Birthday Countdown.
Enter your birthday and watch the countdown to your next celebration.
🎉
Happy Birthday!
Enjoy your special day!
Time until your next birthday
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Turning age
Falls on
Birthday date
Fun birthday facts.
The most common birth month in the United States is September, with September 9th being the single most common birthday. This is largely attributed to the holiday season nine months prior. The least common birthday is February 29, which only occurs during leap years.
Approximately 385,000 babies are born worldwide each day, which means roughly 267 babies share your exact birthday every minute. Despite this, the famous "Birthday Paradox" shows that in a group of just 23 people, there is a 50% chance that two of them share a birthday.
Birthday celebrations have varied dramatically across cultures and history. The ancient Egyptians were among the first to celebrate birthdays, though only for pharaohs. The tradition of birthday cakes originated in ancient Rome, while the "Happy Birthday" song was composed in 1893 by sisters Patty and Mildred Hill.
Frequently asked questions.
Quick answers to common questions about age calculation.
How does the Birthday Countdown work?
What if my birthday is today?
Does it account for leap year birthdays?
Can I see what day of the week my birthday falls on?
How do I calculate my exact age instead?
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