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Date & Time
Dates, Time Zones, Timers & More
Add or Subtract Days from a DateFind the date after adding or subtracting days.Add Years, Months and Days to a DateAdd or subtract years, months and days.Days Until a DateHow many days are left until a date.Business Days CalculatorCount working days (Mon-Fri) between two dates.Add Business Days to a DateFind the date after a number of working days.Week Number CalculatorISO week number of any date.Day of the Week CalculatorFind which weekday any date falls on.Leap Year CheckerCheck if a year is a leap year.Days in a Month CalculatorNumber of days in any month and year.Time Duration CalculatorHours and minutes between two times.Work Hours CalculatorDaily hours worked with break time.Add Time CalculatorAdd several durations such as 1:30 and 0:45.Age in Days CalculatorYour age in days, weeks, hours and minutes.Birthday CountdownDays left until your next birthday.Zodiac Sign CalculatorFind your western zodiac sign from your birth date.Chinese Zodiac CalculatorFind your Chinese zodiac animal by birth year.Life in Weeks CalculatorHow many weeks you have lived and may have left.Seconds to Hours, Minutes and SecondsConvert seconds to HH:MM:SS and back.Julian Date ConverterConvert a calendar date to Julian day number.Time Zone ConverterConvert a time from one city time zone to another.World ClockCurrent time in major cities around the world.Date Format ConverterShow a date in many formats.Anniversary CalculatorTime together since your anniversary or start date.Monthly Calendar GeneratorPrint a text calendar for any month.Countdown TimerSet a timer with an alarm sound when it ends.Online StopwatchStopwatch with lap times.Pomodoro TimerFocus and break timer to boost productivity.