📏 Milligrams to Ounces Converter
Convert milligrams (mg) to ounces (oz) instantly, with the formula, a worked example and a conversion table.
Quick answer: 1 milligram (mg) = 0.000035274 ounces (oz). Formula: oz = mg × 0.000035274.
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Milligrams to Ounces Converter inputs
Result
Milligrams to Ounces conversion table
| Milligrams (mg) | Ounces (oz) |
|---|---|
| 0.1 mg | 0.0000035274 oz |
| 0.5 mg | 0.000017637 oz |
| 1 mg | 0.000035274 oz |
| 2 mg | 0.0000705479 oz |
| 3 mg | 0.0001058219 oz |
| 5 mg | 0.0001763698 oz |
| 10 mg | 0.0003527396 oz |
| 20 mg | 0.0007054792 oz |
| 25 mg | 0.000881849 oz |
| 50 mg | 0.0017636981 oz |
| 100 mg | 0.0035273962 oz |
| 1,000 mg | 0.035273962 oz |
Other weight conversions
How to convert milligrams to ounces
Multiply the number of milligrams by 0.000035274 to get ounces: oz = mg × 0.000035274.
Example: 5 mg = 0.0001763698 oz.
The milligram (mg) and the ounce (oz) are both units of weight. Need the opposite direction? Use the oz to mg converter.
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Metric and imperial units
The metric system (SI) is used by almost every country and by science worldwide. Its units scale by powers of ten – 1 kilometer is 1,000 meters, 1 meter is 100 centimeters – which makes conversions inside the system easy. The imperial and US customary systems (inches, feet, pounds, gallons) are still used daily in the United States and partly in the UK.
Since 1959 the inch has been defined as exactly 2.54 centimeters and the pound as exactly 0.45359237 kilograms, so conversions between the two systems are exact. Note that a US gallon (3.785 L) and an imperial gallon (4.546 L) are different – choose the right one above.
This converter covers 10 categories and 66 units: length, weight, temperature, volume, area, speed, time, data, energy, pressure.
Frequently asked questions
How many ounces are in a milligram?
1 milligram = 0.000035274 ounces.
How do I convert milligrams to ounces?
Use the formula oz = mg × 0.000035274. For example, 5 mg = 0.0001763698 oz.
How do I convert ounces back to milligrams?
1 ounce = 28,349.523 milligrams. Use the oz to mg converter linked on this page.
Are these conversions exact?
Yes – all factors use the internationally defined values (for example 1 inch = 2.54 cm exactly, 1 pound = 0.45359237 kg exactly). Results are rounded to 8 significant digits for display.