Free Life Expectancy Calculator: Answer 8 Questions and See How Long You’ll Live
Answer 8 simple questions about your daily habits and get your personalised life expectancy estimate instantly. Based on peer-reviewed longevity research. Takes under 60 seconds.
Free Life Expectancy Calculator
8 questions • 60 seconds • Personalised estimate
How many hours of sleep do you typically get per night?
Think about your average over the past few months.
How often do you do moderate physical activity (brisk walking, cycling, swimming)?
Moderate means you can talk but feel slightly out of breath.
How would you describe your typical diet?
Be honest — the more accurate, the more useful your result.
What is your current smoking status?
Include cigarettes, cigars and vaping if applicable.
How much alcohol do you typically consume per week?
1 unit = 1 small glass of wine, half a pint of beer, or a single spirit.
How would you describe your typical stress level?
Think about your work, personal life and general sense of wellbeing.
How connected do you feel socially?
Quality matters more than quantity here.
How regularly do you have health check-ups or medical screenings?
Including blood pressure, cholesterol, blood sugar checks etc.
Your habit breakdown:
Understanding Your Result
Your estimate is based on eight evidence-backed factors drawn from large-scale population studies, including research from the UK Biobank (500,000+ participants) and Harvard's longitudinal health studies. These factors are not equally weighted — some habits have significantly more impact than others.
Here's what each factor contributes — and why it matters:
1. Sleep Duration & Quality
Consistently sleeping fewer than 6 hours or more than 9 hours per night is associated with significantly higher mortality risk. Adults who sleep 7–8 hours show the lowest all-cause mortality in population studies. Poor sleep quality — even at normal duration — is linked to increased cardiovascular risk, insulin resistance and inflammation.
2. Physical Activity Level
Regular moderate exercise is one of the single most impactful longevity factors. Just 150 minutes of moderate activity per week (brisk walking counts) reduces all-cause mortality by approximately 31% compared to sedentary adults. The benefit plateaus at around 300 minutes per week — more is good but not dramatically better.
3. Diet Quality
Diet patterns matter more than individual foods. Higher consumption of vegetables, legumes, whole grains and fish — alongside lower consumption of processed meats and ultra-processed foods — is consistently associated with longer life expectancy. The Mediterranean and DASH dietary patterns show the strongest evidence base.
4. Smoking Status
Smoking reduces life expectancy by an average of 10 years. The good news: quitting before age 40 recovers approximately 9 of those years. Even quitting after 60 adds measurable years. The body begins repairing damage within weeks of stopping.
5. Alcohol Consumption
Heavy drinking (more than 14 units per week) significantly raises mortality risk through liver disease, cancer and accidents. A major Lancet analysis covering 195 countries concluded that the safest level of alcohol consumption is zero, when accounting for all health outcomes including cancer.
6. Stress & Mental Wellbeing
Chronic stress measurably accelerates biological ageing. Studies measuring telomere length show shorter telomeres in people with persistently high stress levels, corresponding to an estimated 9–17 years of additional biological ageing in severely stressed individuals.
7. Social Connection
A meta-analysis of 148 studies involving over 300,000 participants found that social isolation raised mortality risk by approximately 26% — comparable to smoking 15 cigarettes per day. Quality of relationships matters more than quantity.
8. Healthcare Access & Screening
Regular health check-ups enable early detection of conditions like hypertension, type 2 diabetes and certain cancers. Adults who attend routine screenings have measurably lower all-cause mortality than those who only visit when symptomatic.
Want to go deeper?
Read the full breakdown of how each daily habit adds or removes years from your life.
See the 7 Habits That Add or Remove Years From Your Life →You stay on this website. Free article, no sign-up.
This calculator is for informational and educational purposes only. It does not constitute medical advice, diagnosis or treatment. Results are estimates based on population-level research and do not account for your full medical history. Always consult a qualified healthcare professional for personalised health guidance.