The oXben Age Calculator tells you your exact age in years, months, days, hours, and minutes — instantly. Enter your date of birth and the tool calculates how long you have been alive down to the minute. It also shows your next birthday countdown, the day of the week you were born, your Western and Chinese zodiac signs, your generation label, and your age on every planet in the solar system.
The Date Difference section lets you measure the gap between any two calendar dates — useful for project planning, event countdowns, or historical research. All calculations run entirely in your browser; no data is sent to any server.
Is this age calculator accurate?
Yes. It calculates age using your local system clock, accounting for leap years, varying month lengths, and day-of-month offsets. The result matches civil age in all common jurisdictions.
Does it store my birth date?
No. The calculation runs only in your browser and the date is never transmitted or stored anywhere.
What zodiac systems does it support?
The tool shows both your Western (tropical) zodiac sign based on your birth month and day, and your Chinese zodiac animal based on your birth year in the 12-year cycle.
What generation am I?
Generation labels (such as Gen Z, Millennial, Gen X, or Baby Boomer) are assigned based on widely used birth-year ranges. The tool shows your generation label automatically once you enter your date of birth.
How is age calculated on other planets?
Each planet’s age is calculated by dividing the number of Earth days you have lived by the orbital period of that planet in Earth days. For example, on Mercury — which orbits the Sun in 88 Earth days — you would be much older than your Earth age.