How to convert milligrams to ounces
To convert milligrams to ounces, multiply by 0.0000352739619496. Weight and mass conversions matter for cooking, shipping, fitness tracking, medicine and trade.
Milligram to Ounce conversion table
| Milligram (mg) | Ounce (oz) |
|---|---|
| 0.1 mg | 0.00000352739619496 oz |
| 0.5 mg | 0.0000176369809748 oz |
| 1 mg | 0.0000352739619496 oz |
| 2 mg | 0.0000705479238992 oz |
| 3 mg | 0.000105821885849 oz |
| 4 mg | 0.000141095847798 oz |
| 5 mg | 0.000176369809748 oz |
| 10 mg | 0.000352739619496 oz |
| 20 mg | 0.000705479238992 oz |
| 25 mg | 0.00088184904874 oz |
| 50 mg | 0.00176369809748 oz |
| 100 mg | 0.00352739619496 oz |
| 500 mg | 0.0176369809748 oz |
| 1,000 mg | 0.0352739619496 oz |
About the units
Milligram (mg)
A milligram is one thousandth of a gram, typically used for medication doses and nutrition labels.
Ounce (oz)
An avoirdupois ounce is 1/16 of a pound, exactly 28.349523125 grams, used for food portions and postage.
How to use this converter
- Type the number of milligrams (mg) in the input box.
- The result in ounces appears instantly — no button needed.
- See the same value in every other weight unit just below.
- Use “Swap units” to convert ounces back to milligrams.
Tips for better results
- Double-check which system a unit belongs to (for example US vs UK gallons).
- Use the swap button to convert in the opposite direction instantly.
- Bookmark the conversions you use most — each pair has its own page.
Frequently asked questions
How many ounces are in one milligram?
One milligram equals 0.0000352739619496 ounces. 0.0000352739619496 is the exact factor used by this converter.
How do I convert milligrams to ounces?
Multiply the value in milligrams by 0.0000352739619496. To go the other way, multiply ounces by 28,349.523125.
What is 10 mg in oz?
10 mg = 0.000352739619496 oz. Also, 5 mg = 0.000176369809748 oz and 100 mg = 0.00352739619496 oz.
What is the difference between a milligram and a ounce?
A milligram is one thousandth of a gram, typically used for medication doses and nutrition labels. An avoirdupois ounce is 1/16 of a pound, exactly 28.349523125 grams, used for food portions and postage.
Is this tool free and private?
Yes — the Milligram to Ounce is completely free with no sign-up, and it runs entirely in your browser, so the values you enter are never uploaded to our servers.
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