Grams to Milligrams converter
Convert grams (g) to milligrams (mg) — results update instantly as you type.
Grams to Milligrams
To
1 g = 1,000 mg
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How to convert Grams to Milligrams
Mass measurements range from milligrams in a pharmacy to metric tons in shipping. The metric world weighs in grams and kilograms, while the US and UK still use ounces, pounds, and stones — this converter handles all of them exactly.
All units convert through the gram. One pound is defined as exactly 453.59237 grams and one ounce as exactly 28.349523125 grams, so results are precise to the international definition.
Formula
g × 1,000 = mg
Multiply your grams value by 1,000 to get milligrams. For the reverse, divide by the same factor.
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 |
| 100 g | 100,000 mg |
Common use cases
- Body weight between kilograms, pounds, and stones
- Recipe ingredients between grams and ounces
- Luggage allowances between kilograms and pounds
- Freight and cargo in metric tons
Frequently asked questions
One kilogram equals approximately 2.20462 pounds. Conversely, one pound is exactly 0.45359237 kilograms.