Convert Grams to Milligrams
Convert Grams (g) to Milligrams (mg) instantly. Enter a value below and the result updates live — accurate to 8 significant figures. 1 Grams = 1000 Milligrams.
Numbers round to 8 significant figures — the underlying math is full-precision.
Grams to Milligrams formula
Multiply the Grams value by 1000.
mg = g × 1000
Grams to Milligrams conversion table
| Grams (g) | Milligrams (mg) |
|---|---|
| 1 | 1000 |
| 5 | 5000 |
| 10 | 10000 |
| 20 | 20000 |
| 50 | 50000 |
| 100 | 100000 |
| 500 | 500000 |
| 1000 | 1000000 |
Grams to Milligrams — FAQ
What is 1 g in mg?
1 Grams (g) equals 1000 Milligrams (mg). For example, 10 g = 10000 mg.
How do I convert Grams to Milligrams?
Multiply the Grams value by 1000. Or simply type any value into the converter above and the Milligrams result updates instantly.
Is the Grams to Milligrams conversion accurate?
Yes. The conversion uses the exact internationally-defined factor: 1 g = 1000 mg. Results are shown to 8 significant figures.