Your Life in Weeks

Your Life in Weeks turns a single number — your date of birth — into a grid where every small square is one week you have lived or have still to live. The idea, popularised by Tim Urban's "Your Life in Weeks" essay, is that a human life is startlingly finite when you can see all of it at once: a lifetime of 80 years is only about 4,160 squares.

The maths is deliberately simple. Weeks lived are the whole weeks between your birthday and today; the total is your chosen life expectancy multiplied by 52, and the difference is the weeks that remain. Each row holds exactly 52 squares so one row reads roughly as one year. Filled squares are the weeks behind you, the amber square ringed in dark is the week you are living right now, and the pale squares ahead are still unwritten.

Everything runs in your browser. Your birthday is saved only in your device's local storage so the grid is there when you come back, and it is never uploaded or logged. When a version moves you, you can download it as a captioned PNG or share the summary — weeks lived and the percentage of your life so far — with a friend.