Time Zone Converter

A free online conversion calculator that convert time between different world time zones instantly. schedule meetings across time zones and compare clocks worldwide. Get accurate results instantly without any software installation. Global teams, remote freelancers, and international travelers constantly juggle time zones — scheduling a standup between Berlin and San Francisco or catching a live stream from Tokyo requires precise offset awareness. Daylight Saving Time changes and region-specific rules make mental conversions unreliable, especially across hemispheres with opposite DST schedules. Pick a source city or timezone and a target timezone to see the converted time instantly, with a visual overlap indicator showing business-hour compatibility. Daylight Saving Time transitions are handled automatically using the IANA timezone database. Pick any source city or UTC offset and the tool displays the corresponding local time across all major world zones side by side. A visual timeline highlights overlapping working hours, and DST adjustments apply automatically based on each region's current rules. Timezone offset logic — including the IANA timezone database rules — is resolved entirely in-browser through JavaScript. Meeting schedules and participant locations never reach a server, keeping confidential calendar coordination private.