Ounces to grams (oz to g) conversion factors are listed below. To find out how many grams in an ounce, multiply by the conversion factors or use the converter.1 Ounce = 28.3495231 Grams, 1 Troy Ounce = 31.1034768 Grams. There are 28.3495231 grams in an ounce, because by definition 1 kilogram is 2.20462 pounds (35.27392 ounces) and there are 1000 grams in a kilogram, that makes 1000 / 35.27392 = 28.349 grams in an ounce.
For example, to find out how many grams there are in an ounce and a half, multiply the ounce value by the conversion factor, that makes 1.5 oz * 28.3495231 = 42.52 grams in an ounce and a half. Ounce is a unit of mass in US customary and imperial measurement systems. There are 16 ounces in a pound and 35.274 ounces in a kilogram. The abbreviation is "oz". Gram is a unit of mass in metric system. There are 28.349 grams in an ounce, 453.592 grams in a pound and 1000 grams in a kilogram. The abbreviation is "g".
