Your Life in Weeks Visualize
Enter your date of birth above to see your life as a grid of weeks.
Related Tools
How Many Weeks Are in a Life?
An 80-year life is about 4,174 weeks, a 90-year life about 4,696. Laid out as one small square per week, a whole life fits on a single page. Enter your date of birth to see your own grid: the weeks you've lived, the weeks left under a lifespan you choose, and the percentage already used.
How to Use the Life in Weeks Calculator
- Enter your date of birth.
- Choose an assumed lifespan. 80 is the default, but it's your choice and not a prediction.
- Read your weeks lived, weeks remaining, weekends remaining and percentage lived, then scroll the grid. The highlighted square is this week.
Life in Weeks Chart
| Lifespan | Total weeks |
|---|---|
| 70 years | 3,652 |
| 75 years | 3,913 |
| 80 years | 4,174 |
| 85 years | 4,435 |
| 90 years | 4,696 |
| 100 years | 5,217 |
How Many Weeks Have I Lived? (Out of an 80-Year Life)
| Age | Weeks lived | Share of 80 years | Weeks left |
|---|---|---|---|
| 20 | 1,043 | 25.0% | 3,131 |
| 25 | 1,304 | 31.2% | 2,870 |
| 30 | 1,565 | 37.5% | 2,609 |
| 35 | 1,826 | 43.7% | 2,348 |
| 40 | 2,087 | 50.0% | 2,087 |
| 50 | 2,608 | 62.5% | 1,566 |
| 60 | 3,130 | 75.0% | 1,044 |
How It's Calculated
- Weeks lived = days since your birth ÷ 7, rounded down.
- Total weeks = lifespan in years × 365.25 ÷ 7 (the .25 covers leap years).
- Weeks remaining = total weeks − weeks lived. Each remaining week has one weekend, so weekends remaining is the same number.
Where the Idea Comes From
The week grid became famous through Tim Urban's 2014 essay Your Life in Weeks on Wait But Why, which drew a 90-year life as 52 squares a row. Oliver Burkeman's book Four Thousand Weeks made the same point about an 80-year life. Read our summary of Four Thousand Weeks. The same "memento mori" idea is why some people print their grid as a poster and colour in a square each week.
Ways to Use Your Grid
- Plan big goals by weeks: a two-year project is about 104 squares. Break it into steps with the goal planner.
- Check where the time goes: see how many of your waking years go on screens with the screen time calculator.
- Count what's left of a hobby: find out how many books you can still read with the books before you die calculator.
Want your exact age in days, weeks, hours and seconds instead? Use the days old calculator. Nothing you enter here is stored or sent anywhere; it all runs in your browser.
How the Life in Weeks Calculator Saves You Time
Counting the weeks you have lived and drawing a grid by hand would take an evening. The calculator draws your whole life grid from one date in a second.
Frequently Asked Questions
How many weeks are in an 80-year life?
How many weeks have I lived?
Is the lifespan number a life expectancy prediction?
Is this the same as Tim Urban's Your Life in Weeks?
How many weekends do I have left?
What happens if I've lived longer than the lifespan I entered?
Last updated: September 2026