Formula
mg to g conversion formula
Use this relationship for a direct conversion:
g = mg x 0.001
Worked example
2 mg = 0.002 g.
International avoirdupois and metric mass definitions are exact; displayed results are rounded only for readability.
Weight and Mass conversion
Convert Milligram to Gram
1 milligram (mg) equals 0.001 gram (g). Enter any value below to convert from mg to g.
Enter a value and choose units. Results update instantly.
1 mg = 0.001 g
All Mass units
From 1 mg| Unit | Value |
|---|---|
| Kilogram kg | 0.000001 |
| Gram g | 0.001 |
| Milligram mg | 1 |
| Metric ton t | 0.000000001 |
| Pound lb | 0.0000022046 |
| Ounce oz | 0.000035274 |
| Stone st | 0.0000001575 |
| US short ton short ton | 0.0000000011 |
| Imperial long ton long ton | 0.000000001 |
| Carat ct | 0.005 |
Recent conversions
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Quick reference
Milligram to Gram table
| Milligram (mg) | Gram (g) |
|---|---|
| 0.01 | 0.00001 |
| 0.1 | 0.0001 |
| 1 | 0.001 |
| 2 | 0.002 |
| 5 | 0.005 |
| 10 | 0.01 |
| 25 | 0.025 |
| 50 | 0.05 |
| 100 | 0.1 |
| 1,000 | 1 |
From unit
About the milligram
One millionth of a kilogram.
Symbol: mg
To unit
About the gram
One thousandth of a kilogram.
Symbol: g
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Conversion standard
Definitions are checked against NIST SP 811: Units outside the SI. Calculations use full internal precision before display rounding.
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mg to g FAQ
How do you convert milligram to gram?
Use the formula g = mg x 0.001. 1 milligram (mg) equals 0.001 gram (g).
Is the mg to g conversion exact?
Both unit definitions use exact factors. Only the displayed decimal may be rounded.