You are 24 years old if you were born on July 31, 1999.
You are 24 years 7 months, 4 weeks, and 1 day old or 296 months old or 1,286 weeks old or 9,008 days old or 216,192 hours old or 12,971,520 minutes old or 778,291,200 seconds old You were born on a Saturday.