Well, since the prefix milli- is one thousandth, 17 mg would equal 0.017 g.
1.5 grams (one & one half). 1,000 mg = 1 gram.
2 mg = one five-hundredth of a gram
394 mg is 0.394 grams, slightly less than 4/10 of one gram.
1000 milligrams
4.5 grams = 4,500 mg
There are 12,350 mg in 12.35 grams.
17 mg is .017 grams
1.2 mg = 0.0012 grams
0.751 grams is 751 mg.
855mg is 0.855 grams (mg x 0.001 = grams).
280mg is 0.28 grams (divide mg by 1,000 to get grams).