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.
Four centiliters is greater. Four centiliters equals 40 milliliters.
6000040 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
Milligrams are used to measure the mass of something not the volume.For the sake of argument, let us assume that the liquid that you are talking about has the same density as water. This would mean that the 40 milligrams that you propose would also measure out to 40 milliliters of volume.1 US teaspoon = 4.92892159 millilitersIf we take 40 ml and divide it by 4.92892159 ml/tsp we come up with 8.1153654546166152340840950565821or approximately 8.12 teaspoons in 40 millilitersNow, if the density of the liquid is higher than that of water there will be fewer teaspoons of the high density liquid per 40 milligrams. If lower, the opposite, there would be more teaspoons per 40 milligrams.