Time Zone Converter
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🌍 Live World Clock
Convert any time between any two time zones instantly. Live world clock shows current time in major cities worldwide. Perfect for scheduling international meetings and calls.
Coordinated Universal Time (UTC) is the world's time standard. All other time zones are expressed as offsets from UTC. UTC+0 is London in winter; UTC-5 is New York in winter (EST); UTC+9 is Tokyo. UTC never changes for daylight saving — it's always the same time.
Most of North America and Europe adjust their clocks by +1 hour in summer (daylight saving time). This means the offset between two cities can change twice a year. The US moves clocks in March and November; the EU moves in March and October, creating a brief window each autumn where they're temporarily at different relative offsets.
When scheduling calls across time zones, always express meeting times in UTC to avoid confusion, then let attendees convert to their local time. "10am UTC" is unambiguous. "10am Thursday" is ambiguous — whose Thursday? Always specify both the time and the reference time zone.
Not all time zones are whole-hour offsets from UTC. India is UTC+5:30. Nepal is UTC+5:45. Australia's central zone is UTC+9:30 or UTC+10:30 depending on daylight saving. Iran is UTC+3:30. Our converter handles all half-hour and quarter-hour offsets correctly.