1 mg = 1000 µg (milligram → microgram)
1 mg = 1000 µg
1 milligram equals 1000 micrograms. To convert milligrams to micrograms, multiply the milligram value by 1000. For quick reference: 1 mg = 1000 µg, 5 mg = 5000 µg, 10 mg = 10000 µg, 100 mg = 100000 µg.
Micrograms = Milligrams × 1000Start with your value in milligrams.
Multiply the milligram value by 1000. This is the exact conversion factor from milligrams to micrograms.
The product is your value in micrograms. For example, 5 mg × 1000 = 5000 µg.
The exact factor from milligrams to micrograms is 1000.
Micrograms = Milligrams × 1000
Fifty common reference values, hand-picked for skim utility. Use the calculator above for any value not listed.
| Milligrams (mg) | Micrograms (µg) |
|---|---|
| 0.1 mg | 100 µg |
| 0.25 mg | 250 µg |
| 0.5 mg | 500 µg |
| 1 mg | 1000 µg |
| 1.5 mg | 1500 µg |
| 2 mg | 2000 µg |
| 2.5 mg | 2500 µg |
| 3 mg | 3000 µg |
| 4 mg | 4000 µg |
| 5 mg | 5000 µg |
| 6 mg | 6000 µg |
| 7 mg | 7000 µg |
| 8 mg | 8000 µg |
| 9 mg | 9000 µg |
| 10 mg | 10000 µg |
| 12 mg | 12000 µg |
| 15 mg | 15000 µg |
| 18 mg | 18000 µg |
| 20 mg | 20000 µg |
| 25 mg | 25000 µg |
| 30 mg | 30000 µg |
| 35 mg | 35000 µg |
| 40 mg | 40000 µg |
| 45 mg | 45000 µg |
| 50 mg | 50000 µg |
| 60 mg | 60000 µg |
| 70 mg | 70000 µg |
| 75 mg | 75000 µg |
| 80 mg | 80000 µg |
| 90 mg | 90000 µg |
| 100 mg | 100000 µg |
| 120 mg | 120000 µg |
| 125 mg | 125000 µg |
| 150 mg | 150000 µg |
| 175 mg | 175000 µg |
| 180 mg | 180000 µg |
| 200 mg | 200000 µg |
| 225 mg | 225000 µg |
| 250 mg | 250000 µg |
| 275 mg | 275000 µg |
| 300 mg | 300000 µg |
| 350 mg | 350000 µg |
| 400 mg | 400000 µg |
| 450 mg | 450000 µg |
| 500 mg | 500000 µg |
| 600 mg | 600000 µg |
| 750 mg | 750000 µg |
| 1000 mg | 1000000 µg |
| 2000 mg | 2000000 µg |
| 5000 mg | 5000000 µg |
A grain of table salt weighs about 0.3 mg. A standard aspirin tablet contains 325 mg of active ingredient. In micrograms, that gives you: 1 mg = 1000 µg, 10 mg = 10000 µg, 100 mg = 100000 µg.
The milligram (mg) equals one-thousandth of a gram, or one-millionth of a kilogram. It is the standard unit for drug dosages on pharmaceutical labels, vitamin and supplement content, and fine laboratory measurements where a gram would be too coarse.
The microgram (mcg, µg) equals one-millionth of a gram, or one-billionth of a kilogram. It is the standard unit for vitamin doses (like B12 and folate), trace-element content, and hormone dosages where milligram quantities would round to zero.
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