How to convert milligrams to ounces
To convert a measurement in milligrams to ounces, multiply the value by 0.000035273962. The conversion factor comes from the relationship between both units and the kilogram.
For example, to convert 5 mg to ounces: 5 × 0.000035273962 = 0.00017636981 oz.
What is a milligram?
A milligram is a metric unit of mass equal to one thousandth of a gram (0.001 g) or one millionth of a kilogram. Part of the original metric system, the milligram derives from the Latin 'mille' (thousand). It became indispensable in pharmacy and medicine, where drug doses are almost always expressed in milligrams.
Common uses of milligrams include: Medication and supplement dosages; Nutrient amounts on nutrition labels (sodium, vitamins); Laboratory chemistry and analytical work; Gunpowder and reloading measurements.
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.
Milligrams to ounces worked examples
Here are some common values converted:
1 mg = 0.000035273962 oz 5 mg = 0.00017636981 oz 10 mg = 0.000352739619 oz 50 mg = 0.001763698097 oz 100 mg = 0.003527396195 oz
Frequently asked questions
How many ounces are in one milligram?
One milligram (mg) equals 0.000035273962 ounces (oz). Multiply any value in milligrams by 0.000035273962 to convert to ounces.
How do I convert milligrams to ounces?
Multiply the value in milligrams by 0.000035273962. For example, 5 mg × 0.000035273962 = 0.00017636981 oz.
How do I convert ounces to milligrams?
Multiply the value in ounces by 28,349.5231, or divide by 0.000035273962. Use the swap button on the converter above to reverse the direction.
Is the milligram to ounce 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 milligrams to ounces?
The formula is: oz = mg × 0.000035273962. This comes from the definition of both units relative to the kilogram.