Tools for time zones and calendars
Working with people in other countries, planning travel or counting down to a big day? These tools answer everyday date and time questions instantly, with daylight saving time handled for you.
Which tool do I need?
| I want to… | Use |
|---|---|
| Convert a time to another city | Time Zone Converter |
| See the time in several cities now | World Clock |
| Find a meeting time across time zones | Meeting Planner |
| Find what day a date falls on | Day of the Week Calculator |
| Find the current week number | Week Number |
| Count down to a holiday or event | Holiday Countdown |
| Check whether a year is a leap year | Leap Year Checker |
More date tools
In the calculators section: age calculator, date difference, add days to a date, working days, time duration and countdown timer. See also the Unix timestamp converter and the Islamic tools for Hijri dates.
About time zones
There are more than 400 time-zone regions in use, because countries set their own offsets and daylight saving rules. These tools use your browser's built-in time-zone database (the same IANA database used by computers and phones worldwide), so they stay correct when rules change.