Age calculator. Calculate your exact age in years, months, and days from your birthdate. Find out how many days old you are, when your next birthday is, and more.
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Want to know your precise age down to the day? Here's how:
Beyond your basic age, the calculator shows:
The calculator accounts for varying month lengths and leap years. It calculates the difference between your birth date and today, then breaks it down into complete years, remaining months, and remaining days — exactly as a human would count.
Yes! The calculator handles leap year birthdays correctly. If you were born on Feb 29th, it will show your correct age even in non-leap years.
Absolutely! Just enter any valid birth date. This is useful for filling out forms, checking eligibility requirements, or simply satisfying curiosity.
No. All calculations happen directly in your browser using JavaScript. Your birth date never leaves your device — nothing is sent to any server, stored, or tracked.
The calculation is mathematically precise, accounting for the actual number of days in each month and leap years. The only limitation is that it uses the current system date, so make sure your device's date and time settings are correct.