Time & life in numbers
The stats that make finite time real — hours, weeks, summers, lifetimes.
Start with the How many weeks do you have left guide.
How many books can you actually read before you die?
At a book a week, a typical adult life leaves room for roughly 2,000 to 3,000 books. Here's the real math, and why the number should change how you choose.
How many hours do you work in a lifetime? (The number that should change how you clock in)
A full-time career adds up to roughly 80,000 to 90,000 working hours. Here's the math, how it stacks against sleep and eating, and why it matters.
How many hours are in a year? (And how few you're really awake for)
There are 8,760 hours in a year. Here's the exact math, how many you spend asleep and at work, and how many are genuinely yours to spend.
How many hours of sleep do you get in a lifetime?
Sleeping eight hours a night for eighty years adds up to roughly a third of your life — about 26 years, or a quarter of a million hours, spent asleep.
How many minutes are in an average human life?
An average life of about 80 years holds roughly 42 million minutes. Here's the exact math, why the number feels small, and how to spend it well.
How many productive hours are actually in a day?
Most people manage two to four hours of genuinely focused work a day, not eight. Here's why, and what to do with the honest number.
How many weekends do you have left with your kids before they move out?
If your child is 8, you have roughly 500 weekends left before they turn 18. Here's how to count yours, and why the number is worth knowing.
How much screen time will you rack up in a lifetime?
At current averages, screens can eat well over a decade of your waking life. Here's the math, and how to tell lived screen time from lost.
How many years of your life do you spend commuting?
A typical commuter spends roughly 3 to 5 years of waking life traveling to and from work. Here's the math, and how to make those hours count.
How much of your life do you spend eating? The full lifetime breakdown
Most people spend somewhere around 3 to 4 years of life eating. Here's how that math works, what it leaves out, and why the hours count as lived.