You are 19 years old if you were born on June 21, 2004.
You are 19 years 9 months, 4 weeks, and 1 day old or 238 months old or 1,034 weeks old or 7,242 days old or 173,808 hours old or 10,428,480 minutes old or 625,708,800 seconds old You were born on a Monday.