This question cannot be answered sensibly. A millilitre is a measure of volume, with dimensions [L3]. A milligram is a measure of mass, with dimensions [M]. Basic dimensional analysis teaches that you cannot convert between measures with different dimensions such as these without additional information.
As a simple mental exercise consider 40 mg of air and 40 mg of water. They will have very different volumes.
milli- means one thousandth 40 grams = 40 000 milligrams
The conversion of milligrams to milliliters is not straightforward, as it depends on the density of the substance. However, if you are working with water or a substance with similar density (1 g/mL), then 40 milligrams would be equivalent to 0.04 milliliters.
8.11 tsp 1 milliliter equals 0.202 US teaspoons. 1 teaspoon is 4.928 milliliters
There are 1000000 milligrams in a kilogram. Therefore 40 milligrams is 0.00004 kilograms.
40 milligrams = 0.0000882 pounds (approx).
There are approximately 40 teaspoons in 200 milliliters.
6000040 milliliters
Four centiliters is greater. Four centiliters equals 40 milliliters.
8.11 tsp 1 milliliter equals 0.202884136 US teaspoons. 1 teaspoon is 4.92892159 milliliters
40 milliliters is approximately 2.7 US tablespoons.
There are 40 000 000 milligrams
40