Free calculator
Life expectancy calculator
Eight questions, under a minute. You get your most likely remaining years, the range around them, and what each habit is costing or adding. The same model as the Expectancy app, run on this page.
Your estimate
left, most likely
Your estimate
Fill in as much as you like and your number appears here. It is worked out on this page by the same model the app uses, and nothing you type is sent anywhere or saved.
Even more data points
This asks about 5 factors. The app uses 116.
01
Every change, ranked by what it is worth to you
The app works out how many years each change that actually applies to you would add, and puts them in order, so you know where your effort counts.
02
111 more things that move the number
Blood pressure, diet food by food, diagnoses, family history, sleep quality, relationships, where you live and more. Skip anything, and see how complete your picture is.
03
What is ahead, not just how long
Your ten-year and lifetime risk of heart disease, diabetes, dementia, stroke and more, next to the average for your age.
04
Filled in from Apple Health or Health Connect
Blood pressure, resting heart rate, steps, sleep and body measurements, read-only. You see each reading and choose whether it counts.
05
The study behind every factor
Tap any factor to read the research it comes from and how strong that evidence really is.
Your estimate in the app is always free. The full version is $7.99 once. Or try it free for a week, then $1.99 a week.
Coming soon to the App Store for iPhone and iPad
How this works
This calculator starts from the World Health Organization’s life table for your country and sex, which says how long an average person your age is expected to live. It then adjusts for your answers using published studies: smoking from Jha and colleagues in the New England Journal of Medicine, weight from the Global BMI Mortality Collaboration, exercise from Arem and colleagues, alcohol from Wood and colleagues in The Lancet, and sleep from Cappuccio and colleagues.
Each answer is compared with the average person in the population rather than applied on top of it, because the national table already includes its smokers and its drinkers. Effects are combined so that overlapping habits are not counted twice. The result is a median, not a date: half of people like you live longer than it, and the range shows where most of them fall.
It is an estimate from population data, not a prediction about you and not medical advice. Every step of the method is written out, including the model’s biggest known limitation.