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 | 0.015747304441777 st |
| 1 kg | 0.15747304441777 st |
| 2 kg | 0.31494608883554 st |
| 3 kg | 0.47241913325331 st |
| 5 kg | 0.78736522208885 st |
| 10 kg | 1.5747304441777 st |
| 20 kg | 3.1494608883554 st |
| 30 kg | 4.7241913325331 st |
| 50 kg | 7.8736522208885 st |
| 100 kg | 15.747304441777 st |
| 1000 kg | 157.47304441777 st |