Convert Grams to Milligrams
Enter the value in grams to get its exact equivalent in milligrams instantly.
How to convert grams to milligrams?
To convert a measurement in grams (g) to milligrams (mg), we multiply the value by the conversion factor 1000.
mg = g × 1,000.00
The milligram (one thousandth of a gram) is the standard unit for expressing medication doses, since it allows very small amounts of active ingredient to be indicated with precision.
| Grams (g) | Milligrams (mg) |
|---|---|
| 1.00 | 1,000.00 |
| 5.00 | 5,000.00 |
| 10.00 | 10,000.00 |
| 50.00 | 50,000.00 |
| 100.00 | 100,000.00 |
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Frequently Asked Questions
How many milligrams are in 1 gram?
1 g equals exactly 1000 milligrams.
Why are medicines dosed in milligrams instead of grams?
Because the active doses of most drugs are very small (often between 1 and 500 mg), and expressing them in grams would produce impractical decimal figures for safe prescribing and dosing.