One day when I was in college, I felt the urge to calculate how old I was in weeks and that week just happened to be 1000 weeks old. Today. It happened again. I felt the urge to see how many weeks old I am and it comes out ~2000 weeks old: http://jalu.ch/coding/days/en?year=1979&month=3&day=11&adjust=-1 Your Age in Days Find out your age in days, weeks or months Birth date: 1979-03-11 (Mar 11) Today's date: 2017-07-08 (Jul 8) You are 13999 days old. Which is 1999 weeks and 6 days. That's 38 years and 119 days, including 10 leap days, or 38 years, 17 weeks and 0 days. In other words, that's 459.9 months. Therefore, you are 38.326 years old.