Convert Grams to Troy Ounces
1 gram (g) equals 0.03215074657 troy ounces (oz t).
1 g = 0.03215074657 oz t
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk gram to troy ounce converter to paste a column from Excel.
How to Convert Gram to Troy Ounce
- 1 g = 0.03215074657 oz t
- 1 oz t = 31.1034768 g
- Example: convert 15 g to oz t: 15 g = 15 × 0.03215074657 oz t = 0.4822611985 oz t
Formula
oz t = g × 0.03215074656863
or oz t = g ÷ 31.1034768
Derivation from SI units:
- 1 g = 10⁻³ kg
- 1 oz t = 480 gr = 31.1034768 g (exact)
- 1 g = 0.001 kg ÷ 0.0311034768 kg per oz t = 0.03215074656863 oz t
Both units are defined exactly, so the factor is exact. Gram definition: gram; Troy Ounce definition: troy ounce.
Worked examples
- A 100 g gold bar is 3.215074657 oz t.
100 g × 0.03215074657 = 3.215074657 oz t - A kilo bar, 1000 g, is 32.15074657 oz t.
1000 g × 0.03215074657 = 32.15074657 oz t
Gram to Troy Ounce conversion table
| Grams (g) | Troy Ounces (oz t) |
|---|---|
| 0.1 g | 0.003215074657 oz t |
| 0.5 g | 0.01607537328 oz t |
| 1 g | 0.03215074657 oz t |
| 2 g | 0.06430149314 oz t |
| 5 g | 0.1607537328 oz t |
| 10 g | 0.3215074657 oz t |
| 14 g | 0.450110452 oz t |
| 20 g | 0.6430149314 oz t |
| 25 g | 0.8037686642 oz t |
| 28.35 g | 0.9114736652 oz t |
| 30 g | 0.9645223971 oz t |
| 50 g | 1.607537328 oz t |
| 75 g | 2.411305993 oz t |
| 100 g | 3.215074657 oz t |
| 113 g | 3.633034362 oz t |
| 125 g | 4.018843321 oz t |
| 150 g | 4.822611985 oz t |
| 200 g | 6.430149314 oz t |
| 250 g | 8.037686642 oz t |
| 300 g | 9.645223971 oz t |
| 454 g | 14.59643894 oz t |
| 500 g | 16.07537328 oz t |
| 750 g | 24.11305993 oz t |
| 1000 g | 32.15074657 oz t |
Where it's used
Gram weights of bullion and jewellery are converted to troy ounces to price them against spot quotations.
Gram to other weight and mass units
| Conversion | 1 g equals |
|---|---|
| gram to kilogram | 0.001 kg |
| gram to milligram | 1000 mg |
| gram to microgram | 1000000 µg |
| gram to metric ton | 0.000001 t |
| gram to pound | 0.002204622622 lb |
| gram to ounce | 0.03527396195 oz |
| gram to stone | 0.0001574730444 st |
| gram to short ton | 0.000001102311311 ton (US) |
| gram to long ton | 9.842065276 × 10⁻⁷ ton (UK) |
| gram to grain | 15.43235835 gr |
| gram to troy ounce | 0.03215074657 oz t |
| gram to carat | 5 ct |
Frequently asked questions
How many troy ounces are in a kilogram?
1 kg = 32.1507 oz t.
How many troy ounces are in 1 gram?
1 g = 0.03215074657 oz t.
How do I convert grams to troy ounces?
Multiply the value in g by 0.03215074657, or divide it by 31.1034768. For example, 15 g × 0.03215074657 = 0.4822611985 oz t.
Is the g to oz t conversion exact?
Yes. Both units are defined exactly, so the ratio is exact; its decimal form does not terminate and is shown here to 10 significant figures (more with the precision selector).
Sources
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 7, SI prefixes.
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "ounce (troy or apothecary)".
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert Grams to Troy Ounces. Retrieved October 17, 2026, from https://scientificconverters.com/mass/grams-to-troy-ounces/
IEEE
Scientific Converters, "Convert Grams to Troy Ounces," scientificconverters.com. Accessed: Oct. 17, 2026. [Online]. Available: https://scientificconverters.com/mass/grams-to-troy-ounces/