Free Online Timezone Converter — UTC, GMT, EST, PST, CET, IST, JST and More
Convert times between timezones instantly with HubKit's timezone converter. Supports IANA city-based timezones, common abbreviations like UTC, GMT, EST, EDT, CST, CDT, PST, PDT, CET, CEST, IST, JST, KST, ICT, SGT, and fixed UTC offsets from UTC-12 to UTC+14. The converter automatically handles Daylight Saving Time (DST) transitions — showing the active abbreviation, current UTC offset, and a DST indicator so you always know whether standard or daylight time applies.
How to Use
Select a source timezone from the searchable dropdown — search by city name, abbreviation (PST, CET, IST), or UTC offset. Enter a date and time, or use the range sliders to scrub through 24 hours in AM/PM or 24-hour format. The target timezone updates in real time, and the world grid below shows the equivalent time across 42 major cities with DST status.
Features
- Search by timezone abbreviation (EST, PST, CET, JST, ICT, SGT, etc.), UTC offset, or city name
- Automatic Daylight Saving Time detection with DST badge and UTC offset display
- Interactive time sliders with AM/PM and 24-hour format toggle
- World clock grid showing 42 cities with flags, abbreviations, and DST status
Frequently Asked Questions
What is the difference between UTC and GMT?
UTC (Coordinated Universal Time) and GMT (Greenwich Mean Time) both refer to the time at the Prime Meridian with no offset (UTC+0). In practice they are the same, but UTC is the modern standard used in computing and aviation, while GMT is the traditional name. Neither observes Daylight Saving Time.
What is Daylight Saving Time (DST)?
DST is the practice of moving clocks forward by one hour during warmer months to extend evening daylight. For example, the US Eastern timezone switches from EST (UTC-5) to EDT (UTC-4) in spring, and back in fall. This converter detects DST automatically and shows a "DST" badge and the active abbreviation when daylight time is in effect.
What do timezone abbreviations like EST, EDT, PST, PDT, CET, and CEST mean?
EST (Eastern Standard Time, UTC-5) and EDT (Eastern Daylight Time, UTC-4) are the winter and summer times for the US East Coast. PST (UTC-8) and PDT (UTC-7) are the Pacific equivalents. CET (Central European Time, UTC+1) and CEST (UTC+2) cover most of mainland Europe. Other common abbreviations include CST/CDT (US Central), MST/MDT (US Mountain), GMT/BST (UK), IST (India, UTC+5:30), JST (Japan, UTC+9), KST (Korea, UTC+9), ICT (Indochina, UTC+7), and SGT (Singapore, UTC+8).
Does this converter handle timezones with non-whole-hour offsets?
Yes. Timezones like IST (India Standard Time, UTC+5:30), Nepal Time (UTC+5:45), and Chatham Islands (UTC+12:45) are supported through IANA timezone identifiers. The converter correctly shows their half-hour or quarter-hour offsets.
How do I convert between PST and CET, or EST and JST?
Select the source abbreviation (e.g., PST/PDT) from the "From" dropdown and the target (e.g., CET/CEST) from the "To" dropdown. The converter uses IANA timezone data, so DST transitions are handled automatically — the result is always correct for the specific date you enter.