• A troy ounce is a metric unit for measuring the weight of precious metals.
  • A troy ounce is equal to 31.1034768 grams.
  • A standard ounce is equivalent to 28.349 grams or about 10% less.
  • A troy pound (12 troy ounces) is lighter than a standard pound (14.6 troy ounces).
  • The troy ounce is the last remaining metric that is still used in the troy weighing system.