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Milligrams to Microgram Conversion Calculator

Convert Microgram to Milligram (mcg to mg) or Milligram to Microgram (mg to mcg)

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Microgram to Milligram Converter


You can input in any of the fields and get equivalent values.
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Formula for Micrograms to Milligrams conversion?

How many Microgram to Milligram (mcg to mg)

Formula to convert mcg to mg:

mg = mcg / 1000

To convert 500 mcg to mg, divide by 1000:

500 mcg / 1000 = 0.5 mg


How many Milligram to Microgram (mg to mcg)

Formula to convert mg to mcg:

mcg = mg * 1000

To convert 2.5 mg to mcg, multiply by 1000:

2.5 mg * 1000 = 2500 mcg

To convert milligrams to micrograms, multiply by 1000. To convert micrograms to milligrams, divide by 1000.

What is a Milligram?

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  • Milligram is a small unit of measurement of mass
  • One milligram is equal to one thousandth of a gram. The term 'milli' means thousand
  • The milligram is part of the metric system of measurement and used in most countries.
  • Milligrams are typically used to measure smaller quantities of matter, such as the dose of a medication or the amount of a nutrient in a food.
  • The abbreviation for milligram is 'mg'

Where is Milligram Used?

  • In Medicines where there are multiple chemical ingredients mixed in different proportions which are in mg. Example Paracetamol 250 mg or 650 mg, Ibuprofen 200 mg
  • Minerals/ Vitamins listed in packaged food are specified in milligrams.
  • Daily intake of Vitamins and some Trace elements specified by authorized agencies are in mg. Example: Vitamin C 75 mg per day, Iron 20 mg and so on...
  • Garden nutrients have different composition of items in milligrams.
  • Chemical solutions used in labs for research and scientific experiments are specified in milligrams.
  • Milligrams is also used in pricing of precious metals along with carat.

What is a Microgram?

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  • Micrograms is one of the smallest units of measurement of Mass, commonly used in medicine, science, and other fields.
  • One microgram is equal to one thousandth of a milligram which means an microgram is 1000 times smaller than a milligram
  • This means that there are one million micrograms in one gram.
  • A 'micro' means very small and used in context such as microscopic, micro organism
  • Abbreviation used for microgram is 'μg' or 'mcg'. “µ” is pronounced as 'mu'

Where is Microgram used?

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Micrograms are used in number of areas
  • Ingredients mix that go into making a Medicine are in mcg
  • Micrograms are also used to measure the levels of trace elements, minerals in daily food intake. For example, the recommended daily intake of selenium, vitamin K are specified in mcg.
  • Another example related to food source and mcg - Vitamin A in Mango is around 110 mcg while that of a pistachio nut is 4 mcg
  • They are are used in scientific measurements, such as the mass of cells and the concentration of chemicals in solution.
  • Blood lead levels are expressed in mcg. Other cellular level constituents are also in specified in μg/deciliter

Microgram to Milligram Conversion (mcg to mg) Table

Conversion Table Icon
Microgram (mcg)Milligram(mg)
1 mcg 0.001 mg
2 mcg 0.002 mg
2.4 mcg 0.0024 mg
3 mcg 0.003 mg
4 mcg 0.004 mg
5 mcg 0.005 mg
10 mcg 0.01 mg
15 mcg 0.015 mg
20 mcg 0.02 mg
25 mcg 0.025 mg
40 mcg 0.04 mg
50 mcg 0.05 mg
60 mcg 0.06 mg
75 mcg 0.075 mg
90 mcg 0.09 mg
100 mcg 0.1 mg
120 mcg 0.12 mg
125 mcg 0.125 mg
150 mcg 0.15 mg
175 mcg 0.175 mg
180 mcg 0.18 mg
200 mcg 0.2 mg
225 mcg 0.225 mg
250 mcg 0.25 mg
300 mcg 0.3 mg
350 mcg 0.35 mg
400 mcg 0.4 mg
450 mcg 0.45 mg
500 mcg 0.5 mg
600 mcg 0.6 mg
650 mcg 0.65 mg
700 mcg 0.7 mg
750 mcg 0.75 mg
800 mcg 0.8 mg
900 mcg 0.9 mg
1000 mcg 1 mg
1500 mcg 1.5 mg
2000 mcg 2 mg
2500 mcg 2.5 mg
3000 mcg 3 mg
3500 mcg 3.5 mg
4000 mcg 4 mg
5000 mcg 5 mg
10000 mcg 10 mg
20000 mcg 20 mg
50000 mcg 50 mg

Milligram to Microgram Conversion (mg to mcg) Table

Conversion Table Icon
Milligram (mg) Microgram (mcg)
0.01 mg 10 mcg
0.05 mg 50 mcg
0.1 mg 100 mcg
0.2 mg 200 mcg
0.25 mg 250 mcg
0.3 mg 300 mcg
0.4 mg 400 mcg
0.5 mg 500 mcg
0.75 mg 750 mcg
1.0 mg 1,000 mcg
2.0 mg 2000 mcg
2.5 mg 2500 mcg
3.0 mg 3000 mcg
3.5 mg 3500 mcg
4.0 mg 4000 mcg
4.5 mg 4500 mcg
5 mg 5000 mcg
6 mg 6000 mcg
7 mg 7000 mcg
8 mg 8000 mcg
9 mg 9000 mcg
10 mg 10,000 mcg
11 mg 11,000 mcg
12 mg 12,000 mcg
13 mg 13,000 mcg
14 mg 14,000 mcg
15 mg 15,000 mcg
25 mg 25,000 mcg
50 mg 50,000 mcg
100 mg 100,000 mcg

Frequently Asked Questions on Microgram and Milligram Conversion

FAQ icon

  • A kilogram is 1000,000,000 (1 ^ 9) micrograms.
    A 1000 grams is a kilogram, a 1000 milligram is a gram and 1000 microgram is a milligram.
    So it takes 1000 x 1000 x 1000 microgram to make a kilogram

  • mg is 1000 times bigger than mcg

  • A grain of sand is supposed to weigh 1 mcg
    A Red blood cell is in the range of few micrograms
    A small dot of a graphite/carbon is 1 mcg