Milligrams to Grams Converter
Convert milligrams (mg) to grams (g), with the formula, a conversion table and exact factors.
Change the values and press Calculate to work out your own figures.
Enter a weight, choose its unit and the unit you want. The answer is exact until it is shown, and the same value appears in every other unit.
Show the working
- 1 mg = 0.001 g
- 1 × 0.001 = 0.001 g
How to convert milligrams to grams
1 mg = 0.001 g, so multiply by 0.001 to go from milligrams to grams. Going the other way, 1 g = 1,000 mg.
g = mg × 0.001 mg = g × 1,000
Worked example:
1 mg = 0.001 g 5 × 0.001 = 0.005 g
Milligrams to grams table
| Milligrams | Grams |
|---|---|
| 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 |
| 1000 mg | 1 g |
About the units
- Milligrams (mg)
- Milligrams, a metric unit. Definition: BIPM SI Brochure.
- Grams (g)
- Grams, a metric unit. Definition: BIPM SI Brochure.
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