Density and Mass
µgtomg
Convert micrograms (µg) to milligrams (mg).
Factor1 µg = 0.001 mg
Converter
µg
Accepts numbers or expressions, e.g. 150 + 14.7
Result
mg
Rendered to 6 significant figures.
Formula
Formula
mg = µg × 0.001
Multiply any value in micrograms by 0.001 to obtain the value in milligrams.
Worked example
Convert 1000 µg to mg.
- 01Start with 1000 µg.
- 02Multiply by the conversion factor: 1000 × 0.001 = 1 mg.
Result1000 µg = 1 mg
Conversion table
| µg | mg |
|---|---|
| 1 | 0.001 |
| 2 | 0.002 |
| 5 | 0.005 |
| 10 | 0.01 |
| 20 | 0.02 |
| 50 | 0.05 |
| 100 | 0.1 |
| 200 | 0.2 |
| 500 | 0.5 |
| 1000 | 1 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from µg to mg?
1 µg equals 0.001 mg. To convert, multiply the value in micrograms by 0.001.
How do I convert 1 µg to mg?
1 µg = 0.001 mg. For any value, multiply by 0.001.
How do I convert mg back to µg?
Divide by the same factor — or equivalently, multiply by 1000. So 1 mg = 1000 µg.
When would I need to convert microgram to milligram?
Mass conversions appear in material balances, reagent dosing, and reconciling vendor specifications across imperial/metric systems.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).