Gold Weight Converter
Switch between grams, troy ounces (ozt), regular ounces, pounds, and kilograms. For precious metals, 1 ozt = 31.1035 g—that matches spot quotes and mint weights. Want a short topic page without the full tool? See troy ounce → gram.
Weight Converter
Convert between grams, ounces, pounds
Equivalent to:
Gold Ounce vs Troy Ounce (ozt) — Why It’s Different
Precious metals are priced in troy ounces (ozt). A troy ounce is 31.1035g. A regular ounce (avoirdupois) is 28.3495g. If you use the wrong ounce, your gold weight (and value estimate) will be off by about 9.7%.
Troy ounce (ozt)
Used for gold, silver, and platinum spot prices and bullion specs.
1 ozt = 31.1035 g
Avoirdupois ounce (oz)
Used for everyday weight (food, parcels, general scales).
1 oz = 28.3495 g
In bullion listings, “gold ounce” almost always means troy ounce. On a general-purpose scale, “oz” usually means avoirdupois.
Pennyweight (dwt) and Grains — Common Jewelry Units
Some jewelers and scrap buyers still use pennyweight (dwt) and grains (gr). These belong to the troy system: 20 dwt = 1 troy ounce, and 24 gr = 1 dwt.
| Unit | Equals | Notes |
|---|---|---|
| 1 troy ounce (ozt) | 31.1035 g | Precious metals market standard |
| 1 pennyweight (dwt) | 1.5552 g | 1 dwt = 1/20 ozt |
| 1 grain (gr) | 0.0648 g | 24 gr = 1 dwt |
Quick Conversion Table (Most-Used)
Quick reference for common conversions used in “troy ounce to grams” and “gold ounce vs troy ounce” searches.
| Input | Grams (g) | Troy ounces (ozt) | Ounces (oz) |
|---|---|---|---|
| 1 ozt | 31.1035 | 1 | 1.0971 oz |
| 1 oz | 28.3495 | 0.9115 ozt | 1 |
| 10 g | 10 | 0.3215 ozt | 0.3527 oz |
| 1 kg | 1000 | 32.1507 ozt | 35.2740 oz |
| 1 lb | 453.592 | 14.5833 ozt | 16 oz |
FAQ
1 troy ounce (ozt) = 31.1035 grams. Precious metals like gold and silver are quoted in troy ounces, not regular ounces.
A “gold ounce” usually means a troy ounce (31.1035g). A regular (avoirdupois) ounce is 28.3495g. Mixing them up can cause about a 9.7% error.