World Clock
Free online world clock. Check current time in multiple cities and time zones worldwide with live updating, DST awareness, and 12h/24h format.
About This Free Online World Clock
Our free online world clock displays the current time in multiple cities and time zones simultaneously. Add as many locations as you need from a comprehensive list of major world cities. Each clock tile updates in real-time with the current time, date, and timezone offset. Perfect for remote teams, international travel planning, and staying connected with friends and family around the world.
Features of Our World Clock
- Display current time in multiple cities simultaneously
- Add/remove locations from a world city list
- Automatic DST (Daylight Saving Time) adjustment
- 12-hour and 24-hour format toggle
- Real-time updates every second
- 100% private — browser-only processing
How to Use the World Clock
The World Clock works right in your browser — no signup, no installation. Follow these steps:
- Search and add cities from the list to display their current time.
- Toggle between 12-hour and 24-hour time format.
- View all selected city times updating in real time.
- Remove cities you no longer need with the Remove button.
Frequently Asked Questions About World Clock
How accurate is the world clock?
The world clock uses your device's system clock combined with timezone offset data. Accuracy depends on your device's time synchronization. Most modern devices sync via NTP and are accurate to within milliseconds.
Does this account for Daylight Saving Time?
Yes. DST transitions are handled automatically based on the IANA timezone database offsets. Clocks update correctly when cities enter or leave DST.
How many cities can I add?
You can add as many cities as you like. Each clock tile updates independently.
Why Choose the World Clock?
The World Clock gives you exact dates and durations without manual counting. It calculates instantly in your browser, accounts for the cases people actually need, and keeps whatever you enter on your own device.