Joy of Tools

Age calculator

Enter a date of birth. You can also pick another date to see the age on that day.

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How to use it

  1. Enter the date of birth.
  2. Leave the second date as today, or change it to any other day.
  3. Read the exact age and the countdown to the next birthday.

Questions

How do you handle a February 29 birthday?

In years without February 29, we count the birthday on February 28.

How are months counted?

A month is complete when the same day number comes around again. If that day does not exist in a month, such as the 31st, the last day of that month is used.

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