You are 20 years old if you were born on October 18, 2003.
You are 20 years 5 months, 1 week, and 4 days old or 245 months old or 1,066 weeks old or 7,468 days old or 179,232 hours old or 10,753,920 minutes old or 645,235,200 seconds old You were born on a Saturday.