Chronological age refers to the period that has elapsed beginning with an individual's birth and extending to any given point in time. Chronological age is used in research and in test norm development as a measure to group individuals.

What is chronological age used for?

Your chronological age is the amount of time that has passed from your birth to the given date. It's your age in terms of years, months, days, etc. This is the primary way people define their age.

What is a chronological age example?

Definition of Chronological Age

For example, if you were asked how old you were on your 21st birthday, you probably responded by saying that you had just turned 21 years old. When you give someone your age based on the calendar date on which you were born, you are giving them your chronological age.