Free tool
Age Calculator: How Old Am I?
Find the exact age of anyone, including a child or baby, in years, months, and days. See total weeks and days and how long until the next birthday.
How to use the Age Calculator
- Pick the date of birth.
- Leave the second date empty to use today, or pick another date to find the age on that day.
- Read the age in years, months, and days, plus totals and the days until the next birthday.
Why exact age matters
Exact age is handy for school sign-ups, sports leagues, forms, and tracking a baby's growth. Many forms ask for age in years and months, not just years.
Fun ways to use it
- Find out how many days old you are
- Count down to your next birthday
- Work out someone's age on a past or future date
Planning a celebration? See how many days are left with our Christmas countdown.
Frequently asked questions
How do I calculate my exact age?
Subtract your birth year from the current year. If your birthday has not happened yet this year, subtract 1. Then count the months and days since your last birthday. This calculator does all of it for you.
How do I work out a baby's age in months?
Enter the baby's birth date. The calculator shows the age in years, months, and days, and the total months, which is how doctors usually track young children.
Does the calculator count leap years?
Yes. It uses real calendar dates, so leap years and months with different numbers of days are counted correctly.