100 mcg to mg
Convert 100 micrograms (µg) to milligrams — the answer, the arithmetic and the closest common values, all on one page.
Show your work
100 mcg × 0.001 = 0.1 mg.
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Questions
What is 100 micrograms (µg) in milligrams?
100 mcg = 0.1 mg. The arithmetic: 100 mcg × 0.001 = 0.1 mg.
How precise is this result?
The factor is exact by definition, so the only rounding is the display. Higher precision is available on the mcg to mg converter page.
What is 100 mg in mcg?
100 mg = 100,000 mcg — the inverse direction.