To convert time zones, add or subtract the difference between their UTC offsets. For example, Pacific Time is 3 hours behind Eastern Time all year, while India (IST) is 9½ hours ahead of New York during US daylight saving time and 10½ hours ahead in winter.
Popular time zone conversions
US time zones
- EST to PST
- PST to EST
- EST to CST
- CST to EST
- EST to MST
- MST to EST
- CST to PST
- PST to CST
- MST to PST
- PST to MST
- CST to MST
- MST to CST
- EST to HST
- HST to PST
India (IST)
- IST to EST
- EST to IST
- IST to PST
- PST to IST
- IST to CST
- CST to IST
- IST to GMT
- GMT to IST
- IST to UTC
- UTC to IST
- GST to IST
- IST to GST
UK, Europe and UTC
- GMT to EST
- EST to GMT
- GMT to PST
- PST to GMT
- UTC to EST
- EST to UTC
- UTC to PST
- PST to UTC
- CET to EST
- EST to CET
Asia and Australia
Major time zones at a glance
| Zone | Standard | Daylight | Main places |
|---|---|---|---|
| Eastern Time | EST (UTC−5) | EDT (UTC−4) | New York, Washington DC, Boston, Atlanta, Miami, Detroit and Toronto |
| Central Time | CST (UTC−6) | CDT (UTC−5) | Chicago, Houston, Dallas, San Antonio, New Orleans, Minneapolis and Winnipeg |
| Mountain Time | MST (UTC−7) | MDT (UTC−6) | Denver, Salt Lake City, Albuquerque, Boise, El Paso and Calgary |
| Pacific Time | PST (UTC−8) | PDT (UTC−7) | Los Angeles, San Francisco, San Diego, Seattle, Portland, Las Vegas and Vancouver |
| Hawaii Time | HST (UTC−10) | No DST | Honolulu and all of Hawaii |
| UK Time | GMT (UTC+0) | BST (UTC+1) | London, Manchester, Birmingham, Edinburgh, Cardiff and Belfast |
| Coordinated Universal Time | UTC (UTC+0) | No DST | Aviation, shipping, computer servers, science and international standards |
| India Standard Time | IST (UTC+5:30) | No DST | all of India, including New Delhi, Mumbai, Bengaluru, Hyderabad, Chennai and Kolkata |
| Central European Time | CET (UTC+1) | CEST (UTC+2) | Paris, Berlin, Rome, Madrid, Amsterdam, Brussels, Vienna and Warsaw |
| Australian Eastern Time | AEST (UTC+10) | AEDT (UTC+11) | Sydney, Melbourne, Canberra and Hobart (Brisbane stays on AEST all year) |
| Japan Standard Time | JST (UTC+9) | No DST | Tokyo, Osaka, Kyoto and all of Japan |
| Gulf Standard Time | GST (UTC+4) | No DST | Dubai, Abu Dhabi and Muscat |
Frequently asked questions
How do I convert time between time zones?
Pick a time and date, choose the "From" and "To" zones, and the converter shows the matching time instantly, including the correct daylight saving rules for that date.
Does the converter handle daylight saving time?
Yes. It uses the IANA time zone database built into your browser, so conversions follow the correct DST rules for the date you pick, for example EST vs EDT or GMT vs BST.
What is the difference between EST and EDT?
EST (UTC−5) is Eastern Standard Time, used in winter. EDT (UTC−4) is Eastern Daylight Time, used from the second Sunday in March to the first Sunday in November. Many people say "EST" all year, but in summer the clock is actually on EDT.
What time zone should I use for international meetings?
Share the time in UTC or in both participants' local times. UTC never changes for daylight saving, which avoids confusion when countries change clocks on different dates.
Sources
Reviewed by Gurmej Singh, Founder, Divy Digital Hub · Last reviewed: Wednesday, September 30, 2026. All calculations run in your browser. Editorial policy.