About Life in Numbers

Life in Numbers is a free, curiosity-driven tool that translates your age into something visceral and real. Enter your birthday, and we calculate — live, in real time — how many times your heart has beaten, how many breaths you have taken, how many steps you have walked, and much more.

The idea is simple: your age in years feels abstract. But 2.5 billion heartbeats? That is something your body can understand.

How the numbers are calculated

All statistics are estimates based on peer-reviewed global averages. They are not medical data specific to you — they represent what a typical person your age would have experienced.

• Heartbeats — average resting heart rate of 70 beats per minute
• Breaths — approximately 16 breaths per minute at rest
• Steps — global average of 8,000 steps per day (Nature, 2017 accelerometer study)
• Sleep — average of 8 hours per day across the lifespan
• Blinks — approximately 15 blinks per minute while awake
• Blood pumped — approximately 5 litres per minute, circulating your full blood volume every minute
• Meals — global average of 3 meals per day

Privacy

We do not store your birth date or name. The calculation happens entirely in your browser. No data is sent to our servers. See our full Privacy Policy for details.

Contact

Questions, suggestions, or press enquiries? Get in touch.