In 1 ounces there are 28,349,523.125 micrograms. Meanwhile in 1 micrograms there are 3.52740e-8 ounces. Keep reading to learn more about each unit of measure and how they are calculated. Or just use the Micrograms to Ounces calculator above to convert any number.
* Values rounded to 6 decimal places for readability
To convert ounces (oz) to micrograms (µg), multiply by the right factor and keep units straight.
Formula (oz to µg):
micrograms (µg) = ounces (oz) × 28,349,523.125
Example:
Tip: This is a mass (weight) conversion, not volume. Only convert oz to µg when both values refer to weight.
1 ounce equals 28,349,523.125 micrograms (mcg). This uses the avoirdupois ounce, which is the most common ounce for weight.
Use this conversion:
If you need the reverse:
An ounce can mean weight or fluid volume.
Micrograms measure mass, so only a weight ounce converts directly to micrograms.
Most oz to mcg conversions use the avoirdupois ounce:
Other ounce types exist, but they are not used as often.
Half an ounce is:
0.1 ounce is:
If the label shows oz (weight), convert directly using the formula. If it shows fl oz, you need the product’s density to convert volume to mass. Without density, you can’t get an accurate microgram value.
Micrograms are tiny.
These units step down by factors of 1,000:
Yes, it can. Micrograms often matter in lab work, medicine, and dosing. Use more decimal places if you need accuracy. For quick estimates, rounding to the nearest whole microgram or milligram may be enough, based on your use.
Yes. mcg and µg both mean microgram. “mcg” is common on labels to avoid confusion with the Greek letter.
Yes. Divide by the same factor:
Example:
The Calculate Box tool to convert ounces to micrograms uses the open source script Convert.js to convert units of measurement. To use this tool, simply type a ounces value in the box and have it instantly converted to micrograms.