Age

This calculator, when given the numerical values for the month, day, year, and (optionally) hour at which you were born, will tell you how long you've been alive.

It will tell you how many years, months, weeks, days, hours, minutes, seconds, and milliseconds you've been alive. It also tells you when your next birthday will be (in days, hours, minutes, and seconds.)

To use it, enter the following components of which you were born (in their respective boxes): number of the month, number of the day, the year (four digits), and hour (if you know it.) Use the drop-down menu next to the box for the hour (labeled "Hours") to select whether you were born in the AM or PM. Then press "Calculate."