EST to IST Converter
IST is 10 hours 30 minutes ahead of EST. In US daylight time (EDT, March to November) the gap is 9 hours 30 minutes. 9:00 AM EST is 7:30 PM in India, and 9:00 AM EDT is 6:30 PM.
EST or EDT: Which One You Need Today
EST is Eastern Standard Time, UTC-5, in use from the first Sunday in November to the second Sunday in March. For the other eight months New York, Boston and Atlanta are on EDT, UTC-4, even though many people keep writing "EST". The table has a column for each. Between March and early November use the EDT column: 9:00 AM Eastern is 6:30 PM in India then, not 7:30 PM.
IST needs the same care. Here it means India Standard Time, UTC+5:30, but the same three letters are also used for Israel (UTC+2) and for Ireland's summer time (UTC+1). If an invite says only "IST", confirm that the sender is in India before converting.
EST to IST, Every Hour
Full 24-hour reference table. Use the live clocks above for the exact current offset.
| 🇺🇸 EST/EDT | 🇮🇳 EST → ISTUTC-5 to UTC+5:30 | 🇮🇳 EDT → ISTUTC-4 to UTC+5:30 |
|---|---|---|
| 00:00 | 10:30 AM | 9:30 AM |
| 01:00 | 11:30 AM | 10:30 AM |
| 02:00 | 12:30 PM | 11:30 AM |
| 03:00 | 1:30 PM | 12:30 PM |
| 04:00 | 2:30 PM | 1:30 PM |
| 05:00 | 3:30 PM | 2:30 PM |
| 06:00 | 4:30 PM | 3:30 PM |
| 07:00 | 5:30 PM | 4:30 PM |
| 08:00 | 6:30 PM | 5:30 PM |
| 09:00 | 7:30 PM | 6:30 PM |
| 10:00 | 8:30 PM | 7:30 PM |
| 11:00 | 9:30 PM | 8:30 PM |
| 12:00 | 10:30 PM | 9:30 PM |
| 13:00 | 11:30 PM | 10:30 PM |
| 14:00 | 12:30 AMnext day | 11:30 PM |
| 15:00 | 1:30 AMnext day | 12:30 AMnext day |
| 16:00 | 2:30 AMnext day | 1:30 AMnext day |
| 17:00 | 3:30 AMnext day | 2:30 AMnext day |
| 18:00 | 4:30 AMnext day | 3:30 AMnext day |
| 19:00 | 5:30 AMnext day | 4:30 AMnext day |
| 20:00 | 6:30 AMnext day | 5:30 AMnext day |
| 21:00 | 7:30 AMnext day | 6:30 AMnext day |
| 22:00 | 8:30 AMnext day | 7:30 AMnext day |
| 23:00 | 9:30 AMnext day | 8:30 AMnext day |
* "next day" = converted time falls on the following calendar day.
The Half-Hour Times People Look Up
India is on a half-hour offset, so the common :30 start times are worth having ready:
| Eastern time | India time |
|---|---|
| 6:30 AM | 5:00 PM on EST, 4:00 PM on EDT |
| 8:30 AM | 7:00 PM on EST, 6:00 PM on EDT |
| 9:30 AM | 8:00 PM on EST, 7:00 PM on EDT |
| 10:30 AM | 9:00 PM on EST, 8:00 PM on EDT |
| 12:30 PM | 11:00 PM on EST, 10:00 PM on EDT |
| 6:30 PM | 5:00 AM the next day on EST, 4:00 AM the next day on EDT |
Whole-hour Eastern times land on :30 in India, and :30 times land on the hour.
An Eastern Morning, an India Evening
No hour is inside a 9-to-5 day on both sides. The closest is the start of the Eastern day, which is the end of the India day: 7:30 to 9:30 AM Eastern is 6:00 PM to 8:00 PM in India on EST and 5:00 PM to 7:00 PM on EDT.
| Eastern Standard Time | India Standard Time |
|---|---|
| 7:30 AM–9:30 AM | 6:00 PM–8:00 PM |
| EST → IST: Eastern Standard Time: partly outside 9 AM–5 PM. India Standard Time: after 5 PM. An early Eastern morning that lands in the India evening. | |
| 7:30 AM–9:30 AM | 5:00 PM–7:00 PM |
| EDT → IST: Eastern Standard Time: partly outside 9 AM–5 PM. India Standard Time: after 5 PM. The same Eastern hours, an hour earlier in India. | |
"Inside 9 AM–5 PM" is a planning assumption for a standard office day on each side, not a claim about any company's hours.
Three Ways the Answer Goes Wrong
- Using the EST column in summer. The result is an hour late: 9:00 AM EDT is 6:30 PM in India, not 7:30 PM.
- Subtracting or adding 10 or 9 hours and forgetting the half hour. The gap is 10 hours 30 minutes or 9 hours 30 minutes, never a whole number.
- Keeping the same date. An Eastern evening is the next morning in India: 8:00 PM Eastern is 6:30 AM the next day in India on EST.
Going back, India's 9:00 AM is 10:30 PM the previous day in Eastern Time on EST and 11:30 PM the previous day on EDT.