Gram to Milligram
1 g =1,000mg
About Gram to Milligram
Grams to milligrams multiplies a gram figure by 1,000 to express it in milligrams. It is the natural conversion any time you need finer resolution — medicine doses, nutrition, lab work, or precision baking.
To convert grams to milligrams, multiply the value in grams by 1,000. Milligrams = Grams × 1000.
For example, 2 g × 1000 = 2,000 mg. A 2-gram salt portion is 2,000 milligrams.
Gram to Milligram table
| Gram (g) | Milligram (mg) |
|---|---|
| 0.1 | 100 |
| 0.25 | 250 |
| 0.5 | 500 |
| 1 | 1,000 |
| 2 | 2,000 |
| 5 | 5,000 |
| 10 | 10,000 |
| 25 | 25,000 |
| 50 | 50,000 |
| 100 | 100,000 |
Common use cases
- 01Expressing gram doses at milligram precision
- 02Translating nutrition labels between formats
- 03Laboratory and chemistry calculations
- 04Reading supplement and medication packaging
A bit of history
The gram and milligram are both decimal units in the metric system, with the milligram defined as one-thousandth of a gram. The relationship has been fixed since the metric system was standardized.
Frequently asked questions
How many mg are in a g?+
1 gram equals exactly 1,000 milligrams.
How many mg is 0.5 g?+
0.5 grams equals 500 milligrams.
How many mg is 5 g?+
5 grams equals 5,000 milligrams.
Is 1 g the same as 1000 mg?+
Yes — 1 gram is exactly 1,000 milligrams.
Need the reverse?
Convert Milligram to Gram →