Convert Milligram to Gram
Use this free converter to change milligrams (mg) into grams (g). Milligram and gram both measure weight & mass. As a quick reference, 1 mg equals 0.001 g, and 1 g equals 1000 mg.
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Gram (g)
0.001
1 mg = 0.001 g
Weight & Mass conversion table
| Milligram | Gram |
|---|---|
| 0.01 | 0.00001 |
| 0.1 | 0.0001 |
| 0.5 | 0.0005 |
| 1 | 0.001 |
| 2 | 0.002 |
| 3 | 0.003 |
| 5 | 0.005 |
| 10 | 0.01 |
| 20 | 0.02 |
| 25 | 0.025 |
| 50 | 0.05 |
| 100 | 0.1 |
| 1,000 | 1 |
How to convert Milligram to Gram
Multiply the milligram value by 0.001 to get grams.
- Enter the number of milligrams you want to convert.
- The converter instantly shows the equivalent value in grams.
- Worked example: 15 mg × 0.001 = 0.015 g.
- Use the swap button to reverse the conversion (gram to milligram).
About these units
Milligram (mg)
- Definition
- A milligram (mg) is one thousandth of a gram, used for very small masses such as medication doses.
- History
- It is a standard metric subdivision using the prefix "milli-" (one thousandth).
- Current use
- Milligrams express drug dosages, vitamin content, and quantities in chemistry and pharmacology.
Gram (g)
- Definition
- A gram (g) is one thousandth of a kilogram, a small metric unit of mass used for light objects.
- History
- Defined in the 1790s as the mass of one cubic centimeter of water at its freezing point.
- Current use
- Grams are used for food portions, nutrition labels, postage, and laboratory work worldwide.
Frequently asked questions
How many grams are in a milligram?
There are 0.001 g in 1 mg. To convert, multiply the number of milligrams by 0.001.
How do I convert milligrams to grams?
Multiply the milligram value by 0.001 to get grams. For example, 10 mg = 0.01 g.
Is this milligram-to-gram converter free?
Yes. This converter is completely free, runs entirely in your browser, and requires no sign-up. Your inputs never leave your device.
Convert Milligram to other weight & mass units
| Unit | 1 Milligram equals |
|---|---|
| Kilogram (kg) | 0.000001 kg |
| Gram (g) | 0.001 g |
| Microgram (µg) | 1000 µg |
| Metric Ton (t) | 1.0000e-9 t |
| Pound (lb) | 0.0000022046226 lb |
| Ounce (oz) | 0.000035273962 oz |
| Stone (st) | 1.5747e-7 st |
| US Ton (ton) | 1.1023e-9 ton |
| Imperial Ton (long ton) | 9.8421e-10 long ton |
| Carat (ct) | 0.005 ct |