Convert ounces to milligrams
Enter a ounces value below and convert to milligrams
oz
1 ounce ≈
28349.523 milligrams
* rounded result
Select how many decimal places the result will be rounded to:
How to convert ounces to milligrams
To convert ounces to milligrams, multiply a ounces value by 28349.523125.
Formula mg = oz × 28349.523125
Example: Convert 0.1 ounces to milligrams Calculations: 0.1 oz × 28349.523125 ≈ 2834.952 mg
Ounce (oz)
The ounce is a unit of mass in the imperial system, commonly used for lightweight items. It is equal to 1/16 of a pound, or 28.349523125 grams.
Milligram (mg)
The milligram is the unit of mass, commonly used to measure light weights. It is equal to 1/1000 of a gram, or about 0.000035274 ounces.