Age Calculator
Know your exact age down to the day. Enter your date of birth and see your age in years, months and days — plus totals in weeks, days, hours and minutes, and how long is left until your next birthday.
How to Calculate Your Age
Exact age in three steps — including the days most calculators skip.
1. Enter your date of birth
Pick the day you were born from the calendar field.
2. Check the "age at" date
It is set to today automatically. Change it to any past or future date — a wedding day, a retirement date, a form's cut-off date.
3. Press Calculate Age
Your exact age appears at once: years, months and days, every total, and your next-birthday countdown.
Why Use Our Age Calculator?
Simple, fast, and completely private tools designed for everyday use.
Exact to the Day
Not just years: your age is broken down into years, months and days, counted correctly across leap years.
Every Unit You Need
Total months, weeks, days, hours, minutes and seconds — handy for forms, records and fun comparisons.
Next Birthday Countdown
Instantly see the date of your next birthday and exactly how many days are left until it.
Any Date, Past or Future
Work out your age on any date you choose, not just today — useful for eligibility checks and planning.
Common Questions About Age Calculation
The calculator counts full years first, then full months, then the remaining days between your date of birth and the date you select. Leap years are counted automatically, so the day total is exact.
Yes. The second date field (“Age at the Date of”) starts at today, but you can set it to any date — for example, to check whether you meet an age requirement on a specific deadline.
Many official forms, records and eligibility rules count age in days or ask for totals in months and weeks. This tool shows all of them at once so you do not have to convert by hand.
The calculator handles leap-day birthdays correctly. In years without a 29 February, your birthday countdown uses 28 February, and your completed years still increase at the right time.
No. Everything runs in your browser on your own device. Your dates are never uploaded, saved or shared.
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Ready to try it?
Calculate your exact age in years, months, and days in seconds. 100% free and client-side private.