Convert Micrograms to Troy Ounces
1 microgram (µg) equals 3.215074657 × 10⁻⁸ troy ounces (oz t).
1 µg = 3.215074657e-8 oz t
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk microgram to troy ounce converter to paste a column from Excel.
How to Convert Microgram to Troy Ounce
- 1 µg = 3.215074657 × 10⁻⁸ oz t
- 1 oz t = 31103476.8 µg
- Example: convert 15 µg to oz t: 15 µg = 15 × 3.215074657 × 10⁻⁸ oz t = 4.822611985 × 10⁻⁷ oz t
Formula
oz t = µg × 3.215074656863 × 10⁻⁸
or oz t = µg ÷ 31103476.8
Derivation from SI units:
- 1 µg = 10⁻⁹ kg = 10⁻³ mg
- 1 oz t = 480 gr = 31.1034768 g (exact)
- 1 µg = 1 × 10⁻⁹ kg ÷ 0.0311034768 kg per oz t = 3.215074656863 × 10⁻⁸ oz t
Both units are defined exactly, so the factor is exact. Microgram definition: microgram; Troy Ounce definition: troy ounce.
Worked examples
- A reading of 50 µg converts to 0.000001607537328 oz t.
50 µg × 3.215074657 × 10⁻⁸ = 0.000001607537328 oz t - A value of 250 µg is 0.000008037686642 oz t.
250 µg × 3.215074657 × 10⁻⁸ = 0.000008037686642 oz t
Microgram to Troy Ounce conversion table
| Micrograms (µg) | Troy Ounces (oz t) |
|---|---|
| 0.1 µg | 3.215074657 × 10⁻⁹ oz t |
| 1 µg | 3.215074657 × 10⁻⁸ oz t |
| 5 µg | 1.607537328 × 10⁻⁷ oz t |
| 10 µg | 3.215074657 × 10⁻⁷ oz t |
| 25 µg | 8.037686642 × 10⁻⁷ oz t |
| 50 µg | 0.000001607537328 oz t |
| 100 µg | 0.000003215074657 oz t |
| 125 µg | 0.000004018843321 oz t |
| 150 µg | 0.000004822611985 oz t |
| 200 µg | 0.000006430149314 oz t |
| 250 µg | 0.000008037686642 oz t |
| 400 µg | 0.00001286029863 oz t |
| 500 µg | 0.00001607537328 oz t |
| 1000 µg | 0.00003215074657 oz t |
| 5000 µg | 0.0001607537328 oz t |
Where it's used
Micrograms are used for vitamins and trace nutrients (vitamin D, B12, folate), while troy ounces appear in gold, silver and platinum prices. Both measure mass (commonly called weight), so the conversion is a fixed factor.
Microgram to other weight and mass units
| Conversion | 1 µg equals |
|---|---|
| microgram to kilogram | 1 × 10⁻⁹ kg |
| microgram to gram | 0.000001 g |
| microgram to milligram | 0.001 mg |
| microgram to metric ton | 1 × 10⁻¹² t |
| microgram to pound | 2.204622622 × 10⁻⁹ lb |
| microgram to ounce | 3.527396195 × 10⁻⁸ oz |
| microgram to stone | 1.574730444 × 10⁻¹⁰ st |
| microgram to short ton | 1.102311311 × 10⁻¹² ton (US) |
| microgram to long ton | 9.842065276 × 10⁻¹³ ton (UK) |
| microgram to grain | 0.00001543235835 gr |
| microgram to troy ounce | 3.215074657 × 10⁻⁸ oz t |
| microgram to carat | 0.000005 ct |
Frequently asked questions
How many troy ounces are in 1 microgram?
1 µg = 3.215074657 × 10⁻⁸ oz t.
How do I convert micrograms to troy ounces?
Multiply the value in µg by 3.215074657 × 10⁻⁸, or divide it by 31103476.8. For example, 15 µg × 3.215074657 × 10⁻⁸ = 4.822611985 × 10⁻⁷ oz t.
Is the µg 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 Micrograms to Troy Ounces. Retrieved October 17, 2026, from https://scientificconverters.com/mass/micrograms-to-troy-ounces/
IEEE
Scientific Converters, "Convert Micrograms to Troy Ounces," scientificconverters.com. Accessed: Oct. 17, 2026. [Online]. Available: https://scientificconverters.com/mass/micrograms-to-troy-ounces/