✦ Free to use · No signup to see results · 3 minutes

How old is your
body, really?

Enter your measurements and get your biological age, VO₂max percentile, and BMI — instantly, for free, without an account.

See how old your body really is — free → Or see a sample report first → Free  ·  Science-based  ·  GDPR encrypted  ·  No signup to see results
T M S J K
Joined by 2,400+ people who checked their biological age this month
This is what you get — a real example output
Longevity Dashboard  ·  Male, 41 Free result
72 HEALTH SCORE GOOD
Overall health score
Biological age
37.4 yrs
3.6 years younger than your calendar age
BMI  ·  Normal range
23.4
Weight relative to height — WHO classification
Under Normal Over Obese
Body Comp Cardio Bio Age Activity Lifestyle
Health radar — 5 dimensions
VO₂max estimate
42.3 ml/kg/min
68th percentile  ·  Above average
LowBelow avgAverageGoodExcellent

Example output based on a 41-year-old male, 180 cm, 75 kg, resting HR 62, moderately active. Your numbers will differ.

🔬
How the numbers are calculated: Energy expenditure uses the Mifflin-St Jeor equation (the current clinical standard for BMR). BMI follows WHO classification thresholds. VO₂max is estimated using the Uth formula (resting HR method), validated against laboratory measurements. Biological age uses a multi-factor model (BMI, activity, sleep, diet, stress) against ACSM/WHO population norms. These are the same published formulas used in academic research — not proprietary black boxes.

How it works

Free results first. No strings.

You see your real numbers before we ask for anything. The 12-week plan is an optional extra — not a paywall on your own data.

Step 01

Enter your data

Age, weight, height, resting heart rate, activity level. Takes about 3 minutes. No account needed.

✓ Free
Step 02

See your results

Instant biological age, VO₂max percentile, BMI zone, health score radar, and personalised tips — all before any login prompt.

✓ Free · No signup

What you get

Real metrics, not wellness fluff

Every number is calculated from published biomarker formulas. The free tool gives you the data. The upgrade gives you a plan to change it.

🧬

Biological age

See if your body is ageing faster or slower than your calendar age, with a breakdown of each contributing factor and what's driving the gap.

✓ Free
❤️

VO₂max estimate

Your cardio fitness score and where you rank in your age group — estimated from resting heart rate and body metrics using the Uth formula.

✓ Free
🔥

Energy & metabolism

Daily calorie needs, BMR, and exercise contribution — calculated using the Mifflin-St Jeor standard rather than generic averages.

✓ Free
📊

Health score radar

A five-dimension overview across body composition, cardio, biological age, activity, and lifestyle — so you can see at a glance where to focus.

✓ Free
📈

12-week plan

A week-by-week training and nutrition roadmap with activity-specific prescriptions (running, cycling, swimming, HIIT, and more) built from your biomarkers.

$4.99
📄

PDF health report

A personalised downloadable report with your full analysis, HR training zones, calorie breakdown, 12-week roadmap, and a one-page action card. Yours to keep or share with a doctor.

$4.99

Inside the report

Ten pages of personalised analysis

The $4.99 PDF report contains everything you saw in the free dashboard, plus the full breakdown, your training zones, a week-by-week plan, and a 12-week milestone roadmap.

🎯

Executive summary

A one-page cheat sheet: what to stop, what to start, what to keep doing — your single biggest lever identified and explained.

💓

Training heart rate zones

Your five personal HR zones (Zone 1–5) calculated from your HRmax, with exact BPM ranges and what each zone is for.

📅

Month-by-month training plan

Four weeks of sport-specific sessions (Foundation → Build → Push → Taper), colour-coded by type. A real programme, not generic advice.

🗓️

12-week milestone roadmap

Week-by-week projected milestones toward your target, with focus labels and a progress bar so you know exactly where you should be at week 6.


Pricing

Start free. One-time upgrade.

No subscription. No upsell inside the free tool. The $4.99 option appears only after you've already seen your own results.

Free
$0 forever

Everything you need to understand where you stand today. No account required to see results.

  • BMI & body composition
  • VO₂max score & percentile
  • Biological age snapshot
  • Health score radar (5 dimensions)
  • Energy & metabolism estimate
  • Personalised health tips
  • 12-week training plan
  • PDF health report
Calculate for free →
Most useful
Full plan
$4.99 one-time · no subscription

For people who want to act on what they find — not just see it once and forget it.

  • Everything in Free
  • Full 12-week training plan
  • Activity-specific session prescriptions
  • Personal HR training zones
  • Calorie & nutrition strategy
  • 12-week milestone roadmap
  • Personalised downloadable PDF report
Try free first, then unlock →
🔒 256-bit encryption 🛡️ GDPR compliant · no third parties 🔬 Mifflin-St Jeor · Uth VO₂max · WHO BMI ❌ No subscription, ever

Find out your biological age — free

No credit card. No signup to see results. Enter your measurements and get your numbers in 3 minutes.

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