How many ML is a Dram?

I really need help converting drams to ml for instance 1 dram =4-5 ml yet 4 drams = 15 ml.?

• I also saw somewhere that 2 drams = 8ml would that mean 16ml= 4 drams. Its for nursing. and when I use a converting calc online it gives me 1 dram = 3.7. SO what conversion do I use.

• Answer:

  The way I learned it in school was 1dram = 3.7ml. You can't go wrong with it.