How many days until my birthday?
The counter above shows the exact time left until your next birthday — days, hours, minutes and seconds, updating live — from the date of birth you enter. When your birthday passes, it rolls forward to the following year automatically, so it's always counting down to the next one. It also shows how far through your current 'birthday year' you are, which is a fun way to see the day sneak up.
How do you calculate someone's exact age?
Exact age isn't just this year minus your birth year. You have to check whether your birthday has already happened this year: if today is before it, you're still the younger age. The precise way is to count the full years since birth, then the extra months and days on top — which is what this tool does, giving you an age like '34 years, 2 months and 9 days' rather than a rounded number.
What about a leap-year (February 29) birthday?
People born on 29 February only get a 'real' birthday every four years. In common years the birthday is usually observed on 28 February or 1 March, and that's how age is counted legally in most places. The calculator handles the Feb 29 edge case so a leapling's age and countdown stay correct in non-leap years instead of skipping or breaking.
Why a countdown instead of just an age?
A plain age is a static number; a live countdown turns your next birthday into something you can watch approach, which is why it's popular for planning parties and surprises or just for the fun of it. Seeing '58 days, 4 hours' left makes the date concrete. Bookmark it and it keeps running — the target advances every year with no input from you.
Ages and countdowns are computed from the date of birth you enter, in your local time zone. February 29 birthdays are observed on the standard non-leap-year date.
Frequently asked questions
How many days until my birthday?
Enter your date of birth above and the counter shows the exact days, hours, minutes and seconds until your next birthday, live.
How do I calculate my exact age?
Count the full years since you were born, checking whether this year's birthday has passed yet, then add the leftover months and days. The tool shows it as years, months and days.
What is my age if my birthday hasn't happened yet this year?
One year less than this year minus your birth year. If you were born in 1990 and your birthday is still ahead in 2026, you're 35, not 36, until the day arrives.
When do people born on February 29 celebrate?
Usually on 28 February or 1 March in non-leap years; their legal age advances on that observed date. The calculator accounts for this so the age stays right.
Does the countdown reset each year?
Yes — once your birthday passes it automatically counts down to next year's, so a bookmark always shows time until your next birthday.