Provide the value below in st:
A stone (st) is a unit of mass in the imperial system, equal to 14 pounds or approximately 6.35 kilograms. It is primarily used in the United Kingdom and Ireland for measuring body weight. Although not part of the International System of Units (SI), the stone is still used in certain contexts, particularly in health and fitness settings, to provide a traditional and easily understood measure of weight.
A microgram (µg) is a unit of mass in the metric system, equal to one-millionth (1/1,000,000) of a gram. It is commonly used in fields requiring precise measurements of extremely small quantities, such as pharmacology, environmental science, and nutrition. For example, the concentrations of vitamins, hormones, and pollutants in various substances are often measured in micrograms. The microgram is part of the International System of Units (SI), ensuring consistency in small-scale measurements.