The Date Calculator adds or subtracts days, weeks, months and years from a given date.

The Duration Calculator calculates the number of days, months and years between two dates.

The Time Duration Calculator will calculate the time that has elapsed/difference between two dates with time.

Explore our calculator & converter tools for date, time, astronomy, and more. Calculate years, months, or even seconds, or count the days to your deadline.

Days Calculator: Days Between Two Dates How many days, months, and years are there between two dates?

Find the exact time difference with the Time Zone Converter – Time Difference Calculator which converts the time difference between places and time zones all over the world.

Business Days Calculator counts the number of days between two dates, with the option of excluding weekends and public holidays.

Add or subtract any number of days to/from a date, taking into account public holidays in your country and weekends.

Welcome to the world's top site for time, time zones, and astronomy. Organize your life with free online info and tools you can rely on. No sign-up needed.

This calculator is helpful for any time-related task that crosses time zone boundaries. For example, if a project is due next Tuesday at 12:00 UTC —how far off is the deadline in your …