Grams to Milligrams
Convert grams (g) to milligrams (mg). Type in either box; the other updates as you go.
1 gram equals1,000 mg
1 milligram equals0.001 g
Formulamg = g × 1,000
How to convert grams to milligrams
To convert grams to milligrams, multiply the number of grams by 1,000.
mg = g × 1,000
Example
Convert 5 grams to milligrams:
5 g × 1,000 = 5,000 mg
Gram to milligram conversion chart
| Grams (g) | Milligrams (mg) |
|---|---|
| 1 g | 1,000 mg |
| 2 g | 2,000 mg |
| 3 g | 3,000 mg |
| 4 g | 4,000 mg |
| 5 g | 5,000 mg |
| 6 g | 6,000 mg |
| 7 g | 7,000 mg |
| 8 g | 8,000 mg |
| 9 g | 9,000 mg |
| 10 g | 10,000 mg |
| 12 g | 12,000 mg |
| 15 g | 15,000 mg |
| 20 g | 20,000 mg |
| 25 g | 25,000 mg |
| 30 g | 30,000 mg |
| 40 g | 40,000 mg |
| 50 g | 50,000 mg |
| 60 g | 60,000 mg |
| 70 g | 70,000 mg |
| 75 g | 75,000 mg |
| 80 g | 80,000 mg |
| 90 g | 90,000 mg |
| 100 g | 100,000 mg |
| 150 g | 150,000 mg |
| 200 g | 200,000 mg |
| 250 g | 250,000 mg |
| 500 g | 500,000 mg |
| 1,000 g | 1,000,000 mg |
Going the other way? See the milligrams to grams chart.
About the units
Gram (g)
A gram is one thousandth of a kilogram. Food packaging and recipes outside the US weigh ingredients in grams.
Milligram (mg)
A milligram is one thousandth of a gram. Medicine doses and nutrition labels use milligrams.
Frequently asked questions
How many milligrams are in a gram?
There are 1,000 milligrams in a gram.
How many grams are in a milligram?
There are 0.001 grams in a milligram.
How do you convert grams to milligrams?
To convert grams to milligrams, multiply the number of grams by 1,000.
What is 5 grams in milligrams?
5 grams equals 5,000 milligrams.
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