Convert Milligrams to Ounces
mg to oz · weight & mass conversion
What are milligrams and ounces?
A milligram is one-thousandth of a gram, used for medication doses and tiny quantities. An ounce is 1/16 of a pound (about 28.35 g), common for food portions and mail in the US. For scale: a 70 kg adult weighs about 154 lb, and a bag of sugar is usually 1 kg (2.2 lb).
How to convert milligrams to ounces
1 mg = 0.000035274 oz. To convert, multiply the number of milligrams by 0.000035274. For example, 5 mg = 0.00017637 oz, and 20 mg = 0.00070548 oz. To go the other way, multiply ounces by 28,349.5 (since 1 oz = 28,349.5 mg).
Milligrams to Ounces conversion table
| Milligrams (mg) | Ounces (oz) |
|---|---|
| 1 | 0.000035274 |
| 2 | 0.000070548 |
| 5 | 0.00017637 |
| 10 | 0.00035274 |
| 25 | 0.00088185 |
| 50 | 0.0017637 |
| 100 | 0.0035274 |
FAQ
What is 1 mg in oz?
1 mg = 0.000035274 oz. To convert any amount, multiply the number of milligrams by 0.000035274.
How do I convert ounces back to milligrams?
Go the other way: 1 oz = 28,349.5 mg, so multiply ounces by 28,349.5 to get milligrams.
Is a milligram bigger than a ounce?
No — 1 mg is the smaller unit, equal to 0.000035274 oz (it takes 28,349.5 mg to make one oz).
Are these weight & mass conversions exact?
They use the standard internationally-defined conversion factors. Results are rounded to six significant figures for readability, which is accurate enough for everyday and most technical use.