Cardio fitness
Use a known VO2max, a Cooper test, a recent race time, or resting heart rate if that is all you have.
Healthspan Estimator
A practical healthspan estimate, shown as a range
This healthspan estimator uses simple everyday inputs to show a lower, base, and upper outlook without pretending to know one exact future.
See where your trajectory leads — and how to shift it
Before You Start
This is a wellness estimator, not medical advice
Use this tool for education, planning, and habit coaching. The results are approximate and should not be used to diagnose disease, estimate exact lifespan, or make medical decisions.
- Results are shown as a plausible range because consumer inputs can be noisy or incomplete.
- The estimator is designed for general wellness, not diagnosis, treatment, or emergency guidance.
- If you have symptoms or questions about medical risk, talk to a qualified clinician.
Want to see the research and formulas behind the app? Visit the About & Methodology page.
Takes 2 minutes•No account required•Simple inputs
How this healthspan calculator works
Vitality Arc is a free healthspan estimator. You enter a few simple signals like cardio fitness, steps, strength, and body-composition context, then the app builds a lower, base, and upper outlook.
Instead of pretending to tell you one exact future, the app shows a realistic range and highlights the ages where your target activities start to look safe, borderline, risky, or no longer realistic.
The goal is not to diagnose disease. The goal is to make long-term fitness and healthspan planning easier to understand.
Why it shows a range
VO2max estimates, race times, resting heart rate, steps, and body-fat numbers can all be useful, but they are never perfectly clean.
Showing a range is our way of being honest about uncertainty. Better inputs narrow the estimate. Guessed or lightly sampled inputs widen it.
That makes the output more useful than a one-number wellness score that looks precise but hides the uncertainty.
Simple inputs you can actually use
You do not need lab testing to get started. This healthspan estimator is built around signals many people already have from a wearable, a race result, a simple field test, or a gym benchmark.
Movement and habits
Daily steps, weekly cardio, weekly strength minutes, and resting heart rate help tighten the estimate.
Strength and body composition
Deadlift, grip strength, push-ups, pull-ups, dead hang, height, waist, and body-fat estimates add more context to the long-term outlook.
Frequently asked questions
Plain-English answers about how the estimator works and what it does not claim.
What is a healthspan estimator?
It is a planning tool that uses everyday fitness and body signals to estimate a plausible range for future physical capacity and healthspan.
Why does Vitality Arc show a range instead of one exact number?
Because inputs like wearables, field tests, and body-fat estimates are noisy. A lower, base, and upper range is more honest than false precision.
Do I need a wearable to use this healthspan calculator?
No. A wearable helps with steps and resting heart rate, but you can still use simple manual inputs like age, VO2max, race time, strength benchmarks, height, and weight.
Is this a medical diagnosis or lifespan prediction?
No. Vitality Arc is a non-medical wellness estimator for education, coaching, and planning. It does not diagnose disease or predict your exact lifespan.
What is VO2max and why does it matter for longevity?
VO2max measures your maximum oxygen uptake during exercise. Research shows it is one of the strongest predictors of all-cause mortality and long-term physical independence. Vitality Arc uses it as the primary cardio fitness signal.
How does grip strength relate to healthspan?
Grip strength is a well-studied biomarker correlated with overall strength, functional independence, and mortality risk. Vitality Arc uses it as a high-confidence strength input alongside deadlift, push-ups, and pull-ups.
What is the difference between healthspan and lifespan?
Lifespan is how long you live. Healthspan is how long you stay physically capable and independent. Vitality Arc focuses on healthspan by tracking cardio fitness, strength reserve, and body composition against age-adjusted benchmarks.
Can I use push-ups and pull-ups instead of a deadlift or grip test?
Yes. Vitality Arc accepts push-ups and pull-ups as a mid-confidence bodyweight strength fallback. They rank below deadlift and grip in precision but above dead hang, and generate a bodyweight strength reserve score with training recommendations.