📅 Date & Time
Age, date difference, working days, time zones, countdowns and calendar helpers.
📅
Add or Subtract Days from DateAdd or subtract days, weeks, months and years from any date.📅
Age CalculatorCalculate your exact age in years, months and days, with next birthday and total days lived.📅
Business Days CalculatorCount working days between two dates, excluding weekends and holidays.📅
Countdown TimerLive countdown to any date and time - birthdays, exams, launches or festivals.📅
Date Difference CalculatorFind the exact difference between two dates in years, months, weeks and days.📅
Date to Day FinderFind the day of the week for any date in history or the future.📅
Days Between Dates CalculatorCount days, weekdays, weekends and weeks between any two dates.📅
Leap Year CheckerCheck whether a year is a leap year and find nearby leap years.📅
Time Difference CalculatorFind the difference between two times, with date change handling.📅
Time Duration CalculatorAdd up several time durations in hours and minutes.📅
Time Zone ConverterConvert a date and time from one time zone to another.📅
Unix Timestamp ConverterConvert Unix timestamps to dates and dates to timestamps.📅
Week Number CalculatorFind the ISO week number of any date and the week start and end.📅
Working Days CalculatorFind the date after a number of working days from a start date.📅
World ClockLive clocks for major cities around the world.About Date & Time tools
This section has 15 free tools including Add or Subtract Days from Date, Age Calculator, Business Days Calculator, Countdown Timer, Date Difference Calculator, Date to Day Finder and more. Every tool opens on its own page with a working calculator, clear explanation, formula, worked example and frequently asked questions. All results update instantly in your browser and can be exported as a snapshot image.
Date calculations use the Gregorian calendar. Public holidays vary by region; add your own holidays where the tool allows it.