Troy Ounce Conversions


The troy ounce is a metric used in weighing precious metals. The troy ounce is the equivalent of 31.1034768 grams, whereas the ounce is the equivalent of 28.349 grams.
Ounce, unit of weight in the avoirdupois system, equal to 1/16 pound (437 1/2 grains), and in the troy and apothecaries' systems, equal to 480 grains, or 1/12 pound.