Timezone Converter
Convert times between any two timezones. Pick your source and target timezone, enter a date and time, and see the converted result instantly. Live clocks show the current time in both zones.
UTC
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EST
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Converted Time
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Converted Date
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Time Difference
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About This Tool
The Timezone Converter helps you quickly find the equivalent time in another timezone. It covers 24+ major timezones across the Americas, Europe, Asia, and Oceania. The live clocks at the top always show the current time in your selected zones, updating every second. This tool uses fixed UTC offsets for simplicity; it does not automatically adjust for daylight saving time changes. During DST periods, select the appropriate summer time option (e.g., BST instead of GMT, or CEST instead of CET).
FAQ
What is UTC and why is it the standard?
UTC (Coordinated Universal Time) is the primary time standard by which the world regulates clocks. It replaced Greenwich Mean Time (GMT) as the international standard in 1960. UTC is based on highly precise atomic clocks and is not subject to daylight saving time. All other timezones are defined as offsets from UTC (e.g., EST is UTC-5, JST is UTC+9). Using UTC as a reference makes it possible to unambiguously communicate times across the globe.
What is daylight saving time (DST)?
Daylight saving time is the practice of advancing clocks by one hour during warmer months so that evenings have more daylight. Not all countries observe DST — it is common in the US, Canada, and most of Europe, but not used in most of Asia, Africa, or South America. When DST is in effect, timezones shift: for example, the US Eastern zone moves from EST (UTC-5) to EDT (UTC-4). This tool uses fixed offsets, so select the appropriate DST option (like CEST or BST) when needed.
What is the difference between GMT and UTC?
For most practical purposes, GMT and UTC are the same — both represent the time at the Prime Meridian (0 degrees longitude) with no offset. The technical difference is that GMT is a timezone historically based on solar observations at Greenwich, England, while UTC is a precise time standard maintained by atomic clocks worldwide. UTC is the modern standard used in aviation, computing, and international coordination, while GMT persists as a timezone name in everyday use.
Why do some timezones have half-hour or 45-minute offsets?
Most timezones are offset from UTC by whole hours, but some countries chose offsets that better match their geographic position relative to the sun. India (UTC+5:30), Iran (UTC+3:30), Nepal (UTC+5:45), and parts of Australia (UTC+9:30) use non-standard offsets. These were adopted for political, geographical, or historical reasons — for instance, India chose UTC+5:30 to be a single timezone covering the entire country despite spanning a wide longitude range.