Ounce (oz)
Definition: An ounce (symbol: oz) is a unit of mass in the imperial and US customary systems of measurement. It is defined as exactly 28.349523125 grams. The ounce is subdivided into 16 drams or 437.5 grains.
History/origin: The ounce has been used as a unit of measurement since ancient Roman times. The word "ounce" comes from the Latin "uncia" (a twelfth part). In 1959, the international avoirdupois ounce was defined as exactly 28.349523125 grams.
Current use: The ounce is primarily used in the United States, United Kingdom, and Canada. It is commonly used for measuring food products, precious metals, and various other items.
Pound (lbs)
Definition: The pound (symbol: lb) is a unit of mass used in the imperial and US customary systems of measurement. It is defined as exactly 0.45359237 kilograms. The pound is subdivided into 16 ounces.
History/origin: The pound has been used as a unit of weight since ancient times. The word "pound" comes from the Latin "libra" (scales). The modern pound was standardized in 1959 as exactly 0.45359237 kilograms.
Current use: The pound is primarily used in the United States, United Kingdom, and Canada. It is commonly used for measuring body weight, food products, and various other everyday items.