Troy Ounce
A troy ounce (ozt) is the internationally accepted unit of measure for precious metals. It weighs 31.1035 grams — approximately 10% heavier than the avoirdupois ounce (28.35 g) used for everyday items.
Troy Weight Conversions
| Unit | Grams | Troy Ounces |
|---|---|---|
| 1 Troy Ounce | 31.1035 g | 1.000 ozt |
| 1 Avoirdupois Ounce | 28.3495 g | 0.9115 ozt |
| 1 Kilogram | 1,000 g | 32.1507 ozt |
| 1 Troy Pound (12 ozt) | 373.24 g | 12.000 ozt |
| 1 Pennyweight (dwt) | 1.5552 g | 0.0500 ozt |
Common Bullion Weights
- 1/10 oz, 1/4 oz, 1/2 oz, 1 oz — Standard fractional and full gold coins (Eagles, Maples)
- 1 oz, 10 oz, 100 oz — Common silver bar sizes
- 1 oz, 10 oz, 1 kilo — Common gold bar sizes from major refiners
- 400 oz — London Good Delivery bar (institutional standard)
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