Grams and ounces are both units of measurement associated with the concepts of mass and weight. The gram is a metric unit for measuring mass. Ounces are typically used in the United States to measure mass. This ounce is known as the avoirdupois ounce. It results from dividing a pound into 16 equal parts. The troy ounce is a slightly different ounce, resulting from the division of a Roman pound into 12 equal parts. You can convert grams into either of these ounces by noting the appropriate conversion factors.
Measure your object on a balance. Record the result in grams.
Multiply the number of grams by 0.035 ounce per gram. This will yield U.S. ounces. For example, 100 grams is equivalent to 3.5 ounces.
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Multiply the number of grams by 0.03215 troy ounces per gram. For example, 100 grams is equivalent to roughly 3.215 troy ounces.