Table Of Contents
Troy ounce to milligrams Conversion
1 troy ounce (oz t) is equal to 31103.4768 milligrams (mg).
1 oz t = 31103.4768 mg
or
1 mg = 0.00003215074657 oz t
Formula
To convert a mass from troy ounce (oz t) to milligrams (mg), multiply the mass in troy ounce by 31103.4768
m(mg) = m(oz t) × 31103.4768
Examples:
Convert 250 troy ounce to milligrams:
m(mg) = 250oz t × 31103.4768 = 7775869.2 mg
Conversion table
| Troy ounce (oz t) | Milligrams (mg) |
|---|---|
| 1 oz t | 31103.4768 mg |
| 2 oz t | 62206.9536 mg |
| 3 oz t | 93310.4304 mg |
| 5 oz t | 155517.384 mg |
| 10 oz t | 311034.768 mg |
| 20 oz t | 622069.536 mg |
| 25 oz t | 777586.92 mg |
| 50 oz t | 1555173.84 mg |
| 100 oz t | 3110347.68 mg |
| 250 oz t | 7775869.2 mg |
| 500 oz t | 1.55517384e7 mg |
| 1000 oz t | 3.11034768e7 mg |
| Milligrams (mg) | Troy ounce (oz t) |
|---|---|
| 1 mg | 3.215075e-5 oz t |
| 2 mg | 6.430149e-5 oz t |
| 3 mg | 9.645224e-5 oz t |
| 5 mg | 1.60754e-4 oz t |
| 10 mg | 3.21507e-4 oz t |
| 20 mg | 6.43015e-4 oz t |
| 25 mg | 8.03769e-4 oz t |
| 50 mg | 0.001607537 oz t |
| 100 mg | 0.003215075 oz t |
| 250 mg | 0.008037687 oz t |
| 500 mg | 0.016075373 oz t |
| 1000 mg | 0.032150747 oz t |
Frequently asked questions
How do I convert troy ounce to milligrams?
Multiply the value in troy ounce by 31103.4768 to get the result in milligrams. For example, 5 oz t × 31103.4768 = 155517.384 mg.
How many milligrams are in 1 troy ounce?
1 troy ounce (oz t) is equal to 31103.4768 milligrams (mg).
How do I convert milligrams back to troy ounce?
Use the inverse operation: divide the value in milligrams by 31103.4768 to get the result in troy ounce.
How accurate is the troy ounce to milligrams conversion?
The converter multiplies by the conversion factor 31103.4768 and rounds the result to 9 decimal places by default. You can increase or reduce the precision with the digits option on this page.
Sources
Conversion factors are based on internationally recognised standards:
- BIPM — The International System of Units (SI Brochure, 9th edition)
- ISO 80000-4:2019 — Quantities and units — Part 4: Mechanics
- NIST Handbook 44, Appendix C — General Tables of Units of Measurement (current edition)
- NIST Guide to the SI (SP 811), Appendix B.9: Factors for units listed by kind of quantity or field of science
- Circular of the Bureau of Standards No. 43: The Metric Carat (1st edition, issued November 1, 1913)
