Convert Stone to Kilograms
st to kg · weight & mass conversion
What are stone and kilograms?
A stone is 14 pounds (6.35 kg), used mainly in the UK and Ireland for body weight. The kilogram is the SI base unit of mass, defined since 2019 by the Planck constant. For scale: a 70 kg adult weighs about 154 lb, and a bag of sugar is usually 1 kg (2.2 lb).
How to convert stone to kilograms
1 st = 6.35029 kg. To convert, multiply the number of stone by 6.35029. For example, 5 st = 31.7515 kg, and 20 st = 127.006 kg. To go the other way, multiply kilograms by 0.157473 (since 1 kg = 0.157473 st).
Stone to Kilograms conversion table
| Stone (st) | Kilograms (kg) |
|---|---|
| 1 | 6.35029 |
| 2 | 12.7006 |
| 5 | 31.7515 |
| 10 | 63.5029 |
| 25 | 158.757 |
| 50 | 317.515 |
| 100 | 635.029 |
FAQ
What is 1 st in kg?
1 st = 6.35029 kg. To convert any amount, multiply the number of stone by 6.35029.
How do I convert kilograms back to stone?
Go the other way: 1 kg = 0.157473 st, so multiply kilograms by 0.157473 to get stone.
Is a stone bigger than a kilogram?
Yes — 1 st is the larger unit, equal to 6.35029 kg.
Are these weight & mass conversions exact?
They use the standard internationally-defined conversion factors. Results are rounded to six significant figures for readability, which is accurate enough for everyday and most technical use.