How many days until my birthday, and exactly how old am I? Enter your date of birth and this free calculator shows your age in years, months and days, how many days you have lived, the weekday you were born on and a live countdown to your next birthday.
How to Use the Birthday Countdown & Age Calculator
- Pick your date of birth in the date box (day, month and year).
- Tap “Calculate”. Your exact age, total days lived and birth weekday appear at once.
- Watch the countdown to your next birthday tick down in days, hours, minutes and seconds. Keep the page open on the big day to see your birthday message.
How the Calculation Works
Your age is counted in full calendar years, then the extra months, then the remaining days, the same way you would count on a calendar. The countdown uses your device’s clock and time zone, so it reaches zero at midnight where you are. Total hours lived is an estimate because the exact time of birth is not included.
If you were born on 29 February, the calculator counts your birthday on 28 February in years without a leap day.
Why People Use an Age Calculator
An exact age is handy for more than birthdays. People use it to fill in forms that ask for age in years and months, to check school admission age for children, to count the days to a milestone birthday such as 18, 30 or 50, or simply to share a fun fact like “I have lived 10,000 days today”. Parents also like to track a baby’s age in months and days during the first year.
Examples
- Born 10 May 2000: on 17 October 2026 you are 26 years, 5 months and 7 days old, and your next birthday is on a Monday, 10 May 2027.
- Born 1 January 1990: on 17 October 2026 you are 36 years, 9 months and 16 days old.
- Born 29 February 2004: the countdown points to 28 February in non-leap years and 29 February in leap years.
Ideas for Your Birthday Countdown
- Share the countdown with family so they remember the date.
- Plan one small thing for each of the last seven days, such as a favourite meal or a call with an old friend.
- Write your birthday wish list or dua list before the day arrives.
- When the day comes, send yourself a card made with our free Birthday Card Maker
- Find out your zodiac personality with the Zodiac Birthday Personality Test and your Islamic birthday with the Hijri Birthday Finder.
Birthday Wishes for Every Relationship
Counting down to someone else’s birthday? Get the words ready in advance:
- Birthday wishes for best friend
- Birthday wishes for wife
- Birthday wishes for husband
- Happy birthday wishes for mom
- Birthday wishes for son from mother
- Belated birthday wishes for her
Frequently Asked Questions
How many days until my birthday?
Enter your date of birth above and tap Calculate. The tool shows the exact number of days, hours, minutes and seconds left until your next birthday, based on your device’s time zone.
How do I calculate my exact age?
Count the full years since your birth date, then the extra months, then the remaining days. The calculator does this automatically and also shows the total number of days you have lived.
What day of the week was I born?
The calculator shows the weekday of your birth as soon as you enter your date of birth.
How are 29 February birthdays handled?
In years without 29 February, the calculator counts the birthday on 28 February.
Is my date of birth saved?
No. Everything is calculated inside your browser and nothing is sent to our server.