Convert Milligrams to Grams
One milligram equals 0.001 grams. Type any value to convert milligrams to grams instantly — with a full reference table below.
Convert Milligrams to Grams
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How to convert Milligrams to Grams
To convert milligrams to grams, multiply by 0.001. One milligram equals 0.001 g, and one gram equals 1,000 mg.
- Take the value in milligrams — for example 7.5 mg.
- Multiply by 0.001 (the number of grams in one milligram).
- 7.5 × 0.001 = 0.0075 g.
Shortcut: the factor is a power of ten, so just move the decimal point 3 places to the left.
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 |
| 50 mg | 0.05 g |
| 100 mg | 0.1 g |
| Grams | Milligrams |
|---|---|
| 1 g | 1,000 mg |
| 2 g | 2,000 mg |
| 3 g | 3,000 mg |
| 4 g | 4,000 mg |
| 5 g | 5,000 mg |
| 6 g | 6,000 mg |
| 7 g | 7,000 mg |
| 8 g | 8,000 mg |
| 9 g | 9,000 mg |
| 10 g | 10,000 mg |
| 12 g | 12,000 mg |
| 15 g | 15,000 mg |
| 20 g | 20,000 mg |
| 25 g | 25,000 mg |
| 50 g | 50,000 mg |
| 100 g | 100,000 mg |
About converting Milligrams to Grams
Milligrams (mg) and Grams (g) are both units of weight. The exact factor is 1 mg = 0.001 g, so multiply by 0.001 to go from milligrams to grams (or divide to go back).
The conversion runs entirely in your browser. Need the reverse? Use the Grams to Milligrams converter, or the full unit converter for every unit at once.
Real-world weight in milligrams and grams
| Example | Milligrams | Grams |
|---|---|---|
| A US nickel coin | 5,000 mg | 5 g |
| 1 litre of water | ≈ 1,000,000 mg | ≈ 1,000 g |
| An Olympic men's barbell | 20,000,000 mg | 20,000 g |
| A typical checked-bag limit (economy) | ≈ 23,000,000 mg | ≈ 23,000 g |
“≈” marks typical values; the rest are defined or measured figures.
The units
One thousandth of a gram.
Used for: Medicine doses and nutrition labels.
One thousandth of a kilogram.
Used for: Cooking, postage and food packaging.
These factors are exact: since 1959 the avoirdupois pound is defined as exactly 0.45359237 kg, and the ounce as 1/16 of that.