Age calculator
Age calculator and birthday countdown
Find out exactly how old you are — in years, months and days — and how many days are left until your next birthday. Nothing you enter leaves your browser.
Want a live birthday timer?
Make a birthday countdown that ticks down to the second and share the link with friends. To count the days between any two dates, use the days between dates calculator.
Questions
How old am I exactly?
Enter your date of birth above. The calculator counts whole years, then whole months, then the days left over, which is how age is normally stated — for example 25 years, 3 months and 12 days.
How many days until my birthday?
The birthday box under your age shows the number of days until your next birthday, the date it falls on and the age you will turn.
How many days old am I?
The total days row counts every calendar day from your birth date to today, including leap days.
What day of the week was I born?
It is shown in the last row of the results, worked out from the same calendar the rest of the calculator uses.
What if my birthday is on 29 February?
In years without a 29 February, the calculator treats 28 February as your birthday, which is the most common convention.
Can I work out someone's age on a different date?
Yes. Change the “Age on” date to any day in the past or future, such as a wedding, a graduation or a retirement date.