Calculate an exact calendar age in years, months, and days.
Calculate a calendar age from a date of birth and a comparison date. The result uses real month lengths and leap-year rules to show completed years, remaining months and days, rather than estimating from an average number of days per year. It also shows total elapsed days, the weekday of birth, and the next birthday. Dates are processed locally in your browser and the tool does not determine legal or medical age status.
1 January 2000 on 12 May 203232 years, 4 months, 11 daysThe calculator subtracts complete calendar years, then complete months, then the remaining days. It does not divide elapsed days by 365.25 because months have different lengths. Leap years and February 29 birthdays are handled as calendar dates.
The calculator counts completed years first, then completed calendar months, then the remaining days. Month lengths and leap years are respected.
The calculator keeps the birthday month and uses the last valid day of February in a non-leap year when calculating a calendar anniversary.
Yes. Enter any comparison date that is the same as or later than the date of birth.
No. Legal age rules vary by jurisdiction and purpose; this is a date arithmetic tool only.
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