How many grams is a troy ounce?
How many grams is a troy ounce? 31.1034768 grams A troy ounce is a unit of measure used for weighing precious metals that dates back to the Middle Ages. Originally used in Troyes, France, one troy ounce is equal to 31.1034768 grams, according to the U.K. Royal Mint. Why is Read more…