.
Watch out for
- Body weight in stones is often written as stones and pounds, e.g. 11 st 4 lb, not as a decimal.
About the units
Stone (st). 14 pounds, about 6.35 kg. Still used for body weight in the UK and Ireland.
Kilogram (kg). The SI base unit of mass, defined through the Planck constant since 2019.
Going the other way, 1 kilogram is 0.157473 stones.
Questions
How many kilograms are in 1 stone?
1 stone is 6.35029 kilograms, and 1 kilogram is 0.157473 stones.
How do I convert stones to kilograms?
Use kg = st × 6.3502932. For example, 11 stones × 6.3502932 = 69.8532 kilograms.
Is the stone to kilogram factor exact?
Yes, the definitions are exact, so the factor is exact. Results here are rounded to 6 significant digits for display.
How much is a heavy adult in kilograms?
16 st is 101.605 kg.
Source for the conversion factor: NIST SP 811, Appendix B (conversion factors).
Related conversions
- kilograms to stones
- kilograms to pounds
- pounds to kilograms
- kilograms to grams
- grams to kilograms
- stones to pounds