A science-based longevity assessment for estimating biological age and life expectancy.

Find out
how long you'll live
and what could change it

Backed by peer-reviewed longevity research and actuarial science · Free & Private — nothing leaves your device
What we measure
Your result Evidence-Based
93
years · Your potential
26
years · Biological age
SPORT +3 years
Full report →

A small set of factors drives most of your longevity risk

Find out which ones apply to you, and which you can still change

What we measure

The 30 factors Halo's model is built on

Methodology

Built on actuarial science, not guesswork

Halo's longevity model combines peer-reviewed mortality research with the same actuarial methods insurers use to price risk — translated into a set of factors you can actually see and act on.

Peer-reviewed research Actuarial scoring model Transparent methodology
How we built the longevity model
From research to a score you can understand
Our methodology →
Research
Step 1
Start from peer-reviewed longevity and mortality studies with strong, replicated effects
Filter
Step 2
Keep only associations with robust statistical significance and meaningful effect size
Weight
Step 3
Convert each association into an estimated years-of-life impact, high or low
Score
Step 4
Combine your answers into a biological age and life expectancy estimate
30
Factors
The final set of high-confidence, evidence-based longevity factors
How it works

Four steps to your longevity report

1
Answer a few questions
Around 25 quick questions on your lifestyle, biomarkers, and family history — about 5 minutes, done on your own device.
2
See your score instantly
Get your estimated biological age, life expectancy, and a breakdown of what's helping or hurting it.
3
Know what to change
See exactly which factors would add the most years, plus which blood tests are worth asking your doctor about.
4
Track it over time
Retake the assessment periodically to see how your choices are moving the needle.

A clear, science-backed view of your future

Free, no strings attached

Take the full assessment and see your complete results — no account, no payment, no obligation.

Grounded in real science

Built on peer-reviewed longevity research and the same actuarial modeling insurers use to price risk.

Private by design

Your answers and results stay on your device. Nothing is sent to a server unless you choose to share it.

Impact map

Longevity impact map

Every factor in Halo's scoring model, ranked from the biggest risk to the biggest upside for your estimated life expectancy.

Adds years Takes years