Age calculator

The age calculator is like a time-traveling companion. With a few clicks, you may quickly and easily solve a question about your age or the interval between dates. It's time to simplify calculation with this quick, accurate, and incredibly user-friendly tool.
Age Calculator

Age Calculator


An age calculator is a handy tool that helps you determine the age or time interval between two dates. Here's how it works:

  1. Input Parameters:
    • Date of Birth: Enter the birthdate of the person.
    • Date of Interest: Provide another date to calculate the age or interval.
  2. Calculation Output:
    The age will be displayed in the following units:
    • Years
    • Months
    • Weeks
    • Days
    • Hours
    • Minutes
    • Seconds
  3. Different Age Systems:
    • Most Western countries use a system where age increases on a person's birthday. For example, if someone has lived for 3 years and 11 months, their age is 3, and it will increase to 4 on their next birthday.
    • In some cultures, age is expressed by counting years with or without including the current year. For instance, a person who is twenty years old is considered the same age as someone in their twenty-first year of life.
    • Traditional Chinese age systems consider people born at age 1, and their age increases at the Traditional Chinese New Year rather than their birthday. For instance, a baby born one day before the Traditional Chinese New Year would be 2 years old two days later, even though they are only 2 days old.
  4. Handling Months and Days:
    • When calculating age, there can be confusion regarding months and days, especially when the starting date falls at the end of a month.
    • For example, we count from February 20 to March 20 as one month. However, there are two ways to calculate the age from February 28, 2022, to March 31, 2022:
      • If we consider February 28 to March 28 as one month, the result is one month and 3 days.
      • If we treat both February 28 and March 31 as the end of the month, the result is one month.
    • Our calculations follow the former method.

Feel free to use online age calculators to find out your age, explore different age systems, and learn how to count age across various cultures! 🕰️🎂