Gram to Milligram Converter
Convert gram to milligram instantly.
Standard weight units
kilogram 0.1
milligram 100000
pound 0.2205
ounce 3.527
stone 0.0157
Fun comparisons
African elephant 🐘~ Less than 0.01
Pickup truck 🚚~ Less than 0.01
Average person 🧍~ Less than 0.01
Medium dog 🐕~ Less than 0.01
Refrigerator 🗄️~ Less than 0.01
How to convert gram to milligram
Enter your value in gram and get the equivalent in milligram instantly. Every result comes with a real-world comparison - like the weight of elephants or smartphones - to put the number in context.
Grams and milligrams are both metric units. Grams are used for food and cooking, while milligrams are used for medication and supplement dosages.
Need the opposite direction? Convert milligram to gram just as easily, or explore all our weight conversions.
Common gram to milligram conversions
| Gram (g) | Milligram (mg) |
|---|---|
| 1 | 1000 |
| 5 | 5000 |
| 10 | 10000 |
| 25 | 25000 |
| 50 | 50000 |
| 100 | 1 |
| 500 | 5 |
| 1000 | 1 |
Frequently asked questions
1 gram equals 1000 milligram.
Multiply by 1000. For example, 5 g = 5000 mg.
1 gram equals exactly 1000 milligrams. This is a fundamental metric conversion used constantly in pharmacy and nutrition.
1 milligram equals 0.001 gram.
100 gram equals 1 milligram.