Convert Milligrams to Grams
1 mg = 0.001 g. Enter any value below.
Converted to every unit
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Milligrams to Grams formula
g = mg × 0.001
A milligram is one thousandth of a gram, common for medication and nutrient amounts. A gram is one thousandth of a kilogram, used for food and small items.
Worked example
To convert 5 mg, multiply by 0.001: 5 mg × 0.001 = 0.005 g.
Milligrams to Grams conversion table
| Milligrams | Grams |
|---|---|
| 1 mg | 0.001 g |
| 2 mg | 0.002 g |
| 3 mg | 0.003 g |
| 4 mg | 0.004 g |
| 5 mg | 0.005 g |
| 6 mg | 0.006 g |
| 7 mg | 0.007 g |
| 8 mg | 0.008 g |
| 9 mg | 0.009 g |
| 10 mg | 0.01 g |
| 12 mg | 0.012 g |
| 15 mg | 0.015 g |
| 20 mg | 0.02 g |
| 25 mg | 0.025 g |
| 30 mg | 0.03 g |
| 40 mg | 0.04 g |
| 50 mg | 0.05 g |
| 75 mg | 0.075 g |
| 100 mg | 0.1 g |
| 250 mg | 0.25 g |
| 500 mg | 0.5 g |
| 1,000 mg | 1 g |
Frequently asked questions
How many grams are in a milligram?
1 mg equals 0.001 g.
How do I convert milligrams to grams?
Use the formula g = mg × 0.001. For example, 5 mg = 0.005 g.
Last reviewed: October 2026 · Uses exact, internationally defined conversion factors.