How many micrograms are in a milligram?
There are 1,000 micrograms in 1 milligram.
Detailed answer
The microgram is one millionth of a gram; the milligram is one thousandth of a gram. So 1 mg = 1,000 µg. To convert milligrams to micrograms, multiply by 1,000. To convert micrograms to milligrams, divide by 1,000.
Relationship context
Both units are metric (SI). Micrograms appear in very low-dose drugs and trace analysis; milligrams are more common on nutrition and supplement labels.
Quick conversion table
| Milligram (mg) | Microgram (ug) |
|---|---|
| 0.1 | 100 |
| 1 | 1,000 |
| 2 | 2,000 |
| 3 | 3,000 |
| 4 | 4,000 |
| 5 | 5,000 |
| 6 | 6,000 |
| 7 | 7,000 |
| 8 | 8,000 |
| 9 | 9,000 |
| Milligram (mg) | Microgram (ug) |
|---|---|
| 10 | 10,000 |
| 20 | 20,000 |
| 30 | 30,000 |
| 40 | 40,000 |
| 50 | 50,000 |
| 60 | 60,000 |
| 70 | 70,000 |
| 80 | 80,000 |
| 90 | 90,000 |
| 100 | 100,000 |
More Milligrams converters
Dedicated pages from Milligram to every other common weight unit (kilogram, gram, milligram, pound, ounce, metric ton, stone, US short ton).
- mg to kg (Milligram to Kilogram)
- mg to g (Milligram to Gram)
- mg to ug (Milligram to Microgram)
- mg to lb (Milligram to Pound)
- mg to oz (Milligram to Ounce)
- mg to grain (Milligram to Grain)
- mg to carat (Milligram to Carat)
- mg to stone (Milligram to Stone)
- mg to uk-hundredweight (Milligram to Hundredweight (UK))
- mg to us-hundredweight (Milligram to Hundredweight (US))
- mg to metric-ton (Milligram to Metric Ton)
- mg to long-ton (Milligram to Long Ton (UK))
- mg to us-ton (Milligram to US Ton (Short))