Calendar Tools
Inspect weeks, weekdays, leap years, calendars and recurring date patterns.
8 tools
Open a calculator to view its method, result classification and limitations.
Day of the Week CalculatorFind what day of the week any date falls on.Week Number CalculatorISO 8601 week number for any date.Day of the YearFind the day number of the year for any date.Days Remaining in YearHow many days are left in the current year.Leap Year CheckerCheck if a year is a leap year, plus nearby leap years.Nth Weekday CalculatorFind, for example, the third Monday or last Friday of any month.First and Last DayFind the first and last day of a week, month, quarter, or year.Calendar GeneratorPrintable monthly or yearly calendar.