Your Life in Weeks
See your whole life as a grid where every square is one week. The weeks you have lived are filled in, you can mark your milestones, and print your grid or download it as an image.
How the grid is made
Each row holds 52 weeks, a little under one calendar year, and the grid has one row for each year you choose. We count the full weeks from your birth date to today and fill in that many squares, starting at the top left. This week is the yellow square.
Because a year is 52 weeks and one or two days, the filled squares drift about one square every five or six years from your exact birthdays. The grid is a picture of time, not a calendar.
Prefer exact numbers? See how many days old you are, the Age Calculator or the Retirement Countdown.
Worked example
Born March 21, 1996. On October 2, 2026 that is 11,152 days, or 1,593 full weeks. In a 90-year grid of 4,680 weeks, 1,593 squares are filled in, about 34% of the grid.
How to count the weeks you have lived
- Count the days from your birth date to today. How Many Days Old Am I does this for you.
- Divide by 7 and drop the remainder. That is the number of full weeks you have lived.
- For a quick estimate, multiply your age by 52 and add the weeks since your last birthday.
Born March 21, 1996: on October 2, 2026 that is 11,152 days. 11,152 divided by 7 is 1,593 with 1 day left over, so 1,593 full weeks. The quick estimate gives 30 × 52 + 27 = 1,587, a few weeks short, because every year is 52 weeks and one or two days.
How many weeks are in a life?
Multiply the years by 52. Here is how many squares a grid has for some common lengths.
| Life length | Weeks |
|---|---|
| 60 years | 3,120 |
| 70 years | 3,640 |
| 76.5 years (US men, 2024) | 3,978 |
| 79 years (US average, 2024) | 4,108 |
| 81.4 years (US women, 2024) | 4,233 |
| 90 years (the classic grid) | 4,680 |
| 100 years | 5,200 |
US figures: life expectancy at birth in 2024, from the CDC's National Center for Health Statistics. Week counts are years times 52, rounded.
A life in weeks, stage by stage
Most of a 90-year grid is spoken for by stages everyone passes through. Here are rough stages, in our own grouping.
| Stage | Weeks | Share of 90 years |
|---|---|---|
| Childhood and school, to 18 | 936 | 20% |
| College age, 18 to 22 | 208 | 4% |
| Working years, 22 to 65 | 2,236 | 48% |
| 65 to 90 | 1,300 | 28% |
Weeks are years times 52. The working years alone are 2,236 weeks, nearly half the grid.
Choosing your grid length
The grid starts at 90 years, the length used in the original chart, and you can set anything from 40 to 120. There is no right answer: the length only changes how many empty squares are left.
If you want a number based on data, the CDC puts US life expectancy at birth at 79 years for 2024: 76.5 for men and 81.4 for women. That is an average for everyone born that year, though, not a forecast for you. Life expectancy also grows as you get older: Americans who had reached 65 could expect about 19.7 more years, taking them to nearly 85.
A long grid of 90 or 100 years feels hopeful and roomy, while a shorter one makes the chart feel more urgent. Try a few lengths and keep the one that means the most to you.
Where the life in weeks idea comes from
The chart was made popular by Tim Urban in a May 2014 post on his blog Wait But Why, "Your Life in Weeks". He drew a 90-year life as 90 rows of 52 squares, 4,680 in all. Wait But Why also sells the chart as a poster; here you can make and print your own, filled in to this week.
The same idea gave Oliver Burkeman the title of his 2021 book Four Thousand Weeks: Time Management for Mortals. If you live to 80, you get just over 4,000 weeks (4,174, counting leap days). Seen that way, the question is not how to fit everything in, but which few things deserve your weeks.
The idea works because a week is a size we understand. A life measured in years feels long and vague; a few thousand small squares feels countable, and the empty ones look like choices still to be made.
Ways to use your grid
- Mark the chapters. Add your milestones under the grid, such as school, first job, moves and big trips, or print it and color in whole stretches. Seeing them as blocks of weeks puts them in proportion.
- Mark a plan. Milestones can be in the future too. Add the week of a trip or a goal and watch the squares between now and then.
- A birthday check-in. Each birthday, print a fresh grid and look at the row you just finished. What filled it, and what do you want in the next one?
- Plan in weeks, not years. A goal 3 years away is about 156 squares. Counting them makes long plans feel concrete.
- A wall chart or wallpaper. Download the PNG as a phone or desktop background, or print it for your desk.
- For someone else. Make one for a new baby or a parent's birthday: a grid with a few squares filled in, or with decades of them, says a lot without words.
Life in Weeks questions
How many weeks are in a human life?
About 4,680 in a 90-year life and 4,108 at the US average of 79 years. The count looks different from later in life: someone who has reached 65 can expect about 19.7 more years on average, or roughly 1,024 weeks.
How many weeks have I lived?
Divide your age in days by 7 and drop the remainder; the tool does this and fills in that many squares. Two landmarks to watch for: you complete 1,000 weeks at about 19 years and 1 month, and 2,000 weeks at about 38 years and 3 months.
How many weeks do I have left?
Grid length minus the weeks you have lived. Born March 21, 1996, on October 2, 2026: a 90-year grid leaves 3,087 squares, and the 79-year preset leaves 2,515. Changing the length is the only thing that moves this number, so treat it as a picture, not a forecast.
How many summers do I have left?
Enter your date of birth and a life length above. The tool counts the summers, June to August, that are not over yet and start before the end of your grid, along with the birthdays still to come.
Can I print my life in weeks chart?
Yes. Print gives a clean sheet with just your grid, and Download PNG saves an image with your totals. Milestones you add under the grid show as teal squares, and up to 12 of them print and download with it, so pick the chapters that matter most first.
What is a life calendar or memento mori calendar?
Other names for the same chart: a grid of your whole life with one square for each week, often printed as a poster. Memento mori is Latin for "remember that you will die": the empty squares are a reminder that time is limited, so spend it on what matters.
Is this life in weeks calculator free?
Yes, with no sign-up. To keep your grid, choose Copy link and save the link: it holds your birth date and grid length, so the grid opens filled in to the current week each time. Your date is not sent to us; it is only in that link.
Published October 12, 2026. Last updated October 12, 2026. Uses the Gregorian calendar and your device's time zone.