Time Zone Converter
Compare cities and find a meeting time that works for everyone. Free
Add another city to find shared working hours.
Cities
About the Time Zone Converter
Whisser Time Zone Converter is a world clock and meeting planner in one. Add the cities you work with, drag the slider to any time and every city shows that same moment in its local time. A 24-hour bar for each city highlights working hours, so you can spot the hours that suit everyone and copy the meeting time straight into an invitation or chat.
How to use
- Search for a city, country, time zone or abbreviation and press Enter to add it.
- Drag the time slider or pick a date. The first city is the reference, and every other city converts automatically.
- Look for columns that are green in every row, or use Best overlap to jump to the longest shared working window.
- Drag the handle to reorder cities, switch between 12-hour and 24-hour clocks, and click Copy time to share.
Frequently asked questions
How do I convert a time to another time zone?
Add the cities you need, then drag the time slider or pick a date. Every city instantly shows the same moment in its own local time, along with its date and UTC offset. Click Now to go back to the live clock.
Does the converter handle daylight saving time?
Yes. It uses the IANA time zone database built into your browser, so offsets switch automatically for summer and winter time on the exact date you choose, including half-hour zones such as India and Newfoundland.
How do I find a good meeting time across time zones?
Each city has a 24-hour bar where green marks working hours from 9 AM to 5 PM. Hours that are green for everyone get an outline, and the Best overlap note tells you the longest shared window. Click any hour to select it.
Which time zone is the reference?
The first city in the list is the reference: the slider, date and hour bars follow its local time. Drag another city to the top, or use its move up button, to make it the reference.
Can I add any city or time zone?
Yes. Search around 100 popular cities, every IANA time zone your browser supports, country names and common abbreviations such as PST, GMT, CET or IST.
Is it free, and is my city list saved?
It is free and needs no account. Your cities and clock format are saved only in this browser's local storage, and nothing is sent to a server.