Timezone Converter
See any moment in time across 50+ world cities — useful for scheduling international calls and meetings.
Our timezone converter shows the same point in time across 50+ major world cities instantly. Pick any date and time, select your source timezone, and the tool automatically displays the equivalent local time for every city in the list — including the UTC offset for each zone.
Time zone conversion is critical for scheduling international meetings, planning travel, and coordinating remote teams. Getting it wrong means calling colleagues at 3 AM or missing a flight. Use this tool to find a time that works across multiple zones, and check whether daylight saving time is currently in effect in your target locations.
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How does the timezone converter work?
The converter takes your chosen date and time, interprets it in the selected source timezone, then converts that exact UTC moment to local time in all 50+ listed cities. Conversion uses the browser's built-in Intl.DateTimeFormat API, which respects daylight saving time (DST) automatically.
Does it account for daylight saving time?
Yes. Daylight saving time is handled automatically by the Intl API. The UTC offset shown next to each city reflects the actual offset on the selected date — so UTC+1 in winter and UTC+2 in summer for Central European Time, for example.
What is UTC?
UTC (Coordinated Universal Time) is the world's primary time standard. All other timezones are defined as an offset from UTC. UTC does not observe daylight saving time, making it a stable reference for international scheduling.
Why might a meeting scheduled at "9 AM EST" be confusing?
Timezone abbreviations like EST can be ambiguous — EST means UTC−5 in North America, but different abbreviations overlap across the world. It is always safer to specify a full timezone name (e.g., "America/New_York") or state the UTC offset explicitly.
How many time zones exist in the world?
There are 24 standard time zones based on 15-degree longitude increments, but in practice there are 40+ actual time zones, including half-hour offsets (India UTC+5:30, Iran UTC+3:30) and quarter-hour offsets (Nepal UTC+5:45). Some territories use non-standard offsets to align with their geography or national preference.
What is the International Date Line?
The International Date Line runs roughly along the 180° meridian in the Pacific Ocean. Crossing it eastward (towards the Americas) sets you back one calendar day; crossing westward (towards Asia/Pacific) advances you one day. This is why it's possible to have two different dates simultaneously on Earth.
Which countries span the most time zones?
France has the most time zones (12) due to its overseas territories. Russia has 11, the United States has 6 (including territories), and Australia has 5 (including half-hour zones like ACST UTC+9:30). China officially uses only 1 time zone (UTC+8) despite spanning 5 geographical zones.
What is the difference between GMT and UTC?
GMT (Greenwich Mean Time) is a timezone at Greenwich, London, with UTC offset +0. UTC (Coordinated Universal Time) is an atomic clock standard that is also at UTC+0 offset. In practice they show the same time, but UTC is the modern scientific standard. Neither observes daylight saving time.
What is a good time to schedule a meeting between the US and Europe?
9–10 AM Eastern Time (ET) works well for US/Europe overlap: it's 3–4 PM in London, 4–5 PM in Paris/Berlin, and 6–7 PM in Moscow. For US West Coast (PT) and Europe, 8–9 AM PT = 4–5 PM CET. For US and Asia, there is usually no good overlap — one side works early morning or late evening.
What does a UTC offset like "UTC+3" mean?
A UTC offset tells you how many hours ahead or behind UTC a timezone is. UTC+3 means the local time is 3 hours ahead of UTC — e.g., when it's 12:00 UTC, it's 15:00 in UTC+3. UTC−5 (Eastern Standard Time) means 5 hours behind: 12:00 UTC = 07:00 ET. UTC offsets range from UTC−12 to UTC+14.