THE NUMBER
How many weeks are in a life?
An average life is only about 4,000 weeks — precisely 4,174 weeks across 80 years. That is the whole thing. Every birthday you have had, every one you have left, fits inside a number small enough to hold in your head.
Weeks are the unit that makes a life feel countable. The calculator below shows yours — how many you have already lived, and how many likely remain, based on your age today.
YOUR PERSONAL NUMBER
Enter your age above to see your personal weeks count.
WEEKS BY COUNTRY
The whole span, in weeks.
Life expectancy at birth, multiplied by 52.18 weeks per year. A life in Japan and one in Nigeria differ by more than 1,600 weeks — about 31 years.
| Country | Life expectancy | Weeks in a life |
|---|---|---|
| Japan | 84.6 yrs | 4,414 |
| Spain | 83.4 yrs | 4,352 |
| Australia | 83 yrs | 4,331 |
| Canada | 82.1 yrs | 4,284 |
| United Kingdom | 81.2 yrs | 4,237 |
| United States | 78.9 yrs | 4,117 |
| Mexico | 74.8 yrs | 3,903 |
| India | 70.8 yrs | 3,694 |
| Haiti | 63.2 yrs | 3,298 |
| Nigeria | 52.7 yrs | 2,750 |
Source: WHO and World Bank life expectancy at birth. For all 196 countries and your own number, use the full Life Clock.
WHY WEEKS
Small enough to fit on one screen. That is the point.
Years feel abstract and seconds feel infinite. Weeks sit in between — large enough to plan around, small enough to count. Four thousand of them is not many. You can draw the entire span as a grid and see your whole life on a single page.
A thirty-year-old has already spent more than 1,500 of their weeks. The ones that matter most — the weeks with your kids young, with your parents still here — are a far smaller slice than the total, and they are spent first.
You cannot add weeks to the end. You can only decide what the next one is for.
COUNT BETTER, TOGETHER
One number is a moment. Membership is the practice.
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