Biological age calculator

Enter the averages your Fitbit, Pixel Watch or other wearable shows. The estimate updates as you type.

Your age (years)

Resting heart rate (bpm)

Average sleep (hours/night)

Average daily steps

Moderate-to-vigorous minutes per week

Systolic blood pressure (optional, mmHg)

Estimated biological age

41.1

1.1 years older than your age

Resting heart rate
Zhang et al. 2016, CMAJ+0.2 yr
Sleep duration
Cappuccio et al. 2010, Sleep0.0 yr
Daily steps
Paluch et al. 2022, Lancet Public Health+0.8 yr
Active minutes
Arem et al. 2015, JAMA Intern Med+0.9 yr

Marker years are before the 0.6 overlap correction.

How this works

Each input is turned into years using hazard ratios from large mortality studies and the Gompertz law (years = ln(HR) ÷ 0.085). Full details and sources are on the methodology page. The full PulsVy model also uses HRV, VO₂ max and sleep efficiency straight from Google Health, and tracks the estimate over time against your real age.

Is this accurate?

It's an estimate from population studies, not a lab test. It's most useful as a trend: re-check after a few weeks of better sleep or more activity. Not medical advice.

See your real numbers from Google Health

PulsVy is in private early access. Join the waitlist to get your invite.