Age Calculator
Calculate your exact age in years, months, days, hours, and seconds. Includes zodiac signs and birthday countdown.
How It Works
- Enter your birth date. Pick your birth date using the date picker. This is the only required field.
- Add your birth time (optional). Enter the time of day you were born for age down to the second, or leave it blank to count from midnight.
- See your exact age. The calculator instantly shows your age in years, months, days, hours, minutes, and seconds, updating live.
- Check zodiac and next birthday. Review your Western and Chinese zodiac signs and see how many days remain until your next birthday.
Frequently Asked Questions
How accurate is the age calculator?
It calculates your exact age down to the second and updates in real time. It accounts for leap years and varying month lengths, so the result matches what a calendar would show.
What zodiac signs does it show?
It shows both your Western zodiac sign (based on birth date) and your Chinese zodiac animal (based on birth year), so you get two perspectives from one entry.
Does it store my birthday?
No. All calculations happen in your browser. Your birthday is never sent to a server and is cleared as soon as you close the page.
How is age calculated across months with different lengths?
The calculator breaks the time between your birth date and today into years, months, and days using calendar arithmetic. If today's day is earlier in the month than your birth day, it borrows from the previous month just like manual counting.
Can I calculate the age of something other than a person?
Yes. Enter any start date such as a company founding, product launch, or pet's birth date and the calculator shows the elapsed time in years, months, days, and seconds.
Is the age calculator free to use?
Yes, completely free with no sign-up. Everything runs locally in your browser, so it works even on private dates you would rather not share online.