Calculate exact age from date of birth
The Daily Print Project has a free age calculator by date of birth for exact age, how old am I today, age on a future date, age on a past date, total days, total weeks, and next birthday.
It is useful for forms, school cutoffs, birthday planning, family history notes, appointment records, and any planning task where a rough year count is not enough.
How old am I?
Enter date of birth and leave the age-on date as today.
Age on a future date
Check a birthday, school date, appointment, or trip date.
Total days and weeks
Use the result when a record needs more than years and months.
Next birthday
See how many days remain until the next birthday.
Age calculator workflow
- Enter the date of birth in year-month-day format.
- Use today's date or choose a specific age-on date.
- Read exact age in years, months, and days.
- Use total days or weeks when a form or record needs that detail.
- Save important dates in a calendar, planner, or family history printable.
Calendar age uses real dates, so month lengths and leap years are included in the result.
Related calculator, calendar, and planner resources
Age calculator by date of birthExact age, total days, total weeks, and next birthday.
Free online calculatorQuick arithmetic for everyday date and planning math.
2026 printable calendarMark birthdays, appointments, and age-related dates.
Daily to-do list printableTrack paperwork, appointment, and birthday tasks.
Habit tracker printableUseful for age-related goals and routines.
Family tree chart printableOrganize birth dates and family history notes.