Date and Time Tools
Calculate with dates, convert between calendars and compare time zones without a spreadsheet.
- Age CalculatorFind out exactly how old you are, or how old someone was on any date.
- Date Difference CalculatorCalculate how much time lies between any two dates.
- Add or Subtract Days from a DateFind the date that is a number of days, months or years before or after another date.
- Business Days CalculatorCount the working days between two dates.
- Days Until CalculatorSee how long you have to wait for a date.
- Day of the Week CalculatorFind out which weekday a date falls on.
- Unix Timestamp ConverterTranslate between Unix epoch time and human-readable dates.
- Persian, Gregorian and Hijri Date ConverterConvert any date between the Solar Hijri (Persian), Gregorian and Islamic lunar calendars.
- Time Zone ConverterFind out what time it is elsewhere when it is a given time in your city.
- Time Unit ConverterConvert any duration into other units of time.
- Time Duration CalculatorAdd or subtract lengths of time such as 2h 45m and 1h 30m.
- World ClockSee the current time in major cities, updated every second.