How to convert milligrams to grams
To convert milligrams to grams, use the formula g = mg × 0.001. In other words, multiply the number of milligrams by 0.001 to get the equivalent in grams. For example, 5 mg equals 0.005 g.
MG to Grams Converter
Convert milligrams to grams instantly. 5 mg = 0.005 g.
1 mg = 0.001 g
| MG (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 |
| 6 mg | 0.006 g |
| 7 mg | 0.007 g |
| 8 mg | 0.008 g |
| 9 mg | 0.009 g |
| 10 mg | 0.01 g |
| 15 mg | 0.015 g |
| 20 mg | 0.02 g |
| 25 mg | 0.025 g |
| 30 mg | 0.03 g |
| 40 mg | 0.04 g |
| 50 mg | 0.05 g |
| 75 mg | 0.075 g |
| 100 mg | 0.1 g |
| 250 mg | 0.25 g |
| 500 mg | 0.5 g |
| 1,000 mg | 1 g |
Milligram and Gram
The milligram (mg) and the gram (g) are both units of weight. This page gives you an instant, exact conversion between them, a reference table for the most common values, and the underlying formula so you can check the maths yourself. All calculations run in your browser — nothing you type is sent anywhere.
Need to go the other way? Use the Grams to MG converter. For all units at once, try the full Weight Converter.
Frequently Asked Questions
How do I convert milligrams to grams?
Use the formula g = mg × 0.001. For example, 5 mg equals 0.005 g. Just enter your value in the converter above to get an instant result.
What is 1 milligram in grams?
1 mg = 0.001 g. You can multiply any number of milligrams by this figure to convert it, or use the calculator above for exact results.
How do I convert grams back to milligrams?
Use the reverse conversion: 1 g = 1,000 mg. Our Grams to MG converter does this for you.