The savings calculator is a tool that uses three basic questions about your smoking habits to determine money, life, and time saved over the course of a week, month, and year. QuitNet uses an estimate of 11 minutes off your life for each cigarette smoked.
This is a very rough estimate – it’s impossible to say exactly how much life you save by not smoking, because it depends on genetics, how healthy you are otherwise, and to some extent, luck. But 11 minutes is a reasonable guess and what the calculator uses. You can try it out at https://quitnet.meyouhealth.com/#/smoking_history/edit.
Shaw M, Mitchell R, and Dorling D. Time for a smoke? One cigarette reduces your life by 11 minutes. BMJ. England; 2000;320(7226):53.