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Direct answer

How Many mg in a Gram? 1 g = 1000 mg

1 gram equals 1000 milligrams. Direct metric answer with formula, examples, and free mg ↔ g converter links.

Question

How many milligrams are in a gram?

1 gram (g) equals 1000 milligrams (mg).

1 g

1000 mg

1 mg

0.001 g

Formula

mg = g × 1000

Category

Weight / mass

Explanation

The prefix milli- means one thousandth, so 1 mg = 0.001 g and 1000 mg = 1 g.

To convert grams to milligrams, multiply by 1000. To convert milligrams to grams, divide by 1000.

This metric relationship is exact for mass labels in science, pharmacy, and nutrition.

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