How it's calculated
mg = mcg ÷ 1000 (reverse: mcg = mg × 1000)
mcg (µg) = micrograms, mg = milligrams; 1 mg = 1000 mcg.
Common values
| Micrograms (mcg) | Milligrams (mg) |
|---|---|
| 100 | 0.1 |
| 500 | 0.5 |
| 1000 | 1 |
| 5000 | 5 |
Common questions
How many mcg are in 1 mg?
There are 1,000 micrograms in one milligram.
Is mcg the same as ug?
Yes. Mcg and ug (microgram) mean the same thing. Mcg is preferred on US drug labels to avoid misreading.