This calculator displays age of a person in years, months, days, hours, minutes and total days, given the birthday date. This is somewhat limited version of How many days are there between two dates?, which does not require you to mess with second date - it shows the duration from given date to current date.
Save the calculation to reuse next time, to extension embed in your website or share share with friends.
You can also save your birthday and use permalink to always see your age without touching date value. Like that one, showing days passed since the birthday of Pierre de Fermat, a 17th century French lawyer, better known nowadays as a great mathematician.