What is a stone?
A stone is a unit of weight commonly used in the United Kingdom and Ireland. It is equal to 14 pounds or approximately 6.35 kilograms. The stone is often used to measure the weight of a person or animals, as well as for certain goods such as fruit and vegetables. While not an official metric unit, the stone is still widely used in everyday life in these countries.
We provide a calculator on this site to convert stones to kilograms.
What is a milligram?
A milligram is a unit of mass in the metric system, equal to one thousandth of a gram. It is commonly used to measure very small amounts of substances, such as medications or chemicals. For reference, a single grain of sand typically weighs around 50 milligrams.