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Milligrams to Micrograms Converter

mg → µg: type a value and the result appears instantly.

1 mg = 1,000 µg
1 µg = 0.001 mg
—

How to convert milligrams to micrograms

Use this formula:

µg = mg × 1,000

Examples

mg to µg conversion chart

milligrams (mg)micrograms (µg)
0.1 mg100 µg
0.25 mg250 µg
0.5 mg500 µg
1 mg1,000 µg
2 mg2,000 µg
3 mg3,000 µg
4 mg4,000 µg
5 mg5,000 µg
6 mg6,000 µg
7 mg7,000 µg
8 mg8,000 µg
9 mg9,000 µg
10 mg10,000 µg
12 mg12,000 µg
15 mg15,000 µg
20 mg20,000 µg
25 mg25,000 µg
30 mg30,000 µg
40 mg40,000 µg
50 mg50,000 µg
60 mg60,000 µg
70 mg70,000 µg
75 mg75,000 µg
80 mg80,000 µg
90 mg90,000 µg
100 mg100,000 µg
150 mg150,000 µg
200 mg200,000 µg
250 mg250,000 µg
500 mg500,000 µg
1,000 mg1,000,000 µg

About the units

Milligram (mg) is a metric (SI) unit. 1 mg = 0.001 g.

Microgram (µg) is a metric (SI) unit. 1 µg = 0.001 mg.

Frequently asked questions

How do I convert milligrams to micrograms?
Multiply the value in mg by 1,000.
How many micrograms are in 1 milligram?
1 mg = 1,000 µg.
What is 12 mg in µg?
12 mg = 12,000 µg.
How do I convert micrograms to milligrams?
Use the reverse converter: µg → mg.

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Sources: NIST SP 811 · BIPM SI Brochure · NIST Handbook 44. Last reviewed: 2026-10 · FreeUnitConverters