Five-hundred grams is equal to 1 pound 1.6370 ounces. The pound, though often thought of as a unit of weight rather than mass, is actually a mass unit. However, the pound as it is used today is referred to as a mass unit in relation to the force of gravity.
The pound has been specified as exactly 453.59 grams, is divided into sixteen ounces and is used in the Imperial system of measurement. The abbreviation, lb, for pound comes from the latin phrase "libra pondo," which means "a pound by weight." The gram is another unit of mass that is used in the metric system of measurement.