Kilograms (kg) to Stones (st) Conversion
Kilograms
The kilogram is the SI base unit of mass. From 1889 to 2019, it was defined by the International Prototype of the Kilogram — a physical cylinder of platinum-iridium alloy stored near Paris. In 2019, the kilogram was redefined in terms of Planck's constant (h = 6.62607015 × 10⁻³⁴ J·s), making it the first base unit defined entirely by a fundamental constant of nature. This eliminated the risk of the kilogram gradually changing mass due to contamination of the physical prototype.
Stones
The stone is a unit of mass equal to exactly 14 pounds (approximately 6.35 kilograms), used almost exclusively in the United Kingdom and Ireland for expressing human body weight. Standardised by the Weights and Measures Act of 1835, the stone persists in British popular culture and medical contexts despite not being part of the SI system.
| Kilograms (kg) | Stones (st) |
|---|---|
| 0.1 kg | 0.0157 st |
| 1 kg | 0.1575 st |
| 2 kg | 0.3149 st |
| 3 kg | 0.4724 st |
| 5 kg | 0.7874 st |
| 10 kg | 1.5747 st |
| 20 kg | 3.1495 st |
| 30 kg | 4.7242 st |
| 50 kg | 7.8737 st |
| 100 kg | 15.7473 st |
| 1000 kg | 157.473 st |
Frequently Asked Questions (FAQ)
How many stones are in 1 kilograms?
1 kilograms (kg) is exactly 0.157473 stones (st).
How do I convert kilograms to stones?
Multiply the value in kilograms by 0.157473 to get the result in stones. Or use the converter above — type any number and see the result instantly.