Convert milligrams to grams instantly. Enter a value below, or use the formula and reference table further down the page.
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How to convert milligrams to grams
Multiply the value by 0.001.
g = mg × 0.001Example: 10 mg = 0.01 g.
Milligrams to Grams conversion table
| Milligrams (mg) | Grams (g) |
|---|---|
| 1 mg | 0.001 g |
| 2 mg | 0.002 g |
| 3 mg | 0.003 g |
| 4 mg | 0.004 g |
| 5 mg | 0.005 g |
| 10 mg | 0.01 g |
| 15 mg | 0.015 g |
| 20 mg | 0.02 g |
| 25 mg | 0.025 g |
| 50 mg | 0.05 g |
| 100 mg | 0.1 g |
Frequently asked questions
How many grams is 1 milligram?
1 milligram equals 0.001 grams.
What is the formula to convert mg to g?
To convert mg to g, multiply the value by 0.001. The full formula is: g = mg × 0.001.
How do I convert grams back to milligrams?
Use the same calculator above and type your value into the grams field instead — it converts in both directions. Or use the reverse formula: mg = g ÷ 0.001.
Is the mg to g conversion exact?
The conversion factor used here (0.001) is the standard internationally defined value. Results on this page are rounded to four decimal places for readability.