0.4 g = 400 mg. To convert grams to milligrams, multiply by 1,000: 0.4 × 1,000 = 400.
How to convert grams to milligrams
mg = g × 1,000
- 1 g = 1,000 mg (and 1 mg = 0.001 g).
- Multiply the amount by the factor: 0.4 × 1,000 = 400.
- Answer: 0.4 g = 400 mg.
Grams to Milligrams table
| Grams (g) | Milligrams (mg) |
|---|---|
| 0.1 g | 100 mg |
| 0.2 g | 200 mg |
| 0.3 g | 300 mg |
| 0.4 g | 400 mg |
| 0.5 g | 500 mg |
| 0.6 g | 600 mg |
| 0.7 g | 700 mg |
| 0.8 g | 800 mg |
| 0.9 g | 900 mg |
| 1 g | 1,000 mg |
| g | mg |
|---|---|
| 1 g | 1,000 mg |
| 5 g | 5,000 mg |
| 10 g | 10,000 mg |
| 50 g | 50,000 mg |
| 100 g | 100,000 mg |
| 1,000 g | 1,000,000 mg |