Calculate your exact chronological age in years, months and days. You can also see your total age in months, days, weeks, hours and minutes, find the day of the week on which you were born, and see when your next birthday will occur.
An age calculator determines the amount of time between a person's date of birth and a selected calculation date. Unlike a simple subtraction of years, an exact age calculation must take different month lengths and leap years into account.
These figures express the elapsed time between your date of birth and the selected calculation date in different units.
Find out when the next birthday will occur, how many days remain and what age will be reached.
This section identifies the day of the week that corresponds to the date of birth.
A quick summary of the dates used in this calculation.
Your chronological age is the amount of calendar time that has passed between your date of birth and another date. To calculate an exact age, the calculator first compares the years, then the months and finally the days.
For example, if someone was born on January 15, 2000 and the calculation date is March 20, 2026, the result is 26 years, 2 months and 5 days.
A simple calculation such as 2026 − 2000 = 26 only gives the difference between the calendar years. It does not tell you whether the person's birthday has already occurred in the calculation year. That is why an exact age calculator compares the complete dates.
A leap year contains 366 days instead of the usual 365. February has 29 days during a leap year. Because age is calculated using actual calendar dates, leap years can affect the number of days between two dates.
The calculator therefore works with calendar dates instead of assuming that every year contains exactly the same number of days.
The total months value represents the completed years converted into months plus the remaining months. Total days represents the actual number of complete 24-hour calendar periods between the selected dates.
Weeks, hours and minutes are derived from the total number of days. These values are therefore useful approximations rather than a replacement for the calendar-based years, months and days result.
Suppose the date of birth is 15 January 2000 and the calculation date is 20 March 2026.
The person's chronological age is 26 years, 2 months and 5 days. The exact total number of days is calculated from the two calendar dates rather than by multiplying the age by an assumed number of days per year.
An age calculator can be useful whenever you need to determine someone's age on a particular date rather than simply knowing their birth year.
Legal age requirements can vary depending on the country, jurisdiction, institution and purpose. This calculator provides a chronological age based on the dates entered; it does not determine legal eligibility for voting, employment, driving, contracts, benefits or other regulated activities.
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