Milligrams to micrograms formula
Exact conversion factor
Micrograms = Milligrams × 1,000 Example: 1 mg × 1,000 = 1,000 mcg Both units are derived from the SI base metric system. One milligram contains exactly 1,000 micrograms. To convert, multiply the value in milligrams by 1,000.
Common reference points
| Milligrams | Micrograms (mcg) |
|---|---|
| 0.5 mg | 500 mcg |
| 1 mg | 1,000 mcg |
| 2 mg | 2,000 mcg |
| 5 mg | 5,000 mcg |
Frequently asked questions
How many mcg is 1 mg?
1 milligram is exactly 1,000 micrograms.
How do I convert mg to mcg?
Multiply the milligram value by 1,000.
Is mcg the same as µg?
Yes — "mcg" is the plain-text form of the symbol µg (micrograms), used because µ doesn’t always display or type reliably, especially on medication and supplement labels.