Date & time calculators
Calendar arithmetic that handles leap years and month lengths correctly, using plain calendar dates so results never shift with your time zone.
- Age CalculatorYour age is the number of complete years, then months, then days since your date of birth. The calculator counts calendar months exactly, including leap years.
- Date Difference CalculatorThe number of days between two dates is the end date minus the start date. Include the end date if you are counting both the first and the last day, as for a booking or a leave period.