ounce is commonly used as a unit of mass in the United States,
Canada and sometimes in Australia and New Zealand. This Calculator converts ounces
to grams (oz to g) and backwards grams to ounces.
One ounce = 28.349 523 grams or 437.5 grains. In
1958 the US and countries of the Commonwealth (Australia, Canada and
New Zealand) defined the mass of the international avoirdupois ounce
is defined to be equal to 28.349 523 grams. There are 16 ounces
in a pound.