UnitConGrams to Milligrams Converter
Convert grams to milligrams for pharmaceutical dosing, supplement labeling, and precise chemical measurements. Many medication doses and nutritional values are expressed in milligrams while bulk quantities use grams.
Formula
Multiply grams by 1000 to get milligrams. To reverse, divide milligrams by 1000 to get grams.
Quick reference
| Gram (g) | Milligram (mg) |
|---|---|
| 0.001 | 1 |
| 0.005 | 5 |
| 0.01 | 10 |
| 0.05 | 50 |
| 0.1 | 100 |
| 0.25 | 250 |
| 0.5 | 500 |
| 1 | 1,000 |
| 5 | 5,000 |
| 10 | 10,000 |
About these units
Gram
The gram (one thousandth of a kilogram) has been part of the metric system since 1795. It is the standard unit for small-mass measurement in cooking, chemistry, and retail worldwide.
Milligram
The milligram (one thousandth of a gram) is used for extremely small masses, particularly in medicine and chemistry. Pharmaceutical doses, vitamin quantities, and trace minerals are routinely expressed in milligrams.