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Grams to Milligrams

1 g = 1000 mg — instant, accurate and free.

1 g = 1000 mg
Grams (g)
Milligrams (mg)
Result
mg
GramsMilligrams
1 g1000 mg
2 g2000 mg
5 g5000 mg
10 g10000 mg
25 g25000 mg
50 g50000 mg
100 g100000 mg
500 g500000 mg
1000 g1000000 mg

How to Convert Grams to Milligrams

1 g = 1000 mg

To convert from grams to milligrams, use the formula above. Multiply your value in grams by the conversion factor to get the result in milligrams.

About Grams

The gram (g) is a standard unit of weight measurement used in scientific and everyday contexts worldwide.

About Milligrams

The milligram (mg) is widely used in science and international contexts.

Frequently Asked Questions

QHow many milligrams in 1 gram?
1 gram equals 1000 milligrams.
QHow do I convert grams to milligrams?
Use the formula: 1 g = 1000 mg. Or simply enter your value in the converter above for an instant, accurate result.
QIs this converter accurate?
Yes. CVRT uses precise conversion factors based on international standards (SI units). Results are accurate to 8 significant figures.
QCan I convert milligrams back to grams?
Yes — click the swap button (⇄) or visit the Milligrams to Grams converter page.