🔬 Sleep Age Calculator

🔬 Sleep Age Calculator — How to Use

What This Tool Does

Sleep Age estimates how old your sleep habits make your body function — compared to what science expects at your real age. It translates abstract research into a single number.

When to Use It

Use it as a motivational check-in. Retake after making improvements to see the number drop.

Fields Explained

Real Age

Your actual age in years.

Duration

How many hours you typically sleep per night.

Quality

How rested you feel on waking — 1 is terrible, 10 is perfect.

Consistency

How regular your sleep and wake times are — 1 is completely random, 10 is the same time every day.

Other Factors

Snoring, exercise frequency, caffeine timing, and stress each add or subtract from your sleep age.

Reading the Result

Your estimated Sleep Age and a breakdown showing exactly which factors are ageing you versus keeping you young.

Pro Tips

Consistency has the biggest single impact — same wake time matters more than perfect duration.

Cutting caffeine after noon and reducing alcohol each subtract several sleep-age years.

A sleep age 10+ years above your real age is worth discussing with a doctor.

Try a Sample

Sample scenario

A 35-year-old with 7 hours of sleep, good quality (7/10), and mostly consistent habits.

Expected result: Sleep Age around 28–32 · Younger than real age · Factor-by-factor breakdown

🔬 Based on Sleep Science

Your Sleep Age Calculator

Poor sleep accelerates biological ageing. Answer 8 questions about your sleep habits and discover the gap between your calendar age and how old your body actually sleeps.

Tell us about your sleep

Your actual age

Between 13 and 90

Biological sex

Nightly sleep duration 7 hours

3h (severe)7–9h (optimal)12h (excessive)

Sleep quality (self-rated) 5 / 10

1 (terrible)5 (average)10 (perfect)

Schedule consistency (same bedtime nightly) 5 / 10

Snoring / sleep apnoea symptoms?

Weekly exercise frequency

Caffeine after 2 PM?

Sleep-time stress / anxiety level

🔬 Sleep Age Report

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sleep age

Your sleep age result

📊 Your Sleep Profile vs Benchmarks

🔍 What is adding years — and what is helping

Each factor shows its estimated impact on your sleep age. Negative = ageing faster. Positive = ageing slower.

🎯 How to Reverse Your Sleep Age

The science: Research shows that consistent 7–9 hour sleep, good sleep quality, and low-stress wind-down routines can measurably reduce biomarkers of cellular ageing including telomere length, inflammatory markers and cortisol levels.

💾 Save & Share

📋 Data backup code — copy and save this string anywhere to restore your results

📄 Download Your Sleep Age Report

Free PDF — no email required. Track your progress over time.

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Sleep Age is an educational estimate based on published sleep science research. It is not a medical measurement or diagnosis. Biological ageing is complex and influenced by many factors beyond sleep. Consult a qualified health professional for medical concerns.