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Micrograms and Milligrams Converter

Convert between micrograms (mcg) and milligrams (mg) using this simple calculator tool. Conversion tables and formulae are also available further down.

Disclaimer: Whilst every effort has been made in building this calculator, we are not to be held liable for any damages or monetary losses arising out of or in connection with the use of it. This tool is here purely as a service to you, please use it at your own risk. Full disclaimer. Do not use calculations for anything where loss of life, money, property, etc could result from inaccurate calculations.

How many mcg are there in a mg?

1mg = 1000mcg. As there are 1,000 micrograms (mcg) in 1 milligram (mg), you can work out your answer by multiplying your mg figure by 1000.

How many mg are there in a mcg?

1mcg = 1/1000mg. There are 1,000 micrograms in 1 milligram. To work out your answer, divide your mcg figure by 1000.

Micrograms to milligrams conversion table
Microgram Milligram Microgram Milligram
1 mcg 0.001 mg 10 mcg 0.01 mg
2 mcg 0.002 mg 20 mcg 0.02 mg
3 mcg 0.003 mg 30 mcg 0.03 mg
4 mcg 0.004 mg 40 mcg 0.04 mg
5 mcg 0.005 mg 50 mcg 0.05 mg
6 mcg 0.006 mg 60 mcg 0.06 mg
7 mcg 0.007 mg 70 mcg 0.07 mg
8 mcg 0.008 mg 80 mcg 0.08 mg
9 mcg 0.009 mg 90 mcg 0.09 mg
10 mcg 0.01 mg 100 mcg 0.1 mg
Milligrams to micrograms conversion table
Milligram Microgram Milligram Microgram
1 mg 1000 mcg 10 mg 10000 mcg
2 mg 2000 mcg 20 mg 20000 mcg
3 mg 3000 mcg 30 mg 30000 mcg
4 mg 4000 mcg 40 mg 40000 mcg
5 mg 5000 mcg 50 mg 50000 mcg
6 mg 6000 mcg 60 mg 60000 mcg
7 mg 7000 mcg 70 mg 70000 mcg
8 mg 8000 mcg 80 mg 80000 mcg
9 mg 9000 mcg 90 mg 90000 mcg
10 mg 10000 mcg 100 mg 100000 mcg

You can use the converter tool at the top of the page to work out an answer for your individual calculation.

If you wish to convert between milligrams and grams, you can do so with the mg to g converter. Alternatively, you can convert between micrograms and grams here.

What is the symbol for micrograms?

Microgram is a unit in the metric system and its symbol is μg. To type the symbol μ on a Mac, press the ⌥ Option + m keys together. On Windows, keep the Alt key depressed whilst you type the digits 2 3 0.

Within medical reports and communication micrograms are commonly referred to with the symbol mcg.

If you have any suggestions or queries with this conversion tool, please contact me.