ToolNestGrams to Milligrams Converter
Convert grams to milligrams instantly with our free weight converter. 1 gram = 1,000 mg — type any value below and the result updates live.
Grams → Milligrams⇄ Swap: Milligrams → Grams
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Grams to Milligrams Formula
Milligrams = Grams × 1,000 (Grams = Milligrams × 0.001)
Weight conversion spans metric mass (milligrams, grams, kilograms, metric tons) and the US customary units (ounces, pounds, stone) used for body weight, groceries, and shipping.
Grams to Milligrams Conversion Table
| Grams | Milligrams | |
|---|---|---|
| 1 g | = | 1,000 mg |
| 2 g | = | 2,000 mg |
| 5 g | = | 5,000 mg |
| 10 g | = | 10,000 mg |
| 25 g | = | 25,000 mg |
| 50 g | = | 50,000 mg |
| 100 g | = | 100,000 mg |
About Grams and Milligrams
A gram is one-thousandth of a kilogram — about the mass of a paperclip. The base metric unit for food and small goods.
A milligram is one-millionth of a kilogram — the unit for medicine doses and nutritional supplement labels.
Frequently Asked Questions
How many milligrams are in one gram?
One gram equals 1,000 milligrams. Multiply any grams value by 1,000 to convert it.
What is the formula for converting grams to milligrams?
Milligrams = Grams × 1,000. To reverse it: grams = milligrams × 0.001.
How do I convert milligrams back to grams?
Divide the milligrams value by 1,000 (equivalently, multiply by 0.001). Or use our milligrams-to-grams converter going the other way.
Which is bigger, a gram or a milligram?
A gram is bigger — one gram equals 1,000 milligrams.