How to convert milligrams to grams
Milligrams and Grams both measure weight, so converting is a single multiplication. One mg equals 0.001 g, so you multiply your milligrams value by 0.001.
Formula: grams = milligrams × 0.001. For example, 10 mg = 0.01 g.
Milligrams to Grams conversion table
| Milligrams (mg) | Grams (g) |
|---|---|
| 1 | 0.001 |
| 2 | 0.002 |
| 5 | 0.005 |
| 10 | 0.01 |
| 25 | 0.025 |
| 50 | 0.05 |
| 100 | 0.1 |
| 1,000 | 1 |
Milligrams and Grams explained
Milligrams (mg): One-thousandth of a gram, used for medication doses and nutrition labels.
Grams (g): The base metric unit of mass, used for food, ingredients and small items.
When you'd convert milligrams to grams
You'll convert milligrams to grams whenever a measurement is given in one unit but you need it in the other — comparing milligrams and grams figures across regions, following a recipe or spec, or double-checking a number. Because 1 mg is exactly 0.001 g, the result is precise every time.
Frequently asked questions
How many grams are in a milligram?
One mg equals 0.001 g. Multiply your milligrams figure by 0.001 to get grams.
What is the formula to convert milligrams to grams?
grams = milligrams × 0.001. The factor 0.001 is exact.
What is 2 milligrams in grams?
2 mg = 0.002 g. You can enter any value in the converter above to get an instant result.
Is this Milligrams to Grams converter accurate?
Yes. It uses the standard conversion factor (1 mg = 0.001 g) defined by BIPM — SI Brochure (definition of the kilogram), so results are exact to several decimal places.