Density and Mass
mgtog
Convert milligrams (mg) to grams (g).
Factor1 mg = 0.001 g
Converter
mg
Accepts numbers or expressions, e.g. 150 + 14.7
Result
g
Rendered to 6 significant figures.
Formula
Formula
g = mg × 0.001
Multiply any value in milligrams by 0.001 to obtain the value in grams.
Worked example
Convert 2500 mg to g.
- 01Start with 2500 mg.
- 02Multiply by the conversion factor: 2500 × 0.001 = 2.5 g.
Result2500 mg = 2.5 g
Conversion table
| mg | g |
|---|---|
| 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 mg to g?
1 mg equals 0.001 g. To convert, multiply the value in milligrams by 0.001.
How do I convert 1 mg to g?
1 mg = 0.001 g. For any value, multiply by 0.001.
How do I convert g back to mg?
Divide by the same factor — or equivalently, multiply by 1000. So 1 g = 1000 mg.
When would I need to convert milligram to gram?
Mass conversions appear in material balances, reagent dosing, and reconciling vendor specifications across imperial/metric systems.
Is the conversion exact?
Yes. Both mg and g are defined by exact SI relationships, so the displayed factor is exact (any rounding shown is only for display).