Your Life in Weeks

See your life as a grid of weeks: what you have had, what is still to come and how much of it lies before retirement.

Weeks to go

2,109

15 June 1985

Weeks lived

2,155

Weeks until retirement

1,329

Summers to go

Already lived

50.5 %

Your life in weeks

Lived 2,155 50.5%
Until retirement 1,329 31.2%
After retirement 780 18.3%

Total 4,264

Please note: The result is an estimate and has been rounded. Actual costs and values may differ, and no rights can be derived from this calculation.

A thought experiment with the expected age and retirement age you enter yourself. It is not a prediction.

How this number is calculated

The blocks use your input. Change a value above and they update with it.

Step 1 · Days since birth

As of5 October 2026 − Date of birth15 June 1985 =Days since birth15,087

Step 2 · Whole weeks lived

rounded downDays since birth15,087 ÷ Days per week7 =Whole weeks lived2,155

Step 3 · Weeks in total

Expected age (years)82 × Weeks per year52 =Weeks in total4,264

Step 4 · Weeks to go

Weeks to go2,109 =Weeks to go2,109

Step 5 · Retirement age in weeks

Retirement age (years)67 × Weeks per year52 =Retirement age in weeks3,484

Step 6 · Weeks until retirement

Weeks until retirement1,329 =Weeks until retirement1,329

Step 7 · Already lived

Whole weeks lived2,155 ÷ Weeks in total4,264 × To percent100 =Already lived50.5 %

Step 8 · Summers to go

rounded upWeeks to go2,109 ÷ Weeks per year52 =Summers to go41

How the calculation works

A human life in weeks: a way to make time tangible. Enter your date of birth, an expected age and a retirement age. You see how many weeks you have had, how many are still to come and how many of those lie before retirement. Each row in the grid is a year, each square a week.

The calculator counts the days from your date of birth to the as-of date (today by default) and divides them by 7. Only whole weeks count: those are your weeks lived. The total is the expected age you choose, times 52 weeks. What is left after subtracting the weeks lived are the weeks to go. The part until retirement runs to your retirement age times 52 weeks; if you are already past that age, it is 0. The rest of the grid are the weeks after retirement. It is a thought experiment, not a prediction: nobody knows how long they will live.

Formula

Weeks lived = days since birth ÷ 7, rounded down. Weeks in total = expected age × 52. Weeks to go = weeks in total − weeks lived. Weeks until retirement = retirement age × 52 − weeks lived, and never less than 0. Already lived = weeks lived ÷ weeks in total × 100%. Summers to go = weeks to go ÷ 52, rounded up.

Assumptions

A year counts as 52 weeks, so each row in the grid is exactly one year. A calendar year is slightly longer.
Only whole weeks count: a week that is still under way does not count as lived yet.
You choose the expected age and the retirement age yourself. The result is a thought experiment, not a prediction.
If you are already past the retirement age, there are 0 weeks until retirement.
Summers to go is the number of weeks to go divided by 52, rounded up.
Only whole days count: the time of birth and time zones are not taken into account.

Example calculations

The button fills in the calculator above, so you can carry on from there.

Born in 1985

Weeks to go
2,109

Date of birth 15 June 1985 · Expected age (years) 82 · Retirement age (years) 67 · As of 4 October 2026

On 4 October 2026, just over half of the 4,264 weeks have been lived.
Close to retirement

Weeks to go
998

Date of birth 2 March 1962 · Expected age (years) 84 · Retirement age (years) 67 · As of 4 October 2026

114 weeks to go until retiring at 67, with an expected age of 84.
Just grown up

Weeks to go
3,288

Date of birth 20 January 2008 · Expected age (years) 82 · Retirement age (years) 68 · As of 4 October 2026

At eighteen, more than three quarters of the grid still lies ahead.

Frequently asked questions

How many weeks are there in a human life?

That depends on the age you calculate with. At 80 years it is 80 × 52 = 4,160 weeks, at 90 years 4,680. The calculator uses 52 weeks per year, so each row of the grid is one year. A calendar year is slightly longer than 52 weeks, so the actual number is a little higher.

Which expected age do I enter?

You choose it yourself, between 60 and 100 years. It is a thought experiment: nobody knows how long they will live. Feel free to try a few ages with the slider and see how the grid changes.

What does the part until retirement mean?

Those are the weeks from the as-of date to the retirement age you enter. Your actual retirement date may turn out differently, for example because rules change or because of your own choices. If you are already past the retirement age, it shows 0.

Is my data stored?

No. Your input is not stored. Your date of birth is not added to the address bar or to a link you share, so anyone who opens the link does not see your date.

What if I am older than the expected age?

Then the calculator shows a message instead of a grid. Choose a higher expected age to see the weeks still to come. Because a year counts as 52 weeks here, the message can appear slightly before your birthday.

Why is the grid 52 squares wide?

That way each row is one year of life. You see at a glance how many rows are already filled and how many are still to come. With the as-of date you can also pick another day, for example your next birthday.

Last reviewed: 4 October 2026