#death-calculator-pro {
background-color: #f4f4f9;
padding: 25px;
border-radius: 12px;
font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
color: #333;
max-width: 800px;
margin: 20px auto;
box-shadow: 0 4px 15px rgba(0,0,0,0.1);
line-height: 1.6;
}
#death-calculator-pro h2 {
color: #2c3e50;
text-align: center;
margin-bottom: 25px;
font-size: 28px;
}
.calc-grid {
display: grid;
grid-template-columns: 1fr 1fr;
gap: 20px;
margin-bottom: 25px;
}
@media (max-width: 600px) {
.calc-grid { grid-template-columns: 1fr; }
}
.input-group {
display: flex;
flex-direction: column;
}
.input-group label {
font-weight: 600;
margin-bottom: 8px;
color: #444;
}
.input-group input, .input-group select {
padding: 12px;
border: 1px solid #ccc;
border-radius: 6px;
font-size: 16px;
}
.calc-btn {
background-color: #e74c3c;
color: white;
border: none;
padding: 15px 30px;
font-size: 18px;
font-weight: bold;
border-radius: 6px;
cursor: pointer;
width: 100%;
transition: background 0.3s ease;
}
.calc-btn:hover {
background-color: #c0392b;
}
#death-result-box {
margin-top: 25px;
padding: 20px;
background-color: #fff;
border-left: 5px solid #e74c3c;
border-radius: 4px;
display: none;
}
.result-title {
font-size: 20px;
font-weight: bold;
margin-bottom: 10px;
color: #2c3e50;
}
.result-value {
font-size: 24px;
color: #e74c3c;
font-weight: 800;
}
.article-section {
margin-top: 40px;
border-top: 1px solid #ddd;
padding-top: 20px;
}
.article-section h3 {
color: #2c3e50;
margin-top: 25px;
}
function calculateLongevity() {
var age = parseInt(document.getElementById("currentAge").value);
var sex = document.getElementById("biologicalSex").value;
var smoking = document.getElementById("smokingHabits").value;
var activity = document.getElementById("activityLevel").value;
var diet = document.getElementById("dietQuality").value;
var stress = document.getElementById("stressLevel").value;
if (isNaN(age) || age 120) {
alert("Please enter a valid age between 1 and 120.");
return;
}
// Base Life Expectancy (Global Average starting point)
var baseExpectancy = 75;
// Sex Adjustment
if (sex === "female") {
baseExpectancy += 6;
} else {
baseExpectancy -= 1;
}
// Smoking Adjustment
if (smoking === "never") {
baseExpectancy += 3;
} else if (smoking === "former") {
baseExpectancy += 1;
} else if (smoking === "occasional") {
baseExpectancy -= 4;
} else if (smoking === "heavy") {
baseExpectancy -= 10;
}
// Activity Adjustment
if (activity === "sedentary") {
baseExpectancy -= 3;
} else if (activity === "active") {
baseExpectancy += 4;
}
// Diet Adjustment
if (diet === "healthy") {
baseExpectancy += 4;
} else if (diet === "poor") {
baseExpectancy -= 5;
}
// Stress Adjustment
if (stress === "low") {
baseExpectancy += 2;
} else if (stress === "high") {
baseExpectancy -= 4;
}
// Final Calculation Logic
var finalEstimate = Math.round(baseExpectancy);
var yearsRemaining = finalEstimate – age;
// Display Results
var resultBox = document.getElementById("death-result-box");
var longevityOutput = document.getElementById("longevity-output");
var remainingOutput = document.getElementById("years-remaining-output");
resultBox.style.display = "block";
longevityOutput.innerText = finalEstimate + " Years Old";
if (yearsRemaining > 0) {
remainingOutput.innerText = "Based on these factors, you have approximately " + yearsRemaining + " years of life ahead of you.";
remainingOutput.style.color = "#2c3e50";
} else if (yearsRemaining <= 0) {
remainingOutput.innerText = "You have already exceeded the statistical average for your profile! Every day is a bonus.";
remainingOutput.style.color = "#27ae60";
}
// Scroll to result
resultBox.scrollIntoView({ behavior: 'smooth', block: 'nearest' });
}
Life Expectancy & Longevity Calculator
Male
Female
Never Smoked
Former Smoker
Occasional Smoker
Heavy Smoker
Sedentary (Little/No Exercise)
Moderate (3 days/week)
Active (Daily Exercise)
Processed/High Sugar
Average/Balanced
Plant-Rich/Whole Foods
Low/Managed
Medium
High/Chronic
Your Longevity Estimate:
Note: This is a statistical estimate based on lifestyle factors and is not a medical diagnosis.
Understanding Life Expectancy Calculations
A "Death Calculator" or Life Expectancy Estimator uses actuarial data and health studies to project how long an individual might live based on their current age and lifestyle choices. While the name may sound morbid, these tools are essential for retirement planning, insurance underwriting, and health optimization.
Key Factors Influencing Your Results
- Biological Sex: Statistically, women tend to outlive men by 5–7 years due to biological and lifestyle differences.
- Smoking Status: Tobacco use is one of the most significant predictors of shortened lifespan, often reducing life expectancy by 10 years or more.
- Physical Activity: Regular cardiovascular exercise strengthens the heart and reduces the risk of metabolic diseases.
- Dietary Choices: Diets high in processed sugars and trans fats are linked to chronic inflammation, whereas whole-food diets promote cellular health.
Realistic Calculation Examples
Example 1: The Healthy Professional
A 35-year-old female who exercises daily, eats a plant-rich diet, and never smokes may see an estimated life expectancy of 88–92 years.
Example 2: The Sedentary Smoker
A 35-year-old male who smokes heavily, leads a sedentary lifestyle, and has high stress levels might see an estimate of 65–70 years.
How to Increase Your Estimated Lifespan
The good news is that lifestyle factors are "modifiable." By shifting from a sedentary lifestyle to moderate activity or by quitting smoking, you can statistically add years back to your life. Medical advancements and preventative screenings also play a massive role in extending longevity beyond the base statistical average.