One mL equates to about 0.033 US fluid ounces.
The conversion formula is Milliliters = 29.5735 x ounces, so: Milliliters = 29.5735 x 50 Milliliters = 1,478.675
30cc = 30ml
4 mL. The reason is that mL means "milliliters", which means "thousandths of a liter". The quantity 0.004 L is the same as "four thousandths of a liter".
17.5