Birthday Age Calculator

Find your exact age from your birthday and see the countdown to your next birthday.

Enter Your Birthday

Leave blank to calculate from your birthday to today.

Birthday Age and Countdown

The birthday age calculator converts a birthday into an exact age today or on a selected date.

It also shows birthday details that are useful for profiles, invitations, milestones, and quick personal date checks.

Birthday Details Included

  • Exact birthday age: Years, months, and days from the birthday to today or your chosen date.
  • Next birthday: The next birthday date and the number of days remaining.
  • Birth weekday: The day of the week the birthday fell on.
  • Zodiac signs: Western and Chinese zodiac signs from the birthday.

100% Private

Birthday calculations are performed client-side, so your birthday is not uploaded or stored.

Popular Age Calculators

Age Calculator by Date Calculate exact age on any past or future date. Birthday Age Calculator Find birthday age, next birthday, and date facts. Exact Age Calculator Get years, months, days, hours, and minutes. Age Between Two Dates Compare two dates with a date difference calculator. Date Difference Calculator Find the exact duration between any two dates.

Frequently Asked Questions

How do I calculate age from my birthday?
Enter your birthday and select Calculate Birthday Age. The calculator shows exact age in years, months, and days plus total time units.
Can I calculate age on a birthday in another year?
Yes. Add a comparison date to calculate age on that specific day.
Does the calculator show my next birthday?
Yes. It shows the next birthday date and how many days remain from the selected comparison date.
Is my birthday private?
Yes. The birthday is processed in your browser only.

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