Grams to Milligrams formula
milligrams = grams × 1,000
Multiply the number of grams by 1,000 to get milligrams. To go the other way, multiply by 0.001 instead, or use the mg to grams converter.
Grams to Milligrams conversion table
Common grams to mg values, rounded for reading. The converter above keeps full precision.
| Grams | Milligrams |
|---|---|
| 1 g | 1,000 mg |
| 2 g | 2,000 mg |
| 3 g | 3,000 mg |
| 4 g | 4,000 mg |
| 5 g | 5,000 mg |
| 10 g | 10,000 mg |
| 15 g | 15,000 mg |
| 20 g | 20,000 mg |
| 25 g | 25,000 mg |
| 50 g | 50,000 mg |
| 75 g | 75,000 mg |
| 100 g | 100,000 mg |
| 250 g | 250,000 mg |
| 500 g | 500,000 mg |
| 1,000 g | 1,000,000 mg |
Worked example
To convert 10 g to milligrams, multiply by 1,000: the result is 10,000 mg. Everyday usage calls this weight, although kilograms and pounds are units of mass. One international pound equals exactly 0.45359237 kilograms.
Frequently asked questions
How many milligrams are in a gram?
One gram equals 1,000 milligrams (1 g = 1,000 mg).
What is 10 grams in milligrams?
10 g converts to 10,000 mg. Enter any other value in the converter above to see it recalculated instantly.
How do I convert milligrams back to grams?
Reverse the calculation: one milligram equals 0.001 grams. You can also swap the units in the converter or open the mg to grams page.
Related weight conversions
Need a different pair? Open the full weight converter to choose any two units.