Age Calculator
Enter your date of birth and see exactly how old you are today in years, months and days.
How Old Am I?
The date format depends on your browser and region settings.
If you select a custom date here, your age will be calculated for that date instead of today.
Quick Age Facts
Today
Age Highlights
How this age calculator works
This age calculator determines your exact age by comparing your date of birth with today’s date or any other date you choose in the optional field.
It accurately accounts for leap years and months with different lengths, so you can see your age in years, months, and days — and also how many days remain until your next birthday.
Typical uses
- Exactly how old am I today?
- How many days have I been alive since my birth?
- How old will I be when I retire?
- How old was I on the day of the Moon Landing?
Related Calculators
If you need to work with dates beyond your age, you may also want to calculate the number of days between two specific dates using our Days Between Dates Calculator, or find out how long it has been since an important event with the Days Since Date Calculator. To plan ahead, you can also use the Add or Subtract Date Calculator to calculate future dates, or check the weekday of a specific date with the Weekday Calculator.
These tools are often used together with the age calculator to work with dates, time spans, and calendar-based calculations.
- How many days until my next vacation?
- How many days are left until Christmas 2026?
- Calculate the number of days between two dates for a contract.
- How many days have passed since my graduation?
- How many days ago was January 1st, 2020?
- Count the days since I started my new job.
- What date is 90 days from today?
- Calculate my exact age for a visa or passport application.
- Subtract 45 days from a specific deadline.
- What day of the week was I born on?
- Was October 12, 1492 a Friday or Saturday?
- Find out the weekday for my wedding date next year.
- How many hours and minutes did I work today?
- What is the time difference between 08:30 AM and 05:45 PM?
FAQ
How does the age calculator work?
The calculator compares your date of birth with today’s date or a calculation date you choose. It accounts for months with different lengths and leap years.
What is “My age on this date (optional)” used for?
This field lets you calculate your age on a specific past or future date instead of today.
What happens if I select a date before my birth date in “My age on this date”?
If you choose a date that is earlier than your date of birth in the “My age on this date” field, the calculator will show an error. The calculation date must be the same as or later than your birth date.
Why do weeks and hours say “approx.”?
Weeks and hours are derived from the total number of days and shown as approximations for readability.