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 an avoirdupois ounce?
An avoirdupois ounce is a unit of weight in the avoirdupois system, commonly used in the United States and other countries for measuring goods that are typically sold by weight.
It is equal to 1/16 of a pound or approximately 28.35 grams. The avoirdupois system is based on a pound of 16 ounces, with larger units such as tons and pounds used for heavier measurements.