Grams to Troy Ounces Converter (g to oz t)
1 g ≈ 0.0321507 oz t (31.1034768 g per troy ounce). Convert grams of gold or silver to troy ounces, with g to oz t and oz t to g charts.
Troy Ounce (oz t) = Gram (g) × 0.0321507465686
Gram (g): The gram is one thousandth of a kilogram, the SI base unit of mass. It is used worldwide for food, postage and small quantities of almost anything.
Troy Ounce (oz t): The troy ounce is 480 grains, exactly 31.1034768 grams, about 10% heavier than an ordinary ounce. Gold, silver and platinum prices are quoted per troy ounce.
| Gram (g) | Troy Ounce (oz t) |
|---|---|
| 1 | 0.0321507465686 |
| 5 | 0.160753732843 |
| 10 | 0.321507465686 |
| 25 | 0.803768664216 |
| 50 | 1.60753732843 |
| 100 | 3.21507465686 |
Small gold bars, jewelry and scrap are weighed in grams, but the international price of gold and silver is quoted per troy ounce. Dividing grams by 31.1034768 converts between them, so a 50 g bar holds about 1.61 oz t and a kilobar about 32.15 oz t. A one-ounce coin, for comparison, holds 31.1 g of fine metal.
For jewelry, the gram weight includes the alloy, so the gold content is the weight times the purity: 18-karat gold is 75% gold and 14-karat about 58.3%. Convert that pure-gold figure to troy ounces before comparing it with a spot price.
How to use this tool
- Type a value in the Gram box to see it in troy ounces, or type in the Troy Ounce box to convert the other way.
- Press ⇄ to swap the two units, or Load example for a typical value.
- Check the charts below for common values; for other units, open the Weight & Mass converter.
Formula
Troy Ounce (oz t) = Gram (g) × 0.0321507465686
Gram (g) = Troy Ounce (oz t) × 31.1034768
Both factors come from exact definitions: 1 troy ounce = 31.1034768 grams and 1 gram = 0.0321507465686 troy ounces (shown to 12 significant digits).
Example
Two conversions worked with the same factors the converter uses:
50 g × 0.0321507465686 ≈ 1.60754 oz t
2 oz t × 31.1034768 ≈ 62.207 g
Gram to Troy Ounce chart
Common values from grams to troy ounces, rounded to four decimal places.
| Gram (g) | Troy Ounce (oz t) |
|---|---|
| 1 | 0.0322 |
| 2 | 0.0643 |
| 2.5 | 0.0804 |
| 5 | 0.1608 |
| 8 | 0.2572 |
| 10 | 0.3215 |
| 20 | 0.643 |
| 31.1035 | 1 |
| 50 | 1.6075 |
| 62.2 | 1.9998 |
| 100 | 3.2151 |
| 150 | 4.8226 |
| 200 | 6.4301 |
| 250 | 8.0377 |
| 500 | 16.0754 |
| 1,000 | 32.1507 |
| 5,000 | 160.7537 |
| 12,500 | 401.8843 |
Troy Ounce to Gram chart
The reverse direction for values people often look up.
| Troy Ounce (oz t) | Gram (g) |
|---|---|
| 0.1 | 3.1103 |
| 0.2 | 6.2207 |
| 0.3 | 9.331 |
| 0.5 | 15.5517 |
| 0.75 | 23.3276 |
| 1 | 31.1035 |
| 1.5 | 46.6552 |
| 4 | 124.4139 |
| 5 | 155.5174 |
| 8 | 248.8278 |
| 20 | 622.0695 |
| 40 | 1,244.14 |
| 100 | 3,110.35 |
Gold items weighed in grams
| Item | Gram (g) | Troy Ounce (oz t) |
|---|---|---|
| One-gram minted gold bar | 1 | 0.0322 |
| Gold plating on an Olympic gold medal, minimum | 6 | 0.1929 |
| British gold sovereign, total weight | 7.98 | 0.2566 |
| Fifty-gram minted gold bar | 50 | 1.6075 |
| Hundred-gram minted gold bar | 100 | 3.2151 |
| Kilobar (one-kilogram gold bar) | 1,000 | 32.1507 |
Quick mental estimate
Divide the grams by 31 for a quick figure: 100 g → about 3.2 oz t, roughly 0.3% high. Every 311 g is almost exactly 10 oz t, which makes a handy check for larger amounts.
Use the converter or the charts when the exact figure matters.
The two units
Gram (g): The gram is one thousandth of a kilogram, the SI base unit of mass. It is used worldwide for food, postage and small quantities of almost anything.
Troy Ounce (oz t): The troy ounce is 480 grains, exactly 31.1034768 grams, about 10% heavier than an ordinary ounce. Gold, silver and platinum prices are quoted per troy ounce.
Frequently asked questions
How many troy ounces are in a kilogram?
About 32.15 oz t (32.1507466 to nine figures). A kilobar is therefore slightly more than 32 troy ounces, and a 100 g bar about 3.215 oz t.
How do I work out the gold in a piece of jewelry?
Multiply the weight in grams by the purity (0.75 for 18K, 0.585 for 14K stamped 585), then divide by 31.1034768 for troy ounces. A 10 g 18K chain holds 7.5 g of gold, about 0.24 oz t.
Why are gold prices quoted per troy ounce when bars are sold in grams?
The troy ounce is the traditional unit of the London bullion market and of most bullion coins, so benchmark prices use it. Refiners also make bars in metric sizes for buyers who think in grams, which is why both units appear side by side. Bars are usually stamped with their weight and fineness, such as 999.9 for gold.
How precise is the result?
The converter uses the exact definitions above with browser floating-point arithmetic and shows up to 12 significant digits. The charts round to four decimal places for reading.
Sources
Last updated:
Page address with these inputs: https://kakao.mobile/tools/gram-to-troy-ounce-converter/
Cite or embed this tool
kakaoCalc. (2026, November 8). Grams to Troy Ounces Converter (g to oz t). https://kakao.mobile/tools/gram-to-troy-ounce-converter/
“Grams to Troy Ounces Converter (g to oz t).” kakaoCalc, 8 Nov. 2026, kakao.mobile/tools/gram-to-troy-ounce-converter/.
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