* Milligrams (mg) measure mass or weight.
* Milliliters (ml) measure volume.
Think of it this way:
* You could have 1 mg of a very dense substance, like gold, that takes up very little space (few ml).
* You could have 1 mg of a very light substance, like feathers, that takes up a lot of space (many ml).
To convert between mass and volume, you need the density of the substance.
Formula:
* Volume (ml) = Mass (mg) / Density (mg/ml)
Example:
Let's say you have 1 mg of water. The density of water is approximately 1 g/ml (or 1000 mg/ml).
* Volume (ml) = 1 mg / 1000 mg/ml = 0.001 ml
So, 1 mg of water is equal to 0.001 ml.
