Convert Troy Ounce to grams
Western Europe · European Weight · active · modern
Conventional value The unit is customary but its modern value is settled and widely cited; the arithmetic itself is exact.
1 Troy Ounce = 31.1035 grams
grams = Troy Ounce × 31.1035
Convert any amount
Troy Ounce to grams table
| Troy Ounce | grams |
|---|---|
| 0.25 Troy Ounce | 7.77587 grams |
| 0.5 Troy Ounce | 15.5517 grams |
| 1 Troy Ounce | 31.1035 grams |
| 2 Troy Ounce | 62.207 grams |
| 3 Troy Ounce | 93.3105 grams |
| 4 Troy Ounce | 124.414 grams |
| 5 Troy Ounce | 155.517 grams |
| 10 Troy Ounce | 311.035 grams |
| 20 Troy Ounce | 622.07 grams |
| 25 Troy Ounce | 777.587 grams |
| 50 Troy Ounce | 1,555.17 grams |
| 100 Troy Ounce | 3,110.35 grams |
About the Troy Ounce
International precious metal standard. 1 oz t = 31.1035g.
- Symbol
- oz t
- Value in SI
- 1 Troy Ounce = 0.0311035 kilogram
- Typical use
- precious-metals, jewellery
- Source
- UnitConvertLab measurement atlas
Every atlas conversion routes through the SI kilogram. See our methodology and data provenance pages for how these values are sourced and verified.
Related units and variant risk
Other european weight units in the Western Europe family, least settled first. If your figure came from a land record, invoice or historical document rather than a calculator, check these before assuming a single standard.
Related conversions
Frequently asked
How many grams are in a Troy Ounce?
1 Troy Ounce = 31.1035 grams. Multiply the number of Troy Ounce by 31.1035 to get grams.
What is Troy Ounce used for?
International precious metal standard. 1 oz t = 31.1035g. It is classified as active and dates from the modern period.
Is the Troy Ounce value exact?
Yes for practical purposes. UnitConvertLab converts every atlas unit through the SI kilogram, so the arithmetic itself introduces no rounding beyond the digits shown.
How reliable is this Troy Ounce conversion?
Conventional value — The unit is customary but its modern value is settled and widely cited; the arithmetic itself is exact. Source: UnitConvertLab measurement atlas.
Cite this page
UnitConvertLab. (2026). Convert Troy Ounce to grams. UnitConvertLab. Retrieved from https://unitconvertlab.com/regional/troy-ounce-to-gram
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