Convert grams to mg
Grams to milligrams. Enter a value to convert, or use the grams to mg chart further down the page.
1 gram equals 1,000 milligrams. Going the other way, 1 milligram = 0.001 grams.
How to convert grams to mg
To convert grams to milligrams, multiply the gram value by 1000. You can also divide by 0.001 to get the same answer.
mg = g × 1000
Worked example
Convert 15 g to milligrams:
15 g = 15,000 mg
grams to mg conversion chart
Use this grams to mg table for quick reference without typing anything.
| grams (g) | milligrams (mg) |
|---|---|
| 0.01 g | 10 mg |
| 0.1 g | 100 mg |
| 1 g | 1,000 mg |
| 2 g | 2,000 mg |
| 3 g | 3,000 mg |
| 5 g | 5,000 mg |
| 10 g | 10,000 mg |
| 20 g | 20,000 mg |
| 50 g | 50,000 mg |
| 100 g | 100,000 mg |
| 1,000 g | 1,000,000 mg |
What is a gram?
The gram is one thousandth of a kilogram. It is the practical unit of cooking, nutrition labels and postal weights in metric countries.
What is a milligram?
The milligram is one thousandth of a gram and is the standard unit for stating medicine dosages and micronutrient content.
Frequently asked questions
How many mg are in a gram?
1 grams equals 1,000 mg. Going the other way, 1 mg is 0.001 grams.
How do you convert grams to mg?
To convert grams to milligrams, multiply the gram value by 1000. You can also divide by 0.001 to get the same answer.
What is 10 grams in mg?
10 grams equals 10,000 mg. The conversion chart on this page lists the other values people look up most often.
Related weight conversions
Convert grams to other units
- mg to grams
- grams to kg
- grams to lbs
- grams to ounces
- grams to tonnes
- grams to stones
- grams to us tons
- grams to micrograms
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