Age Calculator

How Age is Calculated

The Age Calculator determines the age or interval between two dates. The calculated age is displayed in years, months, weeks, days, hours, minutes, and seconds. This calculator is based on the most common age system, where age increases on a person's birthday.

In some cultures, age is expressed differently. For example, in traditional Chinese age systems, people are born at age 1, and their age increases at the Traditional Chinese New Year rather than their birthday.

Note: For dates like Feb. 28 to Mar. 31, the calculator considers Feb. 28 to Mar. 28 as one month and adds the remaining days.