Catalyst Performance
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Catalyst Performance
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Free Tools
Five free, evidence-based calculators, one for each pillar of healthspan plus an overall read. Each one gives you a quick estimate and what it means. They are estimates, not measurements: the full version, measured properly across all four pillars on the same scale we use in studio, is the free Healthspan Audit.
Run a health, fitness, or wellness site? Embed any of these calculators for free with one line of code.
The Big Picture
How old is your body, really? Estimate the age at which your cardiorespiratory fitness would be average.
Open calculator →The four pillars
Cardiorespiratory
See your VO2 max percentile for your age and sex, or estimate it from your resting heart rate.
Open calculatorStrength
Check your handgrip against the AWGS sarcopenia threshold, one of the best simple predictors of healthy ageing.
Open calculatorBody Composition
A better signal than weight or BMI. The target is simple: keep your waist under half your height.
Open calculatorStability
A no-equipment floor test scored out of 10, linked to all-cause mortality in published research.
Open calculatorThe Catalyst Healthspan Audit scores all four pillars on a single 0 to 10 scale in three minutes, the same framework we use in studio. It is the front door to the 4-Pillar Healthspan Assessment.
Take the free Healthspan Audit