Convert stone (us) to kg
Stone (US)
The stone (US) is a unit of mass in the US customary system equal to 14 pounds (approximately 6.35 kg). While the stone is more commonly associated with the British imperial system—where it is still used colloquially for body weight—its US equivalent shares the same value of 14 pounds. The stone is not an official SI unit and its use is largely limited to informal contexts.
Kilogram-force
The kilogram-force ( kgf or kg F ), or kilopond ( kp , from Latin: pondus , lit. 'weight'), is a gravitational metric unit of force. It is equal to the magnitude of the force exerted on one kilogram of mass in a 9.80665 m/s 2 gravitational field (standard gravity, a conventional value approximating the average magnitude of gravity on Earth). Therefore, one kilogram-force is by definition equal to 9.806 65 N. Similarly, a gram-force is 9.806 65 mN, and a milligram-force is 9.806 65 μN.