Weight Converter
Mass in metric and imperial units.
Conversion
Ounces to Milligrams Converter
1 ounce = 28,349.52313 mg. Enter any value to convert ounces (oz) to milligrams (mg), or use the table below for common values.
Formula
mg = oz × 28,349.52313
Example: 10 oz = 283,495.2313 mg. To convert the other way, use oz = mg × 0.00003527396195.
Quick mental estimate: multiply by about 28,000.
Ounces to Milligrams conversion table
| Ounces (oz) | Milligrams (mg) |
|---|---|
| 1 oz | 28,349.52313 mg |
| 2 oz | 56,699.04625 mg |
| 3 oz | 85,048.56938 mg |
| 4 oz | 113,398.0925 mg |
| 5 oz | 141,747.6156 mg |
| 6 oz | 170,097.1388 mg |
| 7 oz | 198,446.6619 mg |
| 8 oz | 226,796.185 mg |
| 9 oz | 255,145.7081 mg |
| 10 oz | 283,495.2313 mg |
| 15 oz | 425,242.8469 mg |
| 20 oz | 566,990.4625 mg |
| 25 oz | 708,738.0781 mg |
| 30 oz | 850,485.6938 mg |
| 40 oz | 1,133,980.925 mg |
| 50 oz | 1,417,476.156 mg |
| 75 oz | 2,126,214.234 mg |
| 100 oz | 2,834,952.313 mg |
| 250 oz | 7,087,380.781 mg |
| 500 oz | 14,174,761.56 mg |
| 1,000 oz | 28,349,523.13 mg |
About ounces and milligrams
The avoirdupois ounce is 1/16 of a pound, or exactly 28.349523125 grams. It is used for food portions and parcels in the US.
The milligram is one thousandth of a gram, typically used for medicine doses, vitamins and nutrition labels.
Other Weight conversions
Frequently asked questions
How do I convert ounces to milligrams?
Use the formula mg = oz × 28,349.52313. For example, 10 oz = 283,495.2313 mg.
What is 1 ounce in milligrams?
1 oz = 28,349.52313 mg.
How do I convert milligrams back to ounces?
Use oz = mg × 0.00003527396195. 1 mg = 0.00003527396195 oz.