Age Calculator
Exact age in years, months, days + next birthday.
Born on a Thursday Next birthday Tuesday, 2027-06-15 (turning 32) Days until birthday 283
About the Age Calculator
Work out an exact age in years, months and days as of any reference date, not just today. Totals in months, weeks, days and hours accompany the headline figure, plus birthday facts: the weekday you were born, the date and weekday of the next birthday and a countdown in days to it.
How to use the Age Calculator
- Enter the date of birth in the first date field.
- Set the Age at date โ today by default โ or press Use today.
- Read the Age tile in years, months and days, plus the totals underneath.
- Check the Birthday facts box for the birth weekday and next birthday countdown.
Age Calculator FAQ
Why can the age at date be different from today?
Because legal or school cutoffs often need an age on a specific date โ an exam day, a visa date โ so the reference date is fully editable instead of being locked to today.
How are month lengths handled?
When the day of month has not been reached yet, the calculator borrows the correct number of days from the previous month, so 31 January to 1 March gives exactly the right month and day split.
Does it handle leap-year birthdays?
Yes. The next birthday is computed on the calendar, and Feb 29 births celebrate on Feb 29 when the year has one, Mar 1 otherwise, following the date arithmetic of the browser.