Chronological Age Calculator: Calculate Your Exact Age
Learn what chronological age means and how to calculate your age in years, months, and days.
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Age Calculator
Type your date of birth or pick it from the calendar. Add your birth time for an even more exact result.
No registration required
Secure & private
Works on any device
Type date of birth
or
Birth time (optional)
0Years
0Months
0Days
0Hours
0Minutes
Total months
Total weeks
Total days
Total hours
Born on a
Next birthday
100% Private
Your dates are calculated in your browser — nothing is sent anywhere.
Instant
Results appear the moment you press Calculate.
Free & Unlimited
No account and no limits on how often you use it.
How to calculate your age
Three quick steps. Nothing to install and nothing leaves your device.
1
Enter your birth date
Type the day, month and year, or pick the date from the calendar. Add a birth time if you know it.
2
Choose the end date
Leave it on today with "Till now", or pick any other date to find the age on that day.
3
Calculate
See your age in years, months and days, plus totals in weeks, days and hours.
Learn about Age
Helpful guides about age calculation, dates and calendars.
Frequently asked questions
Quick answers about the ConvertKit Lite Age Calculator.
Is my date of birth stored or sent anywhere?
No. The calculation runs entirely in your browser, so your date of birth is not uploaded to a server.
Do I have to enter my birth time?
No, it is optional. Add it if you want your age in hours and minutes as well.
Can I find my age on a past or future date?
Yes. Change the "Calculate age until" date to any day after your birth date.
How are leap years handled?
The calculator uses real calendar dates, so leap years and different month lengths are taken into account.
Why does the time zone matter?
Results use your device's local date and time. If you were born in another time zone, hours and minutes may differ slightly.