Why 4,000
Four thousand weeks is about 76.7 years, close to the average American life span. The round number became well known as a book title about time management, and it is a useful shorthand: it sounds like a lot until you see it drawn. This sheet is exactly 4,000 boxes, 76 full rows of 52 weeks and a final row of 48.
Compared with our 90-year calendar, the 4,000-week grid stops where the average life does, so it is deliberately a little uncomfortable. Read our guide to the 4,000 weeks idea for what the number does and does not mean.
Using it
Shade your weeks lived. A 30-year-old has used about 1,565 of the 4,000; a 50-year-old about 2,609. The remainder is not a forecast for you, since plenty of people live well past it, but it is a fair picture of what is typical.
Printing
Prints on one page with age labels every five rows. Tabloid paper gives comfortably fillable boxes.
Other templates
90 years in weeks
The classic: 90 rows of 52 weeks, 4,680 boxes on one page.
80 years in weeks
4,160 boxes. Close to today's average life span, so slightly larger boxes.
100 years in weeks
A full century: 5,200 boxes for the optimists and the planners.
Life in months
1,080 boxes, two years per row. Big enough to write in.