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Convert gold weight from troy ounce to gram.
| Troy Ounce | Gram | 24K Gold Value |
|---|---|---|
| 1 Troy Ounce | 31.1035 Gram | $ 4,117.99 |
| 2 Troy Ounce | 62.207 Gram | $ 8,235.98 |
| 5 Troy Ounce | 155.5174 Gram | $ 20,589.94 |
| 10 Troy Ounce | 311.0348 Gram | $ 41,179.88 |
| 25 Troy Ounce | 777.5869 Gram | $ 102,949.70 |
| 50 Troy Ounce | 1,555.1738 Gram | $ 205,899.40 |
| 100 Troy Ounce | 3,110.3477 Gram | $ 411,798.81 |
One troy ounce equals 31.1035 gram, because a troy ounce weighs 31.1035 grams and a gram weighs 1.0000 grams. The table above applies this factor across common quantities and shows the live 24K gold value of each.
For a custom amount, karat, or currency, use the gold converter. See more conversions below, or check the gold price today.
When the news says gold is at a given price, that figure is for one troy ounce — 31.1035 grams — of pure metal. Converting ounces to grams is how that headline becomes something usable at a jewelry counter: divide the per-ounce price by 31.1035 for the per-gram rate.
The same conversion sizes up bullion coins: a 1 oz coin is 31.1 g, a half-ounce 15.55 g, a quarter-ounce 7.78 g, and a tenth-ounce 3.11 g. Multiply any of those weights by the per-gram rate (and the karat purity, for jewelry) to estimate metal value.
Divide by 31.1035. That gives the pure (24K) per-gram rate; multiply by 0.916 or 0.75 for 22K and 18K jewelry values.
A 1 oz bullion coin contains 31.1035 g of fine gold. Alloyed coins like the Krugerrand or 22K Eagle weigh slightly more in total, but the fine gold content is still one troy ounce.