G to Mg ConverterRight in Your Browser
Convert grams (g) to milligrams (mg). The gram (g) is the metric unit for small weights — recipe ingredients, letters and nutrition labels worldwide. The milligram (mg) is one thousandth of a gram, the standard unit for medicine doses and vitamins worldwide. Everything is calculated locally in your browser — no server, and it works offline.
1000 mg
in milligrams (milligram)
To convert grams to milligrams, multiply the gram value by 1000.
Switch to Mg to GG to Mg Chart
| Grams (g) | Milligrams (mg) |
|---|---|
| 1 | 1000 |
| 2 | 2000 |
| 3 | 3000 |
| 4 | 4000 |
| 5 | 5000 |
| 10 | 10000 |
| 20 | 20000 |
| 50 | 50000 |
| 100 | 100000 |
Frequently Asked Questions
How many milligrams are in a gram?
One gram equals 1000 milligrams (1 g = 1000 mg). So to go from grams to milligrams, multiply the gram value by 1000.
What is the formula to convert grams to milligrams?
To convert grams to milligrams, multiply the gram value by 1000. For example, 10 g is 10000 mg.
What is 500 grams in milligrams?
500 grams — a standard bag of pasta — is 500000 milligrams. The converter above works for any value, entirely in your browser.
Is the gram to milligram conversion exact?
The factor used here is the defined value: 1 g = 1000 mg. Results are rounded to six significant digits for readability, so for high-precision work use the full factor.