Grams to Milligrams Converter
Convert gram to milligram instantly. Type a value below — the result updates as you type.
When you need to convert gram to milligram
Weight and mass conversions matter for cooking, shipping, fitness tracking and travel, where a parcel, body weight or recipe amount may be labelled in a system you don't use day to day.
Typical values: 0.5 g is about 500 mg, and 5 g works out to roughly 5000 mg. Because the ratio is fixed at 1000, you can scale any amount linearly — doubling the grams doubles the milligrams.
Bathroom scales, kitchen scales and shipping labels frequently mix metric and imperial, so converting cleanly avoids costly mistakes.
How to convert gram to milligram
One gram equals 1000 milligrams. To convert, multiply the number of grams by 1000:
milligrams = grams × 1000
For example, 10 grams × 1000 = 10000 milligrams.
Grams to milligrams conversion table
| Weight (g) | Milligrams (mg) |
|---|---|
| 1 g | 1000 mg |
| 2 g | 2000 mg |
| 3 g | 3000 mg |
| 5 g | 5000 mg |
| 10 g | 10000 mg |
| 20 g | 20000 mg |
| 50 g | 50000 mg |
| 100 g | 100000 mg |
FAQ
How many milligrams are in a gram?
One gram = 1000 milligrams.
How do I convert milligrams back to grams?
Divide by 1000, or use the milligrams to grams converter.