World Clock
Track time across the globe
Add cities, compare times, and convert between zones instantly.
World Clock
(6/8)Prague
Czech Republic
London
United Kingdom
New York
United States
Los Angeles
United States
Tokyo
Japan
Sydney
Australia
Time Converter
Enter a time to see it converted to other zones
Why I Keep a World Clock Open
I work with people in London, San Francisco, and Sydney. For years I did timezone math in my head and got it wrong constantly - scheduling calls at 3am for someone without realizing it. Embarrassing. Now I just glance at this.
You can pin up to 8 cities, see which ones are in the middle of the night (so you know not to message them), and convert any time across all zones at once. Saves me about 10 awkward "sorry, what time works for you again?" emails per week.
What This Clock Does
Track Multiple Cities
I keep New York, London, Tokyo, and my home city pinned. You can add up to 8.
Convert Any Time
Type "3pm" and see what that means in every city you've added. Handy for scheduling.
Day/Night at a Glance
Moon icon means "don't send that Slack message right now." Simple but useful.
Hours Ahead/Behind
Shows +5h or -8h relative to your home zone. No mental math required.
How to Use
Add Timezones
Click "Add timezone" and search for a city or browse by continent.
Set Your Home
Hover over any clock card and click the home icon to set it as your reference.
Convert Times
Use the time converter to see what time a meeting would be in each city.
Customize Display
Click the settings gear to toggle 24-hour format, seconds, and date display.
Popular Time Zone Comparisons
New York to London
London is typically 5 hours ahead of New York (EST to GMT).
LA to Tokyo
Tokyo is 17 hours ahead of Los Angeles (PST to JST).
London to Sydney
Sydney is 10-11 hours ahead of London depending on DST.