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Free age calculator. Enter a date of birth to get exact age in years, months, and days, plus total days and next birthday.
Defaults to today
Age is computed from calendar dates in UTC day units: whole years, then months, then remaining days. You also get total days/weeks/months and days until the next birthday.
Enter your birth date (and optional “as of” date). The tool returns years, months, and days between the dates.
Yes. February 29 birthdays are handled carefully on non-leap years for next-birthday math.
Yes. Set “Age as of” to any valid date on or after the birth date.
No. It is a convenience calculator, not an official document.