Age Calculator application is an application used to calculate a person's age based on his date of birth. The basic idea behind the calculator is to calculate the number of years between today's date and an individual's date of birth. When a person enters his or her date of birth, the application calculates the difference between that date and today's date.

The simple algorithm for calculating age includes the following steps:

Extract your date of birth and current day's date.
Calculating the difference between years, months and days between the date of birth and the current date.
This difference is displayed as age in years, but it can also be displayed in months or days if more precise.