Age Calculator Age Calculator Calculate your age Date Month Year Definition of Age : The period in which one is alive or exist from birth is called age.. Information on Age Calculator: The duration of human life, measured in years from birthdate, is usually determine by a specific stage and physical development and includes legal responsibilities and abilities. The A ge calculator can confirm the age or interval among and between tow dates. The calculated age will be displayed in years, months, and days. In this system, age grows at the birthday or birth. How to find Age: A out of person age requires that we know the date birth as well as the date. A different forms asks users to fill in...