World Clock & Time Zone Converter

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See the current time in cities around the world and convert any time between time zones instantly. Free and runs in your browser.

Everything runs in your browser — your cities are saved locally and nothing is sent anywhere.

World clock
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No cities yet. Add one above to start tracking time around the world.
Time zone converter

Enter a date and time in a source zone, then see that exact moment in every city above.

The converted time appears on each city card above.

About World Clock & Time Zone Converter

The world clock shows the current time in cities around the globe on a board you build yourself. Add the cities you care about, choose 12- or 24-hour format, and each card shows its live local time with a day or night indicator; one click adds your own time zone.

A built-in time zone converter completes the picture: enter a date and time in any source zone and that exact moment appears on every city card — the fast way to schedule a meeting across offices or check when a launch happens locally.

Your city list is saved locally in your browser, so the board is exactly as you left it next visit. Nothing is sent anywhere, and it is free.

How to use World Clock & Time Zone Converter

  1. Add a city from the picker — repeat for every place you want to track.
  2. Use “Use my time zone” to pin your own local time to the board.
  3. Switch between 24h and 12h display formats.
  4. To convert a time, choose a source zone and a date & time, then press Convert.
  5. Read the converted moment on each city card above.

Frequently asked questions

Add every participant's city, then use the converter: enter your proposed time in your zone and press Convert. Each card shows that exact moment locally, so overlaps and bad hours are obvious at a glance.

Yes — times come from each city's IANA time zone through your browser's locale engine, which applies DST rules automatically, including zones that skip DST entirely.

Yes, in your browser's local storage on this device. The board reloads exactly as you left it; clearing site data or switching browsers starts a fresh board.

Each card marks whether it is currently daytime or night-time in that city — a quick visual cue for whether a call would land at a reasonable local hour.

Yes — every card has a Remove control, and since duplicates are blocked, the board stays tidy however you rearrange your set of cities.
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