How many cc in 300 mg im?

Oh, dude, you're hitting me with some math now? Okay, so 300 mg is the same as 0.3 grams. And since 1 cc is equal to 1 milliliter, you'd need to know the density of the substance to convert grams to milliliters. But hey, I'm just here to make you laugh, not do your pharmacy calculations for you!