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Life Stats

Enter your birthday and watch your life count up, live.

How many times has your heart beaten? How far have you travelled through space just by existing? Drop in your birthday and find out.

Showing your saved stats.

Paste it anywhere and dare a friend to check theirs.

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What is Life Stats?

Enter your date of birth and Life Stats turns it into a living portrait of the time you have already spent. Heartbeats and breaths climb by the second in front of you, alongside exact counts of the days, weeks, sunrises and full moons you have lived through, and the big historical numbers your lifetime happens to contain.

It is the inverse of a countdown. Instead of showing what is left, it shows the sheer volume of what has already happened, most of which you were not paying attention to.

The numbers that surprise people

  • Heartbeats. At a resting rate of around 70 beats a minute, you pass a billion heartbeats somewhere in your late twenties. It is running right now and has never once stopped.
  • Breaths. Roughly 12 to 20 a minute, which comes to something in the region of 8 million a year.
  • Sleep. At eight hours a night you have spent about a third of your entire life asleep. By forty that is well over thirteen years.
  • Full moons. Around 12 or 13 a year. Most people have seen fewer than five hundred and have consciously noticed a handful.
  • Days. A forty year old has lived roughly 14,600 of them, which sounds like a lot until you consider how few you could describe.

Why counting time backwards changes how it feels

Years are a poor unit for intuition because nobody experiences a year. You experience days, and a day is something you can picture. Converting a lifespan into days or sunrises produces a number that is simultaneously enormous and countable, which is the combination that actually lands.

There is a related and slightly unsettling point about why time seems to speed up. One common explanation is proportional: at five years old a year is twenty percent of everything you have experienced, and at fifty it is two percent. Another points to novelty, since memory encodes new experiences densely and routine ones barely at all, so a year of familiar routine leaves far less behind to look back on than a year of change. That is also the most actionable version, because novelty is something you can deliberately add.

What to do with the numbers

The heartbeat counter is the one people sit and watch, and it is worth noticing why. It is the only number on the page that is running whether or not you are paying attention, and it has been doing so continuously since before you were born. Everything else on the page is arithmetic. That one is not.

Related

Time Left runs the same idea forwards as a countdown, Life Checklist asks what you have actually done with the time, and Size of Life zooms out to physical scale instead. All free, calculated in your browser, with nothing stored or sent anywhere.

Frequently asked questions

How does Life Stats calculate my numbers?

From your date of birth, using standard averages for resting heart rate, breathing rate, sleep duration and lunar cycles. Everything is calculated in your browser and nothing is submitted anywhere.

How many times has my heart beaten?

At a typical resting rate of around 70 beats a minute, you pass one billion heartbeats somewhere in your late twenties. The exact figure depends on your resting rate, which varies considerably between people.

How much of my life have I spent asleep?

About a third at eight hours a night, which is over thirteen years by the age of forty.

Why does time feel faster as you get older?

Two common explanations. Proportionally, a year is twenty percent of a five year old's life and two percent of a fifty year old's. Separately, memory encodes novel experiences densely and routine ones barely at all, so familiar years leave less behind to look back on.

Is my birthday stored?

No. It is used only for the calculation in your browser and is never sent to a server or saved to an account.

Is it accurate?

The counts are arithmetic on population averages rather than measurements of you, so treat them as a good approximation rather than a personal medical figure.