Converting between grams (g) and milligrams (mg) is one of the most common weight conversions used in medicine, cooking, chemistry, nutrition, and laboratory work. Since 1 gram equals 1000 milligrams, the conversion is simple but needs to be precise.
Grams ↔ Milligrams Converter
Instant & Accurate Conversion
1 Gram = 1000 Milligrams
How to Convert Grams to Milligrams
- Formula: Milligrams = Grams × 1000
- Example: 2.5 grams = 2.5 × 1000 = 2500 mg
How to Convert Milligrams to Grams
- Formula: Grams = Milligrams ÷ 1000
- Example: 1500 milligrams = 1500 ÷ 1000 = 1.5 g
Our easy-to-use converter above allows you to convert in both directions instantly. Just enter the value in either field and click “Convert Now”.
Grams to Milligrams Conversion Table
| Grams (g) | Milligrams (mg) |
|---|---|
| 0.1 g | 100 mg |
| 0.5 g | 500 mg |
| 1 g | 1,000 mg |
| 2 g | 2,000 mg |
| 2.5 g | 2,500 mg |
| 5 g | 5,000 mg |
| 10 g | 10,000 mg |
| 25 g | 25,000 mg |
| 50 g | 50,000 mg |
| 100 g | 100,000 mg |
Tip: For quick mental math, simply move the decimal point 3 places to the right to convert grams to milligrams (e.g., 7.65 g = 7650 mg).
This tool is especially useful for pharmacists, students, chefs, and fitness enthusiasts who need fast and error-free conversions