Milligrams to Grams Converter
Convert milligrams (mg) to grams (g) instantly. Type a value above and the result updates while you type. 1 milligram equals 0.001 grams.
Result updates as you type. Values are calculated locally in your browser — nothing is sent to a server.
The formula
1 milligram = 0.001 grams
Multiply the milligrams value by 0.001 to get grams. Or divide by 1000 to go the other way.
Milligrams to grams conversion table
| mg | g |
|---|---|
| 1 | 0.001 |
| 2 | 0.002 |
| 3 | 0.003 |
| 4 | 0.004 |
| 5 | 0.005 |
| 6 | 0.006 |
| 7 | 0.007 |
| 8 | 0.008 |
| 9 | 0.009 |
| 10 | 0.01 |
| 15 | 0.015 |
| 20 | 0.02 |
| 25 | 0.025 |
| 50 | 0.05 |
| 75 | 0.075 |
| 100 | 0.1 |
Worked examples
- 5 mg × 0.001 = 0.005 g
- 30 mg × 0.001 = 0.03 g
- 165 mg × 0.001 = 0.165 g
Conversion factors follow the exact international definitions (SI/BIPM; imperial units per the 1959 International Yard and Pound Agreement, maintained by NIST). NIST unit conversion reference
Factors last verified August 2026 · Built by Jeffrey Tepper.
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Frequently asked questions
How many grams are in 1 milligram?
1 milligram equals 0.001 grams (mg → g).
How do you convert milligrams to grams?
Multiply the number of milligrams by 0.001. For example: 10 mg × 0.001 = 0.01 g.
What is 50 mg in g?
50 mg equals 0.05 g.
Which is bigger: 1 milligram or 1 gram?
1 gram is bigger: 1 milligram is only 0.001 grams.