Gold price calculator by karat
Gold price calculator
Enter the spot price per troy ounce to see per-gram prices by karat
$
per troy oz
Loading live price…
24K
99.9% pure
—
22K
91.7% pure
—
21K
87.5% pure
—
18K
75.0% pure
—
14K
58.3% pure
—
1 troy oz = 31.1035 g · Prices shown per gram at each karat purity
How it's calculated: price per gram = (spot price ÷ 31.1035) × (karat ÷ 24). E.g. for 18K: (spot ÷ 31.1035) × (18 ÷ 24).