You are 25 years old if you were born on December 31, 1998.
You are 25 years 3 months, 3 weeks, and 5 days old or 304 months old or 1,321 weeks old or 9,248 days old or 221,952 hours old or 13,317,120 minutes old or 799,027,200 seconds old You were born on a Thursday.