4.2 mg = 0.0042 g. To convert milligrams to grams, divide by 1,000: 4.2 ÷ 1,000 = 0.0042.
How to convert milligrams to grams
g = mg × 0.001
- 1 mg = 0.001 g (and 1 g = 1,000 mg).
- Multiply the amount by the factor: 4.2 × 0.001 = 0.0042.
- Answer: 4.2 mg = 0.0042 g.
Shortcut: dividing by 1,000 gives the same result as multiplying by 0.001.
Milligrams to Grams table
| Milligrams (mg) | Grams (g) |
|---|---|
| 3.7 mg | 0.0037 g |
| 3.8 mg | 0.0038 g |
| 3.9 mg | 0.0039 g |
| 4 mg | 0.004 g |
| 4.1 mg | 0.0041 g |
| 4.2 mg | 0.0042 g |
| 4.3 mg | 0.0043 g |
| 4.4 mg | 0.0044 g |
| 4.5 mg | 0.0045 g |
| 4.6 mg | 0.0046 g |
| 4.7 mg | 0.0047 g |
| mg | g |
|---|---|
| 1 mg | 0.001 g |
| 5 mg | 0.005 g |
| 10 mg | 0.01 g |
| 50 mg | 0.05 g |
| 100 mg | 0.1 g |
| 1,000 mg | 1 g |