As Rob said it is all in how you do it. About 2drops is equal to one cigarette. 2 drops equals approx 10 puffs. So 10 puffs roughly one cigarette. Sorry it is hard for me to answer your question easily, as i said i have mine in hand constantly.and I was smoking about half a pack a day before, still how many puffs on an ecigg is equal to that of a regular cigg.