Ounce

The ounce (abbreviated: oz, the old Italian word onza, now spelled oncia; apothecary symbol: ℥) is a unit of mass with several definitions, the most commonly used of which are equal to approximately 28 grams. The ounce is used in a number of different systems, including various systems of mass that form part of the imperial and United States customary systems. Its size can vary from system to system. The most commonly used ounces today are the in... more

Also known as:

  • Avoirdupois ounce,
  • Dry ounce,

Unit of Mass

Weightmass In Kilograms:

  • 0.02835 kg (0.0625 lb )
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Unit Profile

Canonical Abbreviation:

  • oz

Dimension:

Abbreviation(s):

  • oz av
  • oz
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