Age calculator
Enter a date of birth to see an exact age in years, months and days, plus your age in weeks, days and hours.
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How exact age is counted
The calculator counts full years since the birth date, then full months, then the days left over. Months have different lengths, so the days are counted from the same date in the previous month. Change the second date to work out how old someone was, or will be, on any day.
Fun facts it shows
- The day of the week you were born
- Your age in months, weeks, days and hours
- How many days until your next birthday
- Your zodiac sign
Born on February 29? In years without a leap day, the calculator treats March 1 as your birthday.
Questions people ask
How do I calculate my age on a past or future date?
Change the second date from today to the date you want. The age updates instantly.
How many days old am I?
Enter your birth date; the total days lived shows with your age.