IST Converter
India time to EST, PST, UTC, GMT
The IST converter turns Indian Standard Time (UTC+5:30) into EST, PST, UTC and GMT instantly, using your browser's own time-zone data so daylight saving is applied automatically. India does not observe daylight saving, so IST itself never shifts — only the other city's offset changes with the season.
Convert IST now
IST converter
Set a date and time in India Standard Time; EST, PST, UTC and GMT update instantly below it. Your list of cities is saved on this device.
- KolkataIndia · UTC+5:3015:00Sample
- New YorkAmerica · UTC−405:30Sample
- LondonEurope · UTC+110:30Sample
Sample shown above; the script replaces it with your chosen date and time as soon as it loads.
IST offset to EST, PST, UTC, GMT and CST
India Standard Time stays at UTC+5:30 all year. The zones below move for daylight saving on their own dates — this table shows both.
| Zone | Standard time | IST is ahead by | Daylight time | IST is ahead by | 2026 switch dates |
|---|---|---|---|---|---|
| IST to EST | EST, UTC−5 | 10 h 30 min | EDT, UTC−4 | 9 h 30 min | 8 Mar – 1 Nov |
| IST to PST converter | PST, UTC−8 | 13 h 30 min | PDT, UTC−7 | 12 h 30 min | 8 Mar – 1 Nov |
| CST to IST converter | CST, UTC−6 | 11 h 30 min | CDT, UTC−5 | 10 h 30 min | 8 Mar – 1 Nov |
| GMT to IST | GMT, UTC+0 | 5 h 30 min | BST, UTC+1 | 4 h 30 min | 29 Mar – 25 Oct |
| UTC to IST converter | UTC | 5 h 30 min | — (no DST) | 5 h 30 min | — |
US dates follow the second Sunday in March to the first Sunday in November (15 U.S. Code § 260a). UK/EU dates follow the last Sunday in March to the last Sunday in October (EU Directive 2000/84/EC, UK Energy Act). Checked against the IANA time zone database, 16 October 2026 — re-check after each switch date.
India business hours overlap
Each row shows the 24 hours of the selected date in that city. Green cells are 9:00–18:00 working hours; columns where every city is green — including India's 9:00–18:00 IST workday — are good meeting slots.
IST converter by pair
Each pair page below has its own converter, offset table and 2026 switch dates.
- ist to est — India to New York time, EST/EDT
- cst to ist converter — US Central time to India time
- pst to ist converter — Pacific time to India time
- utc to ist converter — also covers GMT, BST and CET
- time zone converter by date — compare more than two cities with DST
A few things that trip people up
IST itself never changes
India Standard Time has stayed at UTC+5:30 every day of the year since 1947. When a converted time looks "off by an hour" from one visit to the next, the shift always comes from the other city crossing its own daylight-saving date — not from India.
Half-hour and 45-minute offsets
India runs on UTC+5:30 all year, Nepal on UTC+5:45 and parts of Australia on UTC+9:30. If a meeting invite looks "off by thirty minutes" against IST, an unusual offset on the other side is usually why.
Write times with the zone
When you send a time to someone outside India, add the zone or city — "15:00 IST" or "4:30 AM EST" — or better, both local times. It removes all doubt about which clock you meant.
Frequently asked questions
Does IST observe daylight saving time?
No. India Standard Time has stayed at UTC+5:30 year-round since 1947 and does not move its clocks. Any shift you see in a converted time comes from the other city changing to or from its own daylight saving time, not from IST.
What is the IST to EST time difference?
IST is 10 hours 30 minutes ahead of EST (US Eastern Standard Time, UTC−5), and 9 hours 30 minutes ahead of EDT (Eastern Daylight Time, UTC−4) while the US is on daylight saving, roughly mid-March to early November.
What is the IST to PST time difference?
IST is 13 hours 30 minutes ahead of PST (US Pacific Standard Time, UTC−8), and 12 hours 30 minutes ahead of PDT (Pacific Daylight Time, UTC−7) during US daylight saving.
Is this site affiliated with any newspaper?
No. This is an independent time-zone utility. It does not publish news and is not affiliated with any newspaper, broadcaster or media organization of a similar name.
Share your result or suggest a fix
Did the IST converter show a time you did not expect? Email [email protected] with the date, both cities and what you expected; we check it against the IANA time zone database and note any correction with its date. Comments are switched off on this site.
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