**One hundred grams, or one hectogram, is 3.5274 ounces.** One hundred grams is also 1543.2 grains or 0.0157473 stone. One hundred grams is 64.301 pennyweights, a measure of troy weight. One hundred grams is 500 carats, a measure of weight used for gemstones.

The gram is a metric unit used for mass in the International System of Units, or SI. The gram was originally defined as absolute weight of a volume of pure water equal to the cube of the hundredth part of a meter, at the temperature of melting ice. Approximate examples of 100 grams of food are two small, fist-sized peaches or half a bagel.