Convert Milligram to Microgram
Use this free converter to change milligrams (mg) into micrograms (µg). Milligram and microgram both measure weight & mass. As a quick reference, 1 mg equals 1000 µg, and 1 µg equals 0.001 mg.
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Microgram (µg)
1000
1 mg = 1000 µg
Weight & Mass conversion table
| Milligram | Microgram |
|---|---|
| 0.01 | 10 |
| 0.1 | 100 |
| 0.5 | 500 |
| 1 | 1000 |
| 2 | 2000 |
| 3 | 3000 |
| 5 | 5000 |
| 10 | 10000 |
| 20 | 20000 |
| 25 | 25000 |
| 50 | 50000 |
| 100 | 100000 |
| 1,000 | 1000000 |
How to convert Milligram to Microgram
Multiply the milligram value by 1000 to get micrograms.
- Enter the number of milligrams you want to convert.
- The converter instantly shows the equivalent value in micrograms.
- Worked example: 15 mg × 1000 = 15000 µg.
- Use the swap button to reverse the conversion (microgram to milligram).
About these units
Milligram (mg)
- Definition
- A milligram (mg) is one thousandth of a gram, used for very small masses such as medication doses.
- History
- It is a standard metric subdivision using the prefix "milli-" (one thousandth).
- Current use
- Milligrams express drug dosages, vitamin content, and quantities in chemistry and pharmacology.
Microgram (µg)
- Definition
- A microgram (µg) is one millionth of a gram, used for trace amounts of substances.
- History
- It uses the SI prefix "micro-" (one millionth) and is sometimes written "mcg" on labels to avoid confusion.
- Current use
- Micrograms measure potent drugs, hormones, and micronutrients like vitamin B12 and folate.
Frequently asked questions
How many micrograms are in a milligram?
There are 1000 µg in 1 mg. To convert, multiply the number of milligrams by 1000.
How do I convert milligrams to micrograms?
Multiply the milligram value by 1000 to get micrograms. For example, 10 mg = 10000 µg.
Is this milligram-to-microgram converter free?
Yes. This converter is completely free, runs entirely in your browser, and requires no sign-up. Your inputs never leave your device.
Convert Milligram to other weight & mass units
| Unit | 1 Milligram equals |
|---|---|
| Kilogram (kg) | 0.000001 kg |
| Gram (g) | 0.001 g |
| Microgram (µg) | 1000 µg |
| Metric Ton (t) | 1.0000e-9 t |
| Pound (lb) | 0.0000022046226 lb |
| Ounce (oz) | 0.000035273962 oz |
| Stone (st) | 1.5747e-7 st |
| US Ton (ton) | 1.1023e-9 ton |
| Imperial Ton (long ton) | 9.8421e-10 long ton |
| Carat (ct) | 0.005 ct |