Coordinating a meeting or deploy window across a distributed team means juggling several timezones at once, and mental UTC-offset math gets error-prone fast — especially with daylight saving time shifts. This tool shows several live clocks side by side, built entirely from your browser’s own timezone database.
What Is the World Clock?
A grid of live, second-by-second updating clocks, one per timezone, each showing the current local time, date, and UTC offset. Add any of the hundreds of IANA timezone names your browser supports, or remove any of the sensible defaults.
How to Use It
- Open the tool at /tools/world-clock.
- Review the default clocks (UTC, New York, London, Kolkata, Tokyo, Sydney).
- Type an IANA timezone name (e.g.
Asia/Singapore) into the add field and click Add, or pick one from the autocomplete suggestions. - Remove any clock you don’t need with its ✕ button.
Key Features
- Live-updating clocks, refreshed every second for every timezone shown.
- Full IANA timezone support, pulled directly from your browser’s
Intl.supportedValuesOf('timeZone')— no external timezone API. - Automatic DST handling, since the UTC offset shown is computed live and reflects whichever offset is currently in effect.
- Customizable set, add or remove any timezone to build the exact view your team needs.
When to Use This Tool
- Scheduling meetings across a distributed team without manual offset math.
- Planning deploy windows that need to land during business hours in a specific region.
- Quickly checking what time it is somewhere else before making a call or sending a message.
Try It Now
Open World Clock directly, or press ⌘K and type the tool name from anywhere on the site.
Part of the Date & Time collection on WebdevToolbox — free, browser-based developer tools with no login required.