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μg to milligram conversion -
Milligram to μg conversion

Convert micrograms to milligrams and vice versa


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Microgram (µg) and Milligram (mg)

A microgram (µg) and a milligram (mg) are both units of mass used in the metric system. This system, used worldwide for scientific, educational, and daily applications, bases each unit on factors of ten.


A microgram is a very small unit of mass, equal to one millionth (1/1,000,000) of a gram or one thousandth (1/1,000) of a milligram. The symbol for microgram is µg, where the Greek letter 'mu' (µ) is used to represent 'micro'.

This unit is often used in medical and scientific contexts, where very small weights need to be measured. For example, vitamins and other dietary supplements are often measured in micrograms.


A milligram, on the other hand, is larger than a microgram. It is equal to one thousandth (1/1,000) of a gram. The term 'milli' comes from the Latin word for thousand.

Milligrams are used in various situations, including the dosage of some medications and the measurement of small weights in scientific experiments.

The ratio between µg and mg

There is a set ratio between micrograms and milligrams. One milligram is equal to 1000 micrograms. In other words, if you have an amount in micrograms and you want to convert it to milligrams, you would divide that number by 1000.

1 microgram = 0.001 milligram

Conversely, if you have an amount in milligrams and you want to convert it to micrograms, you would multiply that number by 1000.

1 milligram = 1000 micrograms

The importance of accuracy

Both µg and mg are important for measuring very small amounts. The choice between using µg or mg often depends on the specific requirements for accuracy in the measurement. In some cases, a small deviation in the measurement can have significant consequences, such as in the dosage of medication. Therefore, it is essential to use the correct unit and perform the conversion accurately.

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