Age and date calculator
Calculate age on a chosen date, or find the full days and weeks between two dates.
Choose both dates to calculate age.
Age uses calendar years and months; date differences count full days and do not include both endpoints.
Calculate age on any date
Enter a date of birth and a calculation date to see completed calendar years, months, and days, plus the total number of days between the dates. You can use a past or future calculation date as long as it is not before the date of birth.
Find the days between dates
The date difference mode counts full calendar days between the selected dates and reports the result in weeks and remaining days. It does not count both the start and end dates as full days.
Also try the percentage calculator or browse all free tools.