Dates & age calculator
Age calculator
Calculate the elapsed age from a date of birth to a selected date.
Formula and example
Age is counted using completed calendar years, then remaining months and days. February 29 birthdays use February 28 in non-leap years.
Worked example
Enter a date of birth and the date to calculate age on. The result counts full calendar years, months and days.
Assumptions and limits
Calendar month lengths and leap years are used. This is a calendar age, not a count of hours lived.
Privacy
Values are processed in your browser and are not sent to Earnwell Atlas. Your host may still record standard visit logs.