Troy Ounces to Grams Converter
Enter the weight in troy ounces below to convert it to grams.
Convert Troy Ounces to Grams
Enter a value in troy ounces (oz t) to convert to grams (g).
Troy Ounce to Gram Conversion Table
Table showing various troy ounce measurements converted to grams. Click any preset value or arrow to load it into the converter.
| Troy Ounces (oz t) | Grams (g) |
|---|---|
| 0.5 oz t | 15.5517384 g |
| 1 oz t | 31.1034768 g |
| 2 oz t | 62.2069536 g |
| 5 oz t | 155.517384 g |
| 10 oz t | 311.034768 g |
| 15 oz t | 466.552152 g |
| 20 oz t | 622.069536 g |
| 25 oz t | 777.58692 g |
| 30 oz t | 933.104304 g |
| 50 oz t | 1,555.17384 g |
How to Convert Troy Ounces to Grams
To convert troy ounces to grams, multiply the weight by the following conversion ratio: 31.1034768 grams/troy ounce.
Since one troy ounce is equal to 31.1034768 grams, you can use this simple formula to convert:
The weight in grams is equal to the weight in troy ounces multiplied by 31.1034768.
For example, here's how to convert 1 troy ounces to grams using the formula above.
How Many Grams Are in a Troy Ounce?
There are 31.1034768 grams in a troy ounce, which is why we use this value in the formula above.
Our troy ounce to gram calculator automatically converts your weight measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
Troy Ounces and grams are both units used to measure weight. Keep reading to learn more about each unit.
What Is a Troy Ounce?
A troy ounce is a unit of weight equal to 0.0311035 kilograms (kg), the base unit for weight. Precious metal (gold, silver, platinum) mass standard equal to 480 grains or exactly 31.1034768 grams. [1]
The troy ounce is classified as a standard unit of weight. Troy Ounces can be abbreviated as oz t; for example, 1 troy ounce can be written as 1 oz t.
When working with troy ounces (oz t) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.
In practice, troy ounces (oz t) are widely used across standard weight applications within international standard workflows, engineering documentation, and technical data sheets.
What Is a Gram?
A gram is a unit of weight equal to 1/1,000 of a kilogram (0.001 kg). Metric unit equal to one-thousandth of a kilogram (0.001 kg). [2]
The gram is classified as a metric and SI-compatible unit of weight. Grams can be abbreviated as g; for example, 1 gram can be written as 1 g.
When working with grams (g) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.
In practice, grams (g) are widely used across fine-tolerance laboratory, analytical, and micro-scale weight measurements within SI metric workflows, engineering documentation, and technical data sheets.
When converting weight between troy ounces (oz t) and grams (g), keep full floating-point precision (1 oz t = 31.1034768 g; 1 g = 0.0321507 oz t) during intermediate calculations and round only the final gram figure to match your instrument tolerance.
More Troy Ounce & Gram Conversions
Need to calculate in the opposite direction? Use our grams to troy ounces converter (g to oz t) to switch your starting unit immediately. You can also explore related tools such as converting ounces to grams, converting kilograms to grams, or converting kilograms to pounds.
Convert from Troy Ounces
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Frequently Asked Questions
References
- [1]NIST OWM StandardNIST OWM (SI Units — Mass)·Mass & Weight Metrology Standard — Troy Ounces (oz t) to Grams (g)
- [2]NIST HB 44 SpecificationNIST HB 44 (NIST Handbook 44 (Current Ed.))·Unit Specifications: Troy Ounce (oz t) & Gram (g)
- [3]BIPM ReferenceBIPM (SI Base Unit: Kilogram (kg))·Conversion Factors & Mathematical Basis (oz t to g)