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World Clock online

Live time zones at a glance — analog & digital, fully customisable.

World Clock logo
by
CHUNKY
MUNSTER
// 9 clocks shown  ·  click a city name to change it

✎ Change City / Time Zone

How to Use the World Clock

  1. Paste or enter your input into the text field.
  2. Configure any options (format, delimiter, encoding, or mode) using the controls above the output.
  3. The result updates instantly — no submit button required for most operations.
  4. Click Copy or Download to take the output to your next step.

See the current time in up to nine cities or time zones at once — useful for distributed teams, travel planning, or coordinating with family abroad. Each clock shows both an analog face and a digital readout; click any city name to swap it for one of 100+ cities or any IANA time zone.

How the World Clock Works

Time conversion uses the browser’s built-in Intl.DateTimeFormat API, which understands IANA tz data and automatically handles daylight-saving transitions for every region. Choose 12h or 24h display per clock, and the layout reflows from a 3-column grid down to single-column on phones. Your selection is saved in browser storage so it persists between visits.

Frequently Asked Questions

How are the times kept accurate?

Every clock updates once per second from your local system clock, then converts to the target time zone using the browser’s Intl.DateTimeFormat API — the same engine browsers use internally. As long as your machine’s clock is synced, the displayed times are accurate.

Are daylight-saving transitions handled?

Yes. Because the conversion uses IANA tz data baked into the browser, DST starts and ends are applied automatically. London will swap GMT ↔ BST and New York will swap EST ↔ EDT on the right dates without any manual update.

Can I add cities that aren’t in the list?

Click any clock’s city name to open the picker. It includes 100+ cities grouped by region; if your city isn’t listed, pick any city in the same IANA time zone (the actual time will be identical).

Does the clock work offline?

Yes — once the page is loaded, no network is needed. Every conversion runs locally.

Explore the full suite of Time tools and 290+ other free utilities at Chunky Munster.