How to convert ounces to micrograms
To convert a measurement in ounces to micrograms, multiply the value by 28,349,523.125. The conversion factor comes from the relationship between both units and the kilogram.
For example, to convert 5 oz to micrograms: 5 × 28,349,523.125 = 141,747,615.625 µg.
What is a ounce?
An ounce is an imperial and US customary unit of mass equal to 1/16 of a pound or exactly 28.349523125 grams. The avoirdupois ounce descends from the Roman 'uncia' (one twelfth). It is distinct from the troy ounce used for precious metals, which is heavier at about 31.1 grams.
Common uses of ounces include: Food portions and recipe ingredients in the US; Postal and letter weights; Packaged goods net weight (cereal, snacks); Baby birth weights in the US.
What is a microgram?
A microgram is a metric unit of mass equal to one millionth of a gram (0.000001 g) or one billionth of a kilogram. The microgram (sometimes abbreviated 'mcg' in medicine to avoid confusion with 'mg') became important with the discovery of vitamins and hormones that are active in tiny quantities. The prefix 'micro' comes from the Greek for 'small'.
Common uses of micrograms include: Vitamin and trace-mineral dosages (e.g. vitamin D, B12); Hormone and potent drug amounts; Environmental contaminant concentrations; Analytical chemistry and toxicology.
Ounces to micrograms worked examples
Here are some common values converted:
1 oz = 28,349,523.125 µg 5 oz = 141,747,615.625 µg 10 oz = 283,495,231.25 µg 50 oz = 1,417,476,156.25 µg 100 oz = 2,834,952,312.5 µg
Frequently asked questions
How many micrograms are in one ounce?
One ounce (oz) equals 28,349,523.125 micrograms (µg). Multiply any value in ounces by 28,349,523.125 to convert to micrograms.
How do I convert ounces to micrograms?
Multiply the value in ounces by 28,349,523.125. For example, 5 oz × 28,349,523.125 = 141,747,615.625 µg.
How do I convert micrograms to ounces?
Multiply the value in micrograms by 0.000000035274, or divide by 28,349,523.125. Use the swap button on the converter above to reverse the direction.
Is the ounce to microgram conversion exact?
Yes. Since 1959 the international pound is defined as exactly 0.45359237 kg, so all weight conversions between metric and avoirdupois units use exact factors.
What is the formula for ounces to micrograms?
The formula is: µg = oz × 28,349,523.125. This comes from the definition of both units relative to the kilogram.