Age Calculator
Enter your date of birth to see your exact age in years, months and days — with total days lived, a countdown to your next birthday and the weekday you were born.
Enter your date of birth to see your exact age.
Your age is
Calculated in your browser — your date of birth is never sent or stored.
How to use the Age Calculator
Enter date of birth
Pick or type your date of birth. You can also calculate age for someone else.
Choose “age on” date
Leave it as today, or pick any date — useful for job forms and admissions.
See results
Your exact age, totals in months, weeks, days and hours, and your next birthday appear instantly.
Why use our Age Calculator?
Exact to the day
Handles leap years and different month lengths correctly.
Age on any date
Check age on a past or future date — perfect for job applications and exam eligibility.
Next birthday countdown
See how many months and days are left until your next birthday.
Birth weekday
Find out which day of the week you were born on.
Zodiac sign
Your western zodiac sign and Chinese zodiac animal.
Shareable link
Copy a link with the dates filled in to share the result.
Frequently asked questions
Everything you need to know about the Age Calculator.
Back to the toolHow is age calculated?
Age is counted in full years since your birth date, then the remaining full months, then the remaining days. For example, from 15 March 2000 to 10 May 2026 is 26 years, 1 month and 25 days.
Can I calculate age on a specific date?
Yes. Change the “Age on” date to any past or future date. This is useful for government job ads, school admissions and visa forms that ask for your age on a cut-off date.
How are leap-year birthdays (29 February) handled?
In non-leap years, a 29 February birthday is treated as 28 February, which is the common legal convention.
Is my date of birth saved?
No. The calculation happens in your browser and nothing is sent to our server.
How many days old am I?
The “Total days” card shows exactly how many days you have lived, along with totals in weeks, hours and minutes.
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