How to use
Enter the date of birth and the reference date. Read the calendar age and elapsed days.
Calculation method
Years + Months + DaysExample
2000-02-29 → 2025-02-28 = 25 / 0 / 0
Questions
What should I check?
Dates use the Gregorian calendar, 1900–2100. A month-end anniversary is clamped to that month’s final day.