Milligram to Gram
1 mg =0.001g
About Milligram to Gram
Milligrams to grams is a metric conversion with 1,000 milligrams in every gram. It comes up constantly in medicine dosing, nutrition labels, and laboratory work where small masses are quoted in mg but easier to read as grams.
To convert milligrams to grams, divide the value in milligrams by 1,000 (or multiply by 0.001). Grams = Milligrams ÷ 1000.
For example, 500 mg ÷ 1000 = 0.5 g. A 500-milligram dose is half a gram.
Milligram to Gram table
| Milligram (mg) | Gram (g) |
|---|---|
| 1 | 0.001 |
| 50 | 0.05 |
| 100 | 0.1 |
| 250 | 0.25 |
| 500 | 0.5 |
| 750 | 0.75 |
| 1,000 | 1 |
| 2,000 | 2 |
| 5,000 | 5 |
| 10,000 | 10 |
Common use cases
- 01Converting medicine and supplement doses
- 02Reading nutrition and ingredient labels
- 03Laboratory and chemistry measurements
- 04Small-scale weighing in cooking and baking
A bit of history
The milligram is one-thousandth of a gram, itself the original metric base unit of mass. Both remain in everyday metric use, especially in medicine and science where small precise masses matter.
Frequently asked questions
How many g are in a mg?+
1 milligram equals 0.001 grams.
How many g is 500 mg?+
500 milligrams equals 0.5 grams.
How many g is 1000 mg?+
1,000 milligrams equals exactly 1 gram.
Is 250 mg equal to 0.25 g?+
Yes — 250 milligrams equals 0.25 grams.
Need the reverse?
Convert Gram to Milligram →