Convert troy ounces to grams and see what that amount of gold is worth at the live international price.
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1 troy ounce = 31.1035 gramsThe troy ounce is the unit used for gold and other precious metals. It is about 10% heavier than the ordinary (avoirdupois) ounce of 28.35 grams.
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Gold value at the live international price—Fine gold content: —
Troy ounces to grams: quick table
Troy ounces
Grams
24K value (USD)
1/10
3.11 g
—
1/4
7.78 g
—
1/2
15.55 g
—
1
31.10 g
—
2
62.21 g
—
5
155.52 g
—
10
311.03 g
—
32.15 (1 kg)
1,000.00 g
—
Troy ounce vs. ordinary ounce
Gold, silver and platinum are always quoted in troy ounces. One troy ounce weighs 31.1035 g, while the ordinary ounce used for food and parcels weighs 28.3495 g. Mixing them up undervalues gold by about 9%, a common mistake when converting the international price to grams.
Price per gram = price per troy ounce ÷ 31.1035
Other gold weight units
Kilogram: 1,000 g = 32.15 troy ounces. Used for large bars.
Tola: 11.6638 g = 0.375 troy ounces. Common in India, Pakistan and the Gulf.
Pennyweight (dwt): 1.555 g = 1/20 troy ounce. Used by some jewelers in the US.