You cannot convert from mass to volume.
600mg
That is 1,000 mg
12 micrograms per mililiter
1000 milligrams equals one gram
5
470 milligrams
8,400 milligrams
10,000 milligrams.
11/5 mL 1.2 mL
one cup of salt will be equals to 273000.000 milligrams.
690000 milligrams equals 0.69kg
0.00110231pound mass equals to 500 milligrams