The cost of one cigarette
How many minutes of life does one cigarette cost?
About 20 minutes on average. The more useful answer is why that number has a limit.
Written by Lee H. Last reviewed 5 August 2026.
The short answer
About 20 minutes of life, on average, per cigarette smoked. More precisely, 17 minutes for men and 22 minutes for women. That split comes from Jackson, Jarvis and West, "The price of a cigarette: 20 minutes of life?", published in Addiction in 2025. The work is University College London's, commissioned by the UK Department of Health and Social Care, and it is the figure this site's calculator uses.
Why the number roughly doubled
An older estimate, about 11 minutes per cigarette, was widely cited for years. The 2025 study puts the figure closer to 20, roughly double. The difference is not a correction of an error so much as an update: the newer work drew on more contemporary data about how smoking affects survival, and accounted for factors the older calculation did not. This finding was widely covered when it was published, which is part of why the 20-minute figure is now the one most people have heard, even though it is more recent than the one it replaced.
The part most coverage leaves out
A per-cigarette figure is not something you can multiply without limit and still trust. Take someone who smokes 20 a day for 50 years. At 17 minutes each, that is a straight multiplication of about 11.8 years of life lost. But the 20-minute figure was itself derived from data on lifetime smokers, who lose roughly 10 years on average. A straight line through that math overshoots the very total it came from.
The reason is not that the per-cigarette figure is wrong. It is that no single person experiences the average cost of every cigarette they ever smoke independently and endlessly added together. The honest way to use the number is to stay linear, plain multiplication, for the range that covers almost everyone, and to soften the curve only at the extreme tail, so it levels off toward a ceiling. That is exactly what the model behind this site's estimate does: linear up to 8 years of straight-line loss, which covers the great majority of real smoking histories, and only above that point curving toward a ceiling of 12 years, close to the study's own lifetime figure. Stated plainly: a number that is exactly right for one cigarette can still overstate things if it is added up without any limit, and a model that is honest about that limit is worth more than one that lets the math run unchecked.
What the figure is actually useful for
Twenty minutes is small enough to be abstract. Its real use is at slightly larger scales, where it becomes something a person can picture. A pack a day comes to a few hours. A week of not smoking at 15 a day comes to about 1.2 days of life, by this site's own model, which lines up with the 2025 study's own headline framing: quit for a week, gain a day. That match falls out of the same math used everywhere else on this site, applied to one week. That is what makes the 20-minute figure worth having: as a unit that makes a single cigarette, and a week without one, legible in the same terms.
What it does not mean
Twenty minutes, or 17, or 22, is an average across a large population. It is not a prediction about any one cigarette, and it is not a prediction about any one person. Some people's smoking costs them more than the average, some less, and no single cigarette can be shown to have cost exactly its share. The figure is useful precisely because it holds across a population, and that is also exactly what it cannot tell you about an individual.
This page reports a motivational estimate built from population averages. It is not a prediction about any one person or any one cigarette, it does not diagnose, treat or prevent any condition, and it is not medical advice. No guarantee is made or offered about the accuracy of any figure or calculation on this site. Talk to a doctor or a quitline about stopping smoking. In the US, that is 1-800-QUIT-NOW.
The figure is useful precisely because it holds across a population, and that is also exactly what it cannot tell you about an individual.
Keep reading
Where to go next
How many years do you get back?
The four published bands, and why recovery follows a curve.
Is it too late at 50?
Less comes back than at 30. What comes back is still real years.
Quit smoking calculator
The years smoking has likely cost you, and the years quitting returns. Start here.
Sources
- Jackson, S. E., Jarvis, M. J. and West, R., "The price of a cigarette: 20 minutes of life?", Addiction, 2025.
See the full model on the methodology page, run your own numbers on the quit smoking calculator, or go back to all guides.