Calculate Life Expectancy

Life Expectancy Calculator

Male Female

Never Smoked Former Smoker Occasional / Social Regular Smoker

Sedentary (No Exercise) Light (1-2 days/week) Moderate (3-4 days/week) Very Active (5+ days/week)

Mostly Processed/Fast Food Balanced / Average Very Healthy (High fiber/plants)

No major conditions Managed conditions (HTN/Cholesterol) Major conditions (Diabetes/Heart Disease)

Your Estimated Life Expectancy is

How is Life Expectancy Calculated?

Life expectancy is a statistical measure of the average time an individual is expected to live, based on year of birth, current age, and other demographic factors including biological sex. Our calculator uses a baseline derived from actuarial data and adjusts that figure based on lifestyle choices and health history.

Key Factors Impacting Longevity:

• Biological Sex: Historically, females have a higher life expectancy than males, often attributed to biological advantages and lower risk-taking behaviors.
• Lifestyle Choices: Smoking is the single most preventable cause of shortened lifespan. Regular physical activity and a diet rich in whole foods are shown to significantly increase years of high-quality life.
• Current Health: Managing chronic conditions like hypertension or diabetes through medication and lifestyle can mitigate their negative impact on longevity.
• The "Survivor" Effect: As you get older, your total life expectancy actually increases because you have already survived the risks associated with younger ages.

Realistic Examples

Example 1: A 35-year-old non-smoking female who exercises 4 times a week and eats a balanced diet may have an estimated life expectancy of 88.5 years.

Example 2: A 40-year-old male who is a regular smoker and has a sedentary lifestyle might see an estimate closer to 72.4 years.

Disclaimer: This calculator is for educational and informational purposes only and is based on general statistical averages. It does not constitute medical advice or a clinical diagnosis.

function calculateLifeExpectancy() { var age = parseFloat(document.getElementById('currentAge').value); var gender = document.getElementById('gender').value; var smoking = document.getElementById('smoking').value; var exercise = document.getElementById('exercise').value; var diet = document.getElementById('diet').value; var health = document.getElementById('health').value; if (isNaN(age) || age 120) { alert("Please enter a valid age between 0 and 120."); return; } // Baseline data (roughly based on US averages) var baseline = (gender === 'female') ? 81.0 : 76.0; var adjustment = 0; // Smoking Adjustments if (smoking === 'never') adjustment += 3; if (smoking === 'former') adjustment -= 1; if (smoking === 'occasional') adjustment -= 5; if (smoking === 'heavy') adjustment -= 10; // Exercise Adjustments if (exercise === 'active') adjustment += 4; else if (exercise === 'moderate') adjustment += 2; else if (exercise === 'none') adjustment -= 4; // Diet Adjustments if (diet === 'healthy') adjustment += 3; else if (diet === 'poor') adjustment -= 3; // Health Adjustments if (health === 'mild') adjustment -= 3; else if (health === 'severe') adjustment -= 8; var result = baseline + adjustment; // Survival adjustment logic: // If the user is already near or past the expectancy, we use a tail-end actuarial logic. // Statistically, if you reach 80, you are likely to reach 88. if (age >= result – 2) { result = age + (10 – (age * 0.05)); } var yearsRemaining = result – age; if (yearsRemaining < 0) { result = age + 2.5; // Floor for very old users yearsRemaining = 2.5; } document.getElementById('finalExpectancy').innerHTML = result.toFixed(1) + " Years"; document.getElementById('yearsLeft').innerHTML = "Based on your current age, you have roughly " + yearsRemaining.toFixed(1) + " years of life ahead."; document.getElementById('resultContainer').style.display = "block"; // Scroll to result document.getElementById('resultContainer').scrollIntoView({ behavior: 'smooth', block: 'nearest' }); }