Convert milligrams to grams
Milligram (mg) to gram (g). One milligram equals 0.001 grams.
Formula
Milligram to gram conversion table
| Milligrams | Grams | Grams | Milligrams |
|---|---|---|---|
| 1 mg | 0.001 g | 1 g | 1000 mg |
| 2 mg | 0.002 g | 2 g | 2000 mg |
| 3 mg | 0.003 g | 3 g | 3000 mg |
| 5 mg | 0.005 g | 5 g | 5000 mg |
| 10 mg | 0.01 g | 10 g | 10000 mg |
| 20 mg | 0.02 g | 20 g | 20000 mg |
| 50 mg | 0.05 g | 50 g | 50000 mg |
| 100 mg | 0.1 g | 100 g | 100000 mg |
| 500 mg | 0.5 g | 500 g | 500000 mg |
| 1000 mg | 1 g | 1000 g | 1000000 mg |
To convert milligrams to grams, divide the number of milligrams by 1000. One milligram equals 0.001 grams, and one gram equals 1000 milligrams, so the relationship is fixed and exact. As a worked example, 10 mg comes to 0.01 g. Enter your own figure in the converter above to get an instant answer, or use the swap button to flip the direction. This is a mass conversion, and like every tool on UnitGlide it runs locally in your browser with no account or upload required. The table further down shows a range of common milligram values already worked out in grams, plus the reverse gram to milligram direction, which is handy for quick reference or double-checking a result by hand.
Frequently asked questions
How many grams are in a milligram?
One milligram equals 0.001 grams. The ratio is constant, so you can multiply any number of milligrams by 0.001 to get grams.
What is the formula to convert milligrams to grams?
Use grams = milligrams ÷ 1000. UnitGlide applies this exact formula for every value, so results stay accurate across the whole range.
How do I convert grams back to milligrams?
Go the other way by using one gram equals 1000 milligrams. You can also press the swap button in the converter above to flip the direction in one click.
Is this milligram to gram converter accurate?
Yes. It uses internationally defined SI conversion factors, as maintained by the BIPM, and all math runs in your browser so nothing is rounded away on a server. For everyday use the displayed precision is more than enough.