Unfortunately, there is no way to accurately answer this question. Electronic cigarettes and traditional cigarettes operate and perform very differently. It’s almost like comparing apples and oranges. We are aware that these comparisons are made, but we’ve found these estimates to be highly inaccurate. We only provide information if we can be confident that it is correct; therefore, we do not make these comparisons.
The specifics of the e-cig being used (capacity, resistance, design of the atomizer, nicotine content of the juice, etc) as well as the frequency of puffing and the length of the drag are all variables that are unique to you. Even with identical hardware and juice, no one will vape the exact same way as you vape. Because all of this is unique to you, we suggest keeping an eye on how long a fill lasts for you. After a few refills, you'll have a good understanding of how much juice you'll need.