Your Life in Numbers

Where these numbers come from

Each statistic is computed from your total lifetime in seconds, multiplied by a per-second average from peer-reviewed physiology and published lifestyle surveys. We round generously and clearly label everything as an estimate. Because individual physiology varies enormously, none of these figures should be used clinically; they are here to make the abstract idea of "age" feel concrete.

• Heartbeats — average resting heart rate of about 72 beats per minute (American Heart Association adult range 60–100). Children\u2019s rates are higher, so totals for kids underestimate; adult totals are a useful midpoint.
• Breaths — adult resting respiratory rate of about 14 per minute (NIH normal range 12–20).
• Blinks — about 15 per minute while awake; we assume eight hours of sleep per night, during which blinking pauses.
• Hours of sleep — based on the National Sleep Foundation recommendation of seven to nine hours per night across adulthood; we use eight hours as a round midpoint.
• Meals eaten — three meals per day from age one onward.
• Full moons seen — one full moon every 29.53 days (the synodic month).
• Distance Earth has carried you — Earth orbits the Sun at about 107,000 km/h. Multiply by your lifetime and the total is staggering.
• Distance Earth has spun you — Earth\u2019s equatorial spin is about 1,670 km/h; your local speed is the cosine of your latitude times that. We use a midpoint estimate.

Why this is worth knowing

Age in years is an abstraction. Three billion heartbeats is not. Standing on a planet that has carried you a hundred billion kilometres around a star that you have never met is not. The point of this page is to take the most ordinary fact about you — how long you have been alive — and turn it back into something astonishing.