Find your exact age in years, months, and days. Compare two birth dates, count down to your next birthday, and see total days lived.
One birth date gives years, months, days, and lifetime totals in days, hours, minutes, and seconds.
See the date of your next birthday and exactly how many days away it is.
Real month lengths and leap-year rules, not rough 30-day months or a fixed 365-day year.
Now with the Age Difference tab — compare two birth dates and see exactly who is older and by how much.
All calculations happen in your browser — nothing is saved.
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Switch to the Age Difference tab and enter both birth dates, with optional names. The calculator returns the span in years, months, and days, the total days between the dates, and which person is older.
Calendar months have different lengths, so counting months directly is more accurate than multiplying years. A birthday on January 31 also has no February 31 to reach, which simple multiplication ignores.
No. The calculator runs entirely in your browser. Nothing is uploaded, saved, or sent to a server.
Free online age calculator that works out your exact age in years, months, and days from any birth date. Compare two dates, check days until your next birthday, and more.
Free age calculator online: find your exact age in years, months, and days right in your browser. Compare two birth dates and see days until your next birthday.
Enter a date of birth and get an exact age in years, months, and days, plus your age on any cutoff date. Free age calculator, no sign-up, instant results.
Looking for the Cornell age calculator? This free browser tool returns the same exact age in years, months, and days, with a two-date mode and no sign-up.