45 mg = 0.045 g. To convert milligrams to grams, divide by 1,000: 45 ÷ 1,000 = 0.045.
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: 45 × 0.001 = 0.045.
- Answer: 45 mg = 0.045 g.
Shortcut: dividing by 1,000 gives the same result as multiplying by 0.001.
Milligrams to Grams table
| Milligrams (mg) | Grams (g) |
|---|---|
| 40 mg | 0.04 g |
| 41 mg | 0.041 g |
| 42 mg | 0.042 g |
| 43 mg | 0.043 g |
| 44 mg | 0.044 g |
| 45 mg | 0.045 g |
| 46 mg | 0.046 g |
| 47 mg | 0.047 g |
| 48 mg | 0.048 g |
| 49 mg | 0.049 g |
| 50 mg | 0.05 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 |