Grams to Milligrams
1 Gram = 1,000 Milligrams
Common amounts:
About the gram to milligram conversion
The gram (g) and the milligram (mg) are both units of weight. Convert between mass units — milligrams, grams, kilograms, metric tonnes, pounds, ounces and stones.
To convert grams to milligrams, multiply by 1,000. To go back, multiply milligrams by 0.001.
Reference table
| Grams | Milligrams |
|---|---|
| 1 g | 1,000 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 |
Need the reverse conversion? Convert Milligrams to Grams.
Convert Gram to other weight units
Frequently asked questions
- How many milligrams is 1 gram?
- 1 Gram equals 1,000 Milligrams. To go the other way, 1 Milligram equals 0.001 Grams.
- What's the formula to convert grams to milligrams?
- Multiply the number of grams by 1,000 to get milligrams. For example, 10 grams × 1,000 = 10,000 milligrams.
- Does this converter handle decimals and very large numbers?
- Yes. Type any real number, including decimals or values in the trillions. Math runs entirely in your browser — no server round-trip, no sign-up, and nothing to install.