IST to EST converter
India Standard Time to Eastern Time. EST is 10 h 30 min behind of IST in January and 9 h 30 min behind in July.
From
IST · Kolkata GMT+5:30 · UTC+5:30
- EST · New YorkEDT · UTC−4 · 9 h 30 min behind23:30Sun, Sep 27 · previous day
The gap between IST and EST
| 2026 | IST clocks | EST clocks | Difference |
|---|---|---|---|
| January | GMT+5:30 UTC+5:30 | EST UTC−5 | 10 h 30 min behind |
| July | GMT+5:30 UTC+5:30 | EDT UTC−4 | 9 h 30 min behind |
The gap changes on: Sun, March 8, 2026 (9 h 30 min behind); Sun, November 1, 2026 (10 h 30 min behind); Sun, March 14, 2027 (9 h 30 min behind); Sun, November 7, 2027 (10 h 30 min behind).
Convert the other way: EST to IST · Plan a meeting across more places
IST to EST time table
Every hour of the IST day and the matching EST time, for a mid-January and a mid-July date.
| IST | EST · January | EST · July |
|---|---|---|
| 12:00 AM | 1:30 PM (−1 day) | 2:30 PM (−1 day) |
| 1:00 AM | 2:30 PM (−1 day) | 3:30 PM (−1 day) |
| 2:00 AM | 3:30 PM (−1 day) | 4:30 PM (−1 day) |
| 3:00 AM | 4:30 PM (−1 day) | 5:30 PM (−1 day) |
| 4:00 AM | 5:30 PM (−1 day) | 6:30 PM (−1 day) |
| 5:00 AM | 6:30 PM (−1 day) | 7:30 PM (−1 day) |
| 6:00 AM | 7:30 PM (−1 day) | 8:30 PM (−1 day) |
| 7:00 AM | 8:30 PM (−1 day) | 9:30 PM (−1 day) |
| 8:00 AM | 9:30 PM (−1 day) | 10:30 PM (−1 day) |
| 9:00 AM | 10:30 PM (−1 day) | 11:30 PM (−1 day) |
| 10:00 AM | 11:30 PM (−1 day) | 12:30 AM |
| 11:00 AM | 12:30 AM | 1:30 AM |
| 12:00 PM | 1:30 AM | 2:30 AM |
| 1:00 PM | 2:30 AM | 3:30 AM |
| 2:00 PM | 3:30 AM | 4:30 AM |
| 3:00 PM | 4:30 AM | 5:30 AM |
| 4:00 PM | 5:30 AM | 6:30 AM |
| 5:00 PM | 6:30 AM | 7:30 AM |
| 6:00 PM | 7:30 AM | 8:30 AM |
| 7:00 PM | 8:30 AM | 9:30 AM |
| 8:00 PM | 9:30 AM | 10:30 AM |
| 9:00 PM | 10:30 AM | 11:30 AM |
| 10:00 PM | 11:30 AM | 12:30 PM |
| 11:00 PM | 12:30 PM | 1:30 PM |
About these two clocks
IST — India Standard Time. Used in all of India — Mumbai, Delhi, Bengaluru. India does not use daylight saving time, so IST is UTC+5:30 all year.
EST — Eastern Time. Used in New York, Toronto, Miami, Atlanta. Strictly, EST is the winter name; from March to November the same clocks show EDT (UTC−4). This page follows the clocks, so summer dates use EDT.
All figures on this page come from the IANA time zone database (the same data your phone and laptop use), evaluated for the date in question. Abbreviations are ambiguous — “IST” also means Irish or Israel Standard Time, and “CST” is China Standard Time in Asia — so this page uses Asia/Kolkata and America/New_York explicitly.
Questions people ask
How many hours ahead or behind is EST compared with IST?
EST is 10 h 30 min behind of IST in January and 9 h 30 min behind in July. The gap moves because daylight saving time starts and ends on different dates (or not at all) in the two places.
What is 9 am IST in EST?
On a January date, 9:00 am IST is 10:30 PM (−1 day) EST. In July it is 11:30 PM (−1 day). Use the converter above for any other date.
Which cities use IST?
India Standard Time (IST) is used in all of India — Mumbai, Delhi, Bengaluru. India does not use daylight saving time, so IST is UTC+5:30 all year.
Which cities use EST?
Eastern Time (EST) is used in New York, Toronto, Miami, Atlanta. Strictly, EST is the winter name; from March to November the same clocks show EDT (UTC−4). This page follows the clocks, so summer dates use EDT.
When is a good time for a IST–EST call?
Look for the hours where both columns in the table fall between about 8 am and 6 pm. If none exist, the meeting planner on our home page shows the least-bad options and lets you share a link that converts for every attendee.
Related conversions
UTC to ESTPST to ESTCST to ESTGMT to ESTMST to ESTIST to UTCIST to CSTIST to PSTCET to ESTBST to EST