Convert mg to g instantly — formula, worked examples and a conversion table of common values.
Convert milligrams (mg) to grams (g). Enter a value on either side and the other updates instantly — nothing is sent to a server.
One milligram equals 0.001 g. The table below lists the values people look up most often, and each one links to a page with the worked calculation.
g = mg ÷ 1,000| Milligram (mg) | Gram (g) |
|---|---|
| 0.1 | 0.0001 |
| 0.5 | 0.0005 |
| 1 | 0.001 |
| 2 | 0.002 |
| 3 | 0.003 |
| 5 | 0.005 |
| 10 | 0.01 |
| 15 | 0.015 |
| 20 | 0.02 |
| 25 | 0.025 |
| 50 | 0.05 |
| 75 | 0.075 |
| 100 | 0.1 |
| 250 | 0.25 |
| 500 | 0.5 |
| 1,000 | 1 |
1 milligram = 0.001 g.
10 mg = 0.01 g.
100 mg = 0.1 g.
Use the formula g = mg ÷ 1,000. Or type any value into the converter above — it works in both directions.