You are 40 years old if you were born on February 17, 1984.
You are 40 years 1 month, 1 week, and 5 days old or 481 months old or 2,093 weeks old or 14,651 days old or 351,624 hours old or 21,097,440 minutes old or 1,265,846,400 seconds old You were born on a Friday.