You are 21 years old if you were born on January 31, 2003.
You are 21 years 2 months, 2 weeks, and 5 days old or 255 months old or 1,107 weeks old or 7,749 days old or 185,976 hours old or 11,158,560 minutes old or 669,513,600 seconds old You were born on a Friday.