Ounces to Milligrams Converter
Convert ounces (oz) to milligrams (mg)
Result
28,349.52313 mg
Milligrams
1 oz = 28,349.52313 mg
1 oz in other units
- 1Enter a valueType the number to convert
- 2Pick the unitsChoose what to convert from and to
- 3Read the resultSee it in every other unit too
How to convert ounces to milligrams
One ounce equals 28,349.52 milligrams, so multiply the number of ounces by 28,349.52.
mg = oz × 28,349.52
1 oz = 28,349.52 mg · 1 mg = 0.00003527396 oz
Worked example
To convert 5 ounces to milligrams: 5 oz × 28,349.52 = 1,41,747.6 mg.
About ounces (oz)
An ounce is 1/16 of a pound, exactly 28.349523125 g. It is used for food portions in the US and UK.
About milligrams (mg)
A milligram is one thousandth of a gram. Medicine doses and nutrition labels often use milligrams.
More conversions
Ounces to other units
Other units to Milligrams
Frequently asked questions
How many milligrams are in one ounce?
One ounce equals 28,349.52 milligrams.
How many ounces are in one milligram?
One milligram equals 0.00003527396 ounces.
How do I convert ounces to milligrams?
Use the formula mg = oz × 28,349.52. For example, 5 oz × 28,349.52 = 1,41,747.6 mg.