1 Ounce Troy = 31.1033 Grams
1 Ounce Troy = 20 dwt (Pennyweight)
12 Ounces Troy = 1 Pound Troy
14.5833 Ounces Troy = 1 Pound Avoirdupois
0.9114 Ounce Troy = 1 Ounce Avoirdupois
32.15 Ounce Troy = 1 Kilogram
1 Gram = 5.0 Karats
1 Gram = 0.643 dwt
1.5552 Grams = 1 dwt
28.3495 Grams = 1 Ounce Avoirdupois
1000 Grams = 1 Kilogram
240 dwt = 1 Pound Troy
643.01 dwt = 1 Kilogram
18.2291 dwt = 1 Ounce Avoirdupois
291.666 dwt = 1 Pound Avoirdupois
1 Kilogram = 2.68 Pounds Troy
1 Kilogram = 35.2740 Ounces Avoirdupois
1 Kilogram = 2.2046 Pounds Avoirdupois
Metric Ton = 1,000 Kilograms
1 Inch = 25.40 Millimeters
1 Millimeter = 0.0394 Inch

Karat Gold Values
8 K = .333 or 33.3% pure
10 K = .416 or 41.6% pure
14 K = .583 or 58.3% pure
16 K = .666 or 66.6% pure
18 K = .75 or 75% pure
22 K = .916 or 91.6% pure
24 K = 100% pure