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There are a few different terms used to describe a measured amount of gold (gram, gain, troy ounce, troy pound, pennyweight) and it can be confusing if you are not familiar with the one being used. Use the charts below to convert any of these units of measure into another. Or, simply enter a weight into the calculator, select the unit of measure and get an instant conversion into four different units.
Note: When gold is referred to in ounces you should assume troy ounces unless specified otherwise. Likewise, when gold is referred to in pounds you should assume troy pounds. But, always make certain to clarify the units of measure before you purchase gold. You should also note that there are only 12 troy ounces in a troy pound, instead of 16 like in the avoirdupois (U.S.) system.
Examples:
1) Say you have a 5.6 grain nugget and want to know how much it weighs in grams. You look at the gram line on the grain chart
and see .065, so you multiply 5.6 x .065 and find that 5.6 grains equals 0.364 grams.
2) If you have 18.95 grams of gold and want to know how much that is in troy ounces you look at the troy ounces line on the
gram chart and see .032, so you multiply 18.95 x .032 and find that 18.95 grams equals .606 ounces troy.
Note that the numbers in these charts and calculator are approximate and rounded to the nearest 1/1000th.