Calculate your exact age in years, months and days, see your total days lived, and count down to your next birthday. Everything runs instantly in your browser.
Calendar-aware calculations account for month lengths and leap years.
See the exact number of days remaining until your next birthday.
Your dates never leave your device. No account or uploads required.
This free online age calculator measures the time between your date of birth and a date you choose. Use today to find your current age, or select a past or future date to learn how old you were—or will be—on that day.
Your exact age is the calendar difference between your birth date and the selected calculation date. Unlike a simple division of total days by 365, this calculator works with real calendar years and months. That matters because months contain 28, 29, 30 or 31 days, and leap years contain an extra day.
The calculator first counts complete years, then complete months after your last birthday anniversary, and finally the remaining days. The result is an easy-to-read calendar age rather than a rounded estimate.
You also receive your approximate age in completed months, the total number of calendar days lived, your birth weekday, zodiac sign, and the number of days until your next birthday.
Need an age for a form, application, milestone or historical record? Change “Calculate age on” to the relevant date. The selected date must be the same as or later than the birth date.
Leap years are handled automatically. For a February 29 birth date, the birthday countdown uses February 28 in non-leap years, while the age calculation continues to follow actual calendar dates.
Quick answers to common questions about calculating age, birthdays and date privacy.
Enter your date of birth and the date on which you want to know your age. The calculator subtracts the dates using complete calendar years, months and days.
Yes. It uses actual calendar dates, including February 29, different month lengths and leap years, so the result is more precise than dividing days by 365.
Yes. Select any calculation date on or after your date of birth to find your age on that specific day.
No. Your age is calculated locally in your browser. This tool does not upload or save the birth date or calculation date you enter.
It shows exact age in years, months and days, total days lived, completed months, birth weekday, zodiac sign, and the countdown to the next birthday.