Time & Date
Work out the time between two dates or times, count business days, count down to a date, convert a time between time zones, or see the time in cities worldwide, all aware of real calendar rules.
Calculate an exact age, the calendar difference or day count between two dates, add or subtract time from a date, work out elapsed shift time with an optional break, add up a list of durations, count business days, count down to a date, convert a time between time zones or between 12-hour and 24-hour notation, or convert a Unix timestamp. World City Times shows the current time in cities from 195 countries.
Working out how many days remain until a deadline, or the decimal hours worked across a shift.
Conventions and limitations
Date and duration tools each state their own counting convention explicitly (inclusive or exclusive, end-of-month clamping, and so on), since these conventions genuinely differ between tools and it matters which one applies. Business days here are Monday to Friday and do not exclude public holidays. Time zone tools use the rules in your browser, so a very recent change of law may not be reflected.
11 tools in this category
- Age CalculatorCalculate exact age in years, months and days from a date of birth.
- Date Difference CalculatorCalculate the difference between two dates in years, months and days.
- Days Between DatesCount the number of days between two dates.
- Add or Subtract DateAdd or subtract days, weeks, months or years from a date.
- Time Duration CalculatorFind the time between two dates and times, with an optional break.
- Hours CalculatorAdd up a list of hours and minutes to find the total time.
- Unix Timestamp ConverterConvert between Unix timestamps and readable dates and times.
- Time Zone ConverterConvert a date and time from one time zone to another, with clock changes handled explicitly.
- Business Days CalculatorCount the weekdays, Monday to Friday, between two dates. Public holidays are not excluded.
- Countdown CalculatorCount down the days, hours, minutes and seconds to a date and time you choose.
- Military Time ConverterConvert between 12 hour clock times and 24 hour (military) times.