Precious Metals Weight Converter
Convert troy ounces, pennyweights, grains, grams, and avoirdupois units — commonly used for gold, silver, and platinum.
1 Troy Ounce (ozt) =31.1035 grams
All conversions
Troy Pound (troy lb)0.083333
Pennyweight (dwt)20.000064
Gram (g)31.1035
Kilogram (kg)0.031104
Grain (gr)480.000358
Avoirdupois Ounce (oz)1.097145
Avoirdupois Pound (lb)0.068572
Troy vs Avoirdupois
Precious metals (gold, silver, platinum) are measured in the troy system. A troy ounce (31.10 g) is heavier than an avoirdupois ounce (28.35 g) used for everyday goods. Always check which ounce is being quoted when buying metals.
Quick Reference
| Unit | ozt | g | dwt | grains | av oz |
|---|---|---|---|---|---|
| 1 troy ounce (ozt) | 1 | 31.1035 | 20 | 480 | 1.097145 |
| 1 pennyweight (dwt) | 0.05 | 1.55517 | 1 | 24 | 0.054857 |
| 1 gram | 0.032151 | 1 | 0.643017 | 15.432358 | 0.035274 |
| 1 troy pound | 12 | 373.24 | 240 | 5760 | 13.165724 |