The formula to convert 100 grams to ounces is grams times 0.03 ounces per gram, as in the formula 100 grams times 0.03 ounces per gram equals 3.52 ounces. In the formula, the gram units cancel out, leaving only the ounces.
Grams are a unit of weight in the metric system of measurement. One kilogram is equal to 1,000 grams. The metric system is commonly used in scientific contexts and as the standard measuring system throughout most of the world. Ounces are part of the imperial system of measurement. There are 16 ounces in 1 pound. Ounces are used in both the United States and Canada.