Milligrams to Micrograms Converter

Use our mg to mcg converter to convert a weight measured in milligrams to micrograms.

Result: Micrograms

1 mg = 1,000 mcg
Learn how we calculate this below

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How to Convert Milligrams to Micrograms

To convert a measurement in milligrams to a measurement in micrograms, multiply the weight by the following conversion ratio: 1,000 micrograms/milligram.

Since one milligram is equal to 1,000 micrograms, you can use this simple formula to convert:

micrograms = milligrams × 1,000

The weight in micrograms is equal to the weight in milligrams multiplied by 1,000.

For example, here's how to convert 5 milligrams to micrograms using the formula above.

micrograms = (5 mg × 1,000) = 5,000 mcg

How Many Micrograms Are in a Milligram?

There are 1,000 micrograms in a milligram, which is why we use this value in the formula above.

1 mg = 1,000 mcg

Milligrams and micrograms are both units used to measure weight. Keep reading to learn more about each unit of measure.

What Is a Milligram?

The milligram is a unit of mass equal to 1/1,000 of a gram, or 0.0154 grains.

The milligram, or milligramme, is an SI unit of weight in the metric system. In the metric system, "milli" is the prefix for thousandths, or 10-3. Milligrams can be abbreviated as mg; for example, 1 milligram can be written as 1 mg.

Learn more about milligrams.

What Is a Microgram?

The microgram is a unit of mass equal to 1/1,000,000 of a gram, and is commonly used to measure small quantities of medication dosages, vitamins, and supplements.

The microgram, or microgramme, is an SI unit of weight in the metric system. In the metric system, "micro" is the prefix for millionths, or 10-6. Micrograms can be abbreviated as mcg, and are also sometimes abbreviated as μg. For example, 1 microgram can be written as 1 mcg or 1 μg.

Learn more about micrograms.

Milligram to Microgram Conversion Table

Table showing various milligram measurements converted to micrograms.
Milligrams Micrograms
0.001 mg 1 mcg
0.002 mg 2 mcg
0.003 mg 3 mcg
0.004 mg 4 mcg
0.005 mg 5 mcg
0.006 mg 6 mcg
0.007 mg 7 mcg
0.008 mg 8 mcg
0.009 mg 9 mcg
0.01 mg 10 mcg
0.02 mg 20 mcg
0.03 mg 30 mcg
0.04 mg 40 mcg
0.05 mg 50 mcg
0.06 mg 60 mcg
0.07 mg 70 mcg
0.08 mg 80 mcg
0.09 mg 90 mcg
0.1 mg 100 mcg
0.2 mg 200 mcg
0.3 mg 300 mcg
0.4 mg 400 mcg
0.5 mg 500 mcg
0.6 mg 600 mcg
0.7 mg 700 mcg
0.8 mg 800 mcg
0.9 mg 900 mcg
1 mg 1,000 mcg

More Milligram & Microgram Conversions