Milligrams to grams
grams = milligrams × 0.001
Reverse: grams to milligrams
How to convert milligrams to grams
One milligram is 0.001 grams, so multiply the number of milligrams by 0.001. For example, 20 milligrams is 20 × 0.001 = 0.02 grams. To go back, divide by the same number, or multiply by 1,000.
Quick estimate
Multiplying by about 0.001 gets within 0.0% of the exact answer, which is enough to check that a result makes sense.
Where it comes up
Mass conversions come up in cooking and baking, shipping and luggage limits, body weight, medicine doses and buying food by weight.
| 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 |
| 11 mg | 0.011 g |
| 12 mg | 0.012 g |
| 13 mg | 0.013 g |
| 14 mg | 0.014 g |
| 15 mg | 0.015 g |
| 16 mg | 0.016 g |
| 17 mg | 0.017 g |
| 18 mg | 0.018 g |
| 19 mg | 0.019 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 |
| 60 mg | 0.06 g |
| 70 mg | 0.07 g |
| 75 mg | 0.075 g |
| 80 mg | 0.08 g |
| 90 mg | 0.09 g |
| 100 mg | 0.1 g |
| 120 mg | 0.12 g |
| 150 mg | 0.15 g |
| 200 mg | 0.2 g |
| 250 mg | 0.25 g |
| 300 mg | 0.3 g |
| 400 mg | 0.4 g |
| 500 mg | 0.5 g |
| 750 mg | 0.75 g |
| 1,000 mg | 1 g |
| 1,500 mg | 1.5 g |
| 2,000 mg | 2 g |
| 5,000 mg | 5 g |
| 10,000 mg | 10 g |
Questions
How many grams are in a milligram?
0.001 grams.
How do I convert milligrams to grams in a spreadsheet?
Put the value in A1 and type =A1*0.001, then fill the formula down the column.
Are the values in the table exact?
They are calculated from the exact definitions of the units and rounded only for display. Open any row for the full working.