1 g = 1000 mg
1 Gram (g) = 1000 Milligram (mg).
If you want to reverse convert, use Milligram → Gram. 1 mg = 0.001 g. You can also explore the full Mass converter page for more cross conversions.
Conversion formula
Gram to Milligram formula: value in mg = value in g × 1000.
Milligram to Gram formula: value in g = value in mg × 0.001.
How to convert Gram to Milligram
To convert Gram to Milligram, multiply the value in g by 1000. This gives the result in mg.
For example, 1 g = 1000 mg and 10 g = 10000 mg.
What is Gram?
Gram (g): Useful for kitchen scales and small product quantities; one thousandth of a kilogram. 1 g = 1000 mg.
What is Milligram?
Milligram (mg): Describes small masses such as laboratory samples; a thousand times smaller than a gram. 1 mg = 0.001 g.
FAQ
How many milligram are in 1 gram?
There are 1000 mg in 1 g.
Why can conversion results differ slightly?
Check the unit definition and rounding. US and imperial measures can differ; rounding intermediate values can also change the final digits.
How do I convert gram to milligram?
Multiply the value in g by 1000 to get the value in mg.
Gram → other Mass units
- 1 gram → kilogram = 0.001 kilogram
- 1 gram = 1.0E-6 metric ton
- 1 gram → milligram = 1000 milligram
- 1 gram = 1000000 microgram
- 1 gram → quintal = 1.0E-5 quintal
- 1 gram → pound = 0.0022046226218488 pound
- 1 gram → ounce = 0.035273961980687 ounce
- 1 gram → grain = 15.432358352941 grain
- 1 gram → stone = 0.00015747304441777 stone
- 1 gram = 9.8420652644867E-7 long ton
- 1 gram → carat = 5 carat
- 1 gram = 1.1023113109244E-6 short ton
Gram → Milligram Table
The table below shows common values from Gram to Milligram and the reverse direction for quick reference.
| g | mg | Rounded |
|---|---|---|
| 1 g | 1000 mg | 1000.0000 |
| 2 g | 2000 mg | 2000.0000 |
| 3 g | 3000 mg | 3000.0000 |
| 4 g | 4000 mg | 4000.0000 |
| 5 g | 5000 mg | 5000.0000 |
| 10 g | 10000 mg | 10000.0000 |
| 12 g | 12000 mg | 12000.0000 |
| 15 g | 15000 mg | 15000.0000 |
| 20 g | 20000 mg | 20000.0000 |
| 25 g | 25000 mg | 25000.0000 |
| 30 g | 30000 mg | 30000.0000 |
| 40 g | 40000 mg | 40000.0000 |
| 50 g | 50000 mg | 50000.0000 |
| 75 g | 75000 mg | 75000.0000 |
| 100 g | 100000 mg | 100000.0000 |
| 200 g | 200000 mg | 200000.0000 |
| 250 g | 250000 mg | 250000.0000 |
| 500 g | 500000 mg | 500000.0000 |
| 750 g | 750000 mg | 750000.0000 |
| 1000 g | 1000000 mg | 1000000.0000 |
| 2500 g | 2500000 mg | 2500000.0000 |
| 5000 g | 5000000 mg | 5000000.0000 |
| 10000 g | 10000000 mg | 10000000.0000 |
Milligram → Gram Table
| mg | g | Rounded |
|---|---|---|
| 1 mg | 0.001 g | 0.0010 |
| 2 mg | 0.002 g | 0.0020 |
| 3 mg | 0.003 g | 0.0030 |
| 4 mg | 0.004 g | 0.0040 |
| 5 mg | 0.005 g | 0.0050 |
| 10 mg | 0.01 g | 0.0100 |
| 12 mg | 0.012 g | 0.0120 |
| 15 mg | 0.015 g | 0.0150 |
| 20 mg | 0.02 g | 0.0200 |
| 25 mg | 0.025 g | 0.0250 |
| 30 mg | 0.03 g | 0.0300 |
| 40 mg | 0.04 g | 0.0400 |
| 50 mg | 0.05 g | 0.0500 |
| 75 mg | 0.075 g | 0.0750 |
| 100 mg | 0.1 g | 0.1000 |
| 200 mg | 0.2 g | 0.2000 |
| 250 mg | 0.25 g | 0.2500 |
| 500 mg | 0.5 g | 0.5000 |
| 750 mg | 0.75 g | 0.7500 |
| 1000 mg | 1 g | 1.0000 |
| 2500 mg | 2.5 g | 2.5000 |
| 5000 mg | 5 g | 5.0000 |
| 10000 mg | 10 g | 10.0000 |
Milligram → Gram
The reverse value is 1 mg = 0.001 g.