How the costs are worked out
Everything is built from one weekly figure, and how that figure is reached depends on what you are buying — which is the detail most vape cost calculators get wrong.
Disposables and pods are counted per week, so the weekly cost is units × price. E-liquid bottles are counted per month, because that is how people actually buy them, so the weekly cost is units × price ÷ 4.33. That 4.33 is the average number of weeks in a month, 52 divided by 12, and it is used consistently in both directions: monthly cost is the weekly figure × 4.33 and yearly is weekly × 52. Daily is weekly ÷ 7. The five-year figure is the yearly figure times five, with no interest applied — this page does not compound anything, because the point of it is the outlay rather than an investment case.
The defaults that appear when you switch device type are ours and they are placeholders you should overwrite: four disposables a week at 8, five pods a week at 4, four bottles a month at 12. They are there so the page shows a real answer before you have typed anything, not because they describe your spending.
The comparison list divides your annual figure by a price we chose for each item and floors it, and where you cannot afford one whole unit it says what percentage of the way there you are instead of hiding the row. Those prices are ours too.
Every figure is in whatever currency you typed. The tool has no idea where you live and does not adjust for it.
Nothing on this page is medically reviewed and nothing above measures anything about you — it
explains a calculation. Where a number here is our own judgement rather than a published figure, the
note says so and cites nothing; where the health bodies disagree, it carries the disagreement.
Method last checked 21 August 2026.
