Birthday Countdown Calculator 2026 — Days Until Your Birthday

Calculate your exact age using our free online Age Calculator. Enter your date of birth and today's date to instantly get your age in years, months, weeks, and days. Whether you need your age in months for a medical form, the exact number of days until your next birthday, or a countdown timer, this tool covers it all. Perfect for filling in forms that ask for your age in different units. No sign-up required — fully browser-based and works on any device instantly.

Frequently Asked Questions

How many days until my next birthday?

To find days until your birthday, subtract today's date from your next birthday date. If your birthday has already passed this year, count to next year's date. Our birthday countdown calculator handles this automatically and updates in real time, showing days, hours, minutes, and seconds remaining.

What day of the week will my birthday fall on?

The day of the week for any birthday shifts by 1 day each regular year and 2 days after a leap year. Enter your birth date in our calculator to see the exact day of the week your next birthday falls on, plus a countdown to the moment it arrives.

Can I count down to someone else's birthday?

Yes — simply enter any person's birth date and the calculator shows a live countdown to their next birthday. This is useful for planning surprise parties, sending early wishes, or tracking multiple birthdays throughout the year. Bookmark the page or note the exact date from the results.

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