How is the remaining time calculated? Is it accurate?

It's based on the lifespan or target age you set (default 80). It's a simple estimate — not a medical prediction of your actual lifespan. The default 80 is close to global average lifespans; you can change it to any number.

Why does the grid use 52 columns and say 'approximately 1 year'?

One year is actually about 52.18 weeks. Using 52 columns is a practical approximation so the grid lines up neatly — one row is close to, but not exactly, one year. The grid legend notes this.

Where does the default of 80 come from?

80 is a round number close to average life expectancies in many countries (roughly 70–85). It's a general starting point, not a specific country's figure or a prediction. You're encouraged to change it.

What happens if I've already passed my assumed goal?

Progress shows 100% and the tool celebrates it as 'bonus time' — every additional week beyond your assumed goal is something to appreciate, not a reason to worry.

Is this medical advice or a lifespan prediction?

No. This is a personal reflection and visualization tool. It is not medical advice and does not predict your lifespan. For health questions, please consult a qualified healthcare professional.

Life in Weeks — Free Life Calendar From Your Birthday

This free life calendar visualizes your life as a grid of weeks — inspired by Tim Urban's 'Your Life in Weeks'. Enter your birthday and see how many days, weeks and months you've lived, your life progress %, and what comes next. Set your assumed lifespan or a target age (default 80) to adjust the grid. Everything runs in your browser; your birth date is never uploaded. The goal isn't to count down with fear, but to see time clearly and think about how you want to use it.

How to use

Enter your date of birth — your life grid and stats appear instantly.
Set your assumed lifespan (years) or a target age (default: 80) to adjust the total grid size.
The grid shows 1 cell = 1 week. Filled cells are weeks you've lived; the highlighted cell is this week; lighter cells are ahead.
Click 'Save as image' to download the grid as a PNG. Click 'Copy summary' to copy a short text to share.
Your date of birth stays in your browser — nothing is sent to any server.

What the numbers mean

Here's a breakdown of each figure the tool shows.

Days, weeks, months and age

Days lived is counted from your birth date to today using calendar days in your local timezone — daylight saving time offsets are absorbed by rounding. Weeks lived is the floor of days / 7. Months lived uses calendar months (not a fixed 30-day count). Age uses the standard birthday-based method; for 29 Feb birthdays, 28 Feb is treated as the equivalent date in non-leap years.

Life progress (%) and the goal

Progress is (days lived / total days) × 100, clamped to 0–100%. The total days is calculated from your birth date to your assumed goal date. The default goal is 80 — a round number close to the global average lifespan. It's a starting point, not a forecast. You're free to change it to any year or age that feels right for you. If you've already passed the goal, you're in bonus time.

Reading the life-in-weeks grid

Each cell is one week. Rows run left to right, each row roughly one year (52 weeks; 1 year ≈ 52.18 weeks, so 52 is an approximation — noted in the legend). Filled cells (purple) are weeks you've lived; the teal cell is the current week; grey cells are ahead. You can save the grid as a PNG to share.

Upcoming milestones

The tool lists the next few milestones sorted by how soon they arrive: your next birthday, the next round-number age (multiple of 10), the next 1,000-day mark, and the next 100-week mark. All are shown with how many days away they are.

Use cases

A nudge to think about how you use your time

Seeing the weeks laid out in a grid makes the abstract idea of 'time' tangible — not to induce anxiety, but to inspire intention. The weeks you've already lived are yours; so are the ones ahead.

A birthday or anniversary talking point

On a milestone birthday, see how many days you've lived and share the grid image. It's a beautiful way to mark the occasion.

Working back from a target age

Set a target age — say, 60 — to see how many weeks remain until then and how far along you are. Useful for long-term planning or goal setting.

A note about the lifespan estimate

The numbers shown are estimates based on the lifespan or target age you entered — not a prediction of your actual lifespan. This is not medical advice. The default of 80 is a general starting point close to global averages; many people live shorter or longer lives. If looking at these numbers causes you distress, please focus on today rather than the total count, and speak with a healthcare professional if you have concerns about your health.

Frequently asked questions

How is the remaining time calculated? Is it accurate?: It's based on the lifespan or target age you set (default 80). It's a simple estimate — not a medical prediction of your actual lifespan. The default 80 is close to global average lifespans; you can change it to any number.
Is my birth date saved or sent anywhere?: No. All calculations run entirely in your browser. Your birth date is never uploaded to a server or stored in any database.
Why does the grid use 52 columns and say 'approximately 1 year'?: One year is actually about 52.18 weeks. Using 52 columns is a practical approximation so the grid lines up neatly — one row is close to, but not exactly, one year. The grid legend notes this.
Where does the default of 80 come from?: 80 is a round number close to average life expectancies in many countries (roughly 70–85). It's a general starting point, not a specific country's figure or a prediction. You're encouraged to change it.
What happens if I've already passed my assumed goal?: Progress shows 100% and the tool celebrates it as 'bonus time' — every additional week beyond your assumed goal is something to appreciate, not a reason to worry.
Is this medical advice or a lifespan prediction?: No. This is a personal reflection and visualization tool. It is not medical advice and does not predict your lifespan. For health questions, please consult a qualified healthcare professional.