Convert EST to IST Eastern Standard Time ↔ India Standard Time Free Online Secure
Type a time in EST and read it in IST straight away. The offset is +10:30 h, the arithmetic wraps at midnight, and the answer says which day it lands on.
Nothing uploaded
Through the day — Convert EST to IST (Eastern Standard Time ↔ India Standard Time)
| EST | IST |
|---|---|
| 00:00 | 10:30 |
| 03:00 | 13:30 |
| 06:00 | 16:30 |
| 09:00 | 19:30 |
| 12:00 | 22:30 |
| 15:00 | 01:30 |
| 18:00 | 04:30 |
| 21:00 | 07:30 |
Where these units come from
Until the middle of the nineteenth century every town kept its own noon, set by the sun overhead, and nobody minded that the next town was four minutes behind. Railways ended that: a timetable cannot be written for a hundred local noons. Britain put its railways on Greenwich time in 1847, and in 1884 the International Meridian Conference in Washington chose Greenwich as the prime meridian and sketched the twenty-four-hour scheme we still use. Greenwich Mean Time was the world's reference until 1972, when Coordinated Universal Time replaced it: UTC is kept by atomic clocks and tied back to the turning Earth by leap seconds. The abbreviations on this page name standard time — the winter setting — which is why each one is a fixed number of hours rather than something that drifts through the year.
Where you meet them
A time zone becomes real the moment two people in different places have to agree on one moment: a call between offices, a flight that lands before it took off, a market that opens while you are asleep, a deadline written in somebody else's afternoon. Server logs, train and flight schedules and anything stamped with a time are kept in UTC precisely so that the question can always be settled, no matter whose clock was on the wall.
Questions people ask
What about summer time?
The offsets here are standard-time offsets, the ones a zone keeps in winter. Where summer time is observed, the same places move one hour further on for part of the year and take a different name: Central European Time becomes Central European Summer Time, Eastern Standard Time becomes Eastern Daylight Time. The switching dates are not the same in every country, and the two hemispheres change in opposite months, so for a date inside a summer-time period add an hour to whichever side observes it.
Why isn't every difference a whole number of hours?
Because offsets are decided by governments, not by geometry. India is half an hour off the hour, at UTC+05:30; Nepal is three quarters, at UTC+05:45; the Chatham Islands are at UTC+12:45. Any of these can be changed by law, and several countries have moved their offset within living memory.
Is the answer exact?
Where both units are defined in terms of one another by whole numbers, yes — the page says so above the figure, and the only rounding is in how many digits are shown. Where the ratio has no finite decimal, the page shows twelve significant digits and says the relation is approximate rather than pretending otherwise.
Does anything I type leave my device?
No. The arithmetic runs in your browser; nothing is uploaded and there is no server to upload it to. Load the page once and it keeps working with the network switched off.
From Wall Street time to Indian time: ten and a half hours
A notice from the United States says the market opens at 9:30 a.m. ET. A televised debate is scheduled for 9:00 p.m. ET. A big final starts at 6:30 p.m. ET. A reader in Mumbai, Delhi or Bangalore asks what the clock says at home at that moment, and the answer comes from a “convert EST to IST” calculation. On standard time the rule is a single line: add ten and a half hours. 9:30 a.m. EST becomes 20:00 IST, 9:00 p.m. EST becomes 07:30 IST the next day, and 6:30 p.m. EST becomes 05:00 IST the next day. India does not change its clocks, so the gap moves only when America goes onto summer time: from 8 March to 31 October it is nine and a half hours.
The page covers the rule, the tables, a portrait of each zone and examples from the markets, sport, politics, technology, outsourcing and travel. The calculation takes place in your browser, and nothing you type is sent to a server.
How to convert EST to IST
Add ten and a half hours
American Eastern time is UTC−5 and India sits at UTC+5:30. Ten hours and thirty minutes separate the two, with India ahead. Take the New York time on a 24-hour clock and put 10 hours 30 minutes on top. If the total passes 24:00, subtract 24 and move to the next date. Any Eastern time from 13:30 onward falls on the following day in India.
Eight values to check
04:00 EST is 14:30 IST. 07:15 EST is 17:45 IST. 09:30 EST is 20:00 IST. 12:00 EST is 22:30 IST. 14:00 EST is 00:30 IST the next day. 18:30 EST is 05:00 IST the next day. 21:00 EST is 07:30 IST the next day. 23:45 EST is 10:15 IST the next day. The last four are on the following day.
When America goes onto summer time
In summer, EDT against IST is nine and a half hours: 9:30 a.m. EDT is 19:00 IST. The figure changes because America moves its clocks and India does not. Anyone who has to convert EST to IST between 8 March and 31 October takes an hour off the winter result.
The eastern zone of North America
Its cities
From Montreal to Miami the winter clock stands at UTC−5. It is the time in New York, Boston, Washington, Atlanta and Toronto. When spring comes the clock rises to UTC−4 under the name EDT. American notices write “ET”.
Why it concerns you
American exchanges, large banks, television networks and federal agencies fix their schedules on Eastern time, so a reader in India often has to convert EST to IST.
Indian Standard Time
One zone for a whole country
India uses a single zone, UTC+5:30, from Gujarat to Assam. It has no summer time, so the clock is the same in every month. The half hour at the end of the gap explains why the minutes in the answer change: 9:15 a.m. EST becomes 19:45 IST.
The neighbours
Sri Lanka keeps the same time as India. Nepal is 15 minutes ahead (UTC+5:45), Pakistan 30 minutes behind (UTC+5) and Bangladesh 30 minutes ahead (UTC+6).
Ten and a half hours between two clocks
The office day
An American working day of 09:00 to 17:00 is 19:30 to 03:30 in India. An Indian one of 09:00 to 17:00 is 22:30 to 06:30 on the Eastern clock of the previous day. The two standard schedules never overlap, so mixed teams meet by shifting hours: the Indians work in the evening, the Americans early in the morning.
Who calls and when
A call from New York at 8:00 a.m. EST reaches India at 18:30, as the working day ends. A call at 4:00 p.m. EST reaches 02:30 IST, in the middle of the night, so the American morning is the usual choice. A “convert EST to IST” calculation made in advance shows who takes the call at home.
Half the globe by air
A flight from New York to Delhi that leaves at 22:00 EST and takes nearly fifteen hours lands at 23:30 IST on the following day. The ticket shows 22:00 and 23:30, so it looks like a trip of twenty-five and a half hours, although the sky is crossed in fifteen.
The American market open in the Indian evening
The trading session
The New York exchange opens at 9:30 a.m. EST, which is 20:00 IST, and closes at 4:00 p.m. EST, which is 02:30 IST the next day. An investor in India follows the American market through the evening and the night.
The Indian market
The Mumbai exchange closes at 15:30 IST, which is 5:00 a.m. EST. The two exchanges never trade at the same time. Doing a “convert EST to IST” calculation for each line of the timetable shows a gap of more than four hours between them.
The American central bank’s decision
The two o’clock statement
The statement on interest rates appears at 2:00 p.m. EST, which is 00:30 IST, and the press conference follows at 01:00 IST. Indian analysts watch late at night, or read a summary in the morning.
The effect on the rupee
The rupee reacts in the next day’s Indian session, which opens at 09:15 IST. An hour out in a “convert EST to IST” calculation can move the decision to the previous day.
American election debates
The evening hour
A debate that starts at 9:00 p.m. EST starts at 07:30 IST the next day. Indians watch live over breakfast, Americans after dinner.
Election night
Polls closing in the eastern states at 8:00 p.m. EST means 06:30 IST. The first results appear in India during the first hour of the morning.
The football final on an Indian morning
The kick-off
The championship game starts at 6:30 p.m. EST, which is 05:00 IST the next day. Indian fans get up early or follow the highlights.
The half-time show
The interval falls around 8:15 p.m. EST, which is 06:45 IST. Whoever makes a “convert EST to IST” calculation in advance knows whether there is time to see the show before leaving for work.
Film awards on Monday morning
The ceremony
The awards gala starts on Sunday at 7:00 p.m. ET. In March America is already on summer time, so the gap to India is nine and a half hours: 7:00 p.m. EDT is 04:30 IST on Monday.
The red carpet
The red-carpet coverage begins two hours earlier, at 5:00 p.m. EDT, which is 02:30 IST. Indian film fans stay up until the morning.
Outsourcing and support centres
Evening shifts
Support centres in India serving American customers work evening and night shifts. A call received at 9:00 a.m. EST is taken at 19:30 IST, and one at 5:00 p.m. EST at 03:30 IST.
Handing work over
An engineer in Bangalore on the evening shift who finishes at 02:30 IST hands over at 4:00 p.m. EST, while the New York colleagues are still at the office. In the other direction, whatever is left unresolved at 5:00 p.m. EST arrives at 03:30 IST and waits for the Indian morning. A “convert EST to IST” calculation at each handover shows who is actually working at that moment.
Product launches
The one o’clock presentation
Big product presentations are often held at 1:00 p.m. ET, which in September is 22:30 IST. Indian technology fans stay up late in the evening.
Availability in the shops
Pre-orders open in the morning, at 5:00 a.m. ET, which is 14:30 IST, in the middle of the Indian afternoon.
Cricket in American stadiums
The morning match
A cricket match played in New York at 10:30 a.m. EDT starts at 20:00 IST. Indians watch in the evening, after work, in an extended prime time.
The evening match
A game starting at 8:00 p.m. EDT starts at 05:30 IST the next day. For an Indian fan that is a very early morning.
New Year in Times Square
The ball’s descent
The Times Square ball drops at midnight on 31 December, New York time, which is 10:30 IST on the morning of 1 January. Indians see it after breakfast.
The evening programme
Concerts in the square begin at 6:00 p.m. EST, which is 04:30 IST. Whoever wants to see the whole programme gets up at dawn.
Thanksgiving
The morning parade
The department-store parade begins at 9:00 a.m. EST, which is 19:30 IST. Indian viewers follow it in the evening on a television or phone screen.
The family dinner
In many families dinner starts at 4:00 p.m. EST, which is 02:30 IST. Relatives in India therefore call before 02:30 or in the American afternoon.
Visa appointments
Interview time
Visa interviews in India are given in the consulate’s local time. Information sessions held by American universities, however, use Eastern time: one at 10:00 a.m. EST is at 20:30 IST.
Deadlines
A deadline of 11:59 p.m. EST falls at 10:29 a.m. IST the next day. Students who count the deadline by their own clock must allow for that difference. A “convert EST to IST” calculation that is an hour out costs a day.
Dated examples
January
On Wednesday 21 January, 09:00 EST is 19:30 IST. The gap is ten and a half hours.
Early March
On Wednesday 4 March, 09:00 EST is still 19:30 IST. America has not yet moved to summer time.
Mid-March
On Wednesday 11 March, 09:00 EDT is 18:30 IST. America moved to summer time on 8 March and India did not, so the gap is nine and a half hours.
July and November
On Wednesday 22 July, 09:00 EDT is 18:30 IST. On Wednesday 4 November, 09:00 EST is 19:30 IST again, because America returned to standard time on 1 November.
Telemedicine across continents
Consultations
A consultation booked for 10:00 a.m. EST is at 20:30 IST. Indian doctors see American patients in the evening, after clinic hours.
Prescriptions and dates
A prescription issued at 00:20 IST on 5 March was issued at 1:50 p.m. EST on 4 March. A “convert EST to IST” calculation made with the date in view shows the exact day of issue.
Asian zones counted from the Eastern clock
How many hours to add
From Eastern time add ten and a half hours for India, ten and three-quarters for Nepal, thirteen for China and Singapore and fourteen for Japan. On summer time, subtract one hour from each, because Asia does not change its clocks.
One moment on four clocks
When it is 12:00 in New York, it is 22:30 in Delhi, 23:00 in Dhaka, 01:00 in Singapore and 02:00 the next day in Tokyo. An invitation with all the hours beside it spares the reader any convert EST to IST.
When the gap is not the usual one
The 2026 calendar
The gap between EST and IST changes during the year. In 2026: 1 January to 7 March and 1 November to 31 December — IST runs 10 hours 30 minutes ahead of EST; 8 to 28 March, 29 March to 24 October and 25 to 31 October — IST runs 9 hours 30 minutes ahead of EST.
How to apply it
During the summer periods the zones are called EDT and IST. The calculator assumes the winter gap of 10 hours 30 minutes; adjust by the difference shown for your date. Whenever you convert EST to IST, check which period the date falls in first.
The full day, hour by hour
EST hours and their IST equivalents
00:00 EST corresponds to 10:30 IST. 01:00 EST corresponds to 11:30 IST. 02:00 EST corresponds to 12:30 IST. 03:00 EST corresponds to 13:30 IST. 04:00 EST corresponds to 14:30 IST. 05:00 EST corresponds to 15:30 IST. 06:00 EST corresponds to 16:30 IST. 07:00 EST corresponds to 17:30 IST. 08:00 EST corresponds to 18:30 IST. 09:00 EST corresponds to 19:30 IST. 10:00 EST corresponds to 20:30 IST. 11:00 EST corresponds to 21:30 IST. 12:00 EST corresponds to 22:30 IST. 13:00 EST corresponds to 23:30 IST. 14:00 EST corresponds to 00:30 IST (next day). 15:00 EST corresponds to 01:30 IST (next day). 16:00 EST corresponds to 02:30 IST (next day). 17:00 EST corresponds to 03:30 IST (next day). 18:00 EST corresponds to 04:30 IST (next day). 19:00 EST corresponds to 05:30 IST (next day). 20:00 EST corresponds to 06:30 IST (next day). 21:00 EST corresponds to 07:30 IST (next day). 22:00 EST corresponds to 08:30 IST (next day). 23:00 EST corresponds to 09:30 IST (next day).
Reading the rows
Every line gives a EST time and the IST time at the same instant, with a note wherever the date moves. It is the quickest check when you convert EST to IST. Watch the minutes: a thirty-minute difference means :00 and :30 swap places and the hour is adjusted accordingly. These rows use the standard (winter) gap; on the dates listed in the period section the gap is different.
Thirty minutes past, hour by hour
EST into IST
00:30 EST corresponds to 11:00 IST. 01:30 EST corresponds to 12:00 IST. 02:30 EST corresponds to 13:00 IST. 03:30 EST corresponds to 14:00 IST. 04:30 EST corresponds to 15:00 IST. 05:30 EST corresponds to 16:00 IST. 06:30 EST corresponds to 17:00 IST. 07:30 EST corresponds to 18:00 IST. 08:30 EST corresponds to 19:00 IST. 09:30 EST corresponds to 20:00 IST. 10:30 EST corresponds to 21:00 IST. 11:30 EST corresponds to 22:00 IST. 12:30 EST corresponds to 23:00 IST. 13:30 EST corresponds to 00:00 IST (next day). 14:30 EST corresponds to 01:00 IST (next day). 15:30 EST corresponds to 02:00 IST (next day). 16:30 EST corresponds to 03:00 IST (next day). 17:30 EST corresponds to 04:00 IST (next day). 18:30 EST corresponds to 05:00 IST (next day). 19:30 EST corresponds to 06:00 IST (next day). 20:30 EST corresponds to 07:00 IST (next day). 21:30 EST corresponds to 08:00 IST (next day). 22:30 EST corresponds to 09:00 IST (next day). 23:30 EST corresponds to 10:00 IST (next day).
Short explanation
Calls, flights and jobs frequently sit at half past. The list covers all twenty-four of them, which is handy if you have to convert EST to IST for a long timetable. The gap used here is the standard winter one; the period section lists the dates on which it differs.
Conversions with minutes
EST into IST
01:05 EST corresponds to 11:35 IST. 03:20 EST corresponds to 13:50 IST. 05:50 EST corresponds to 16:20 IST. 07:35 EST corresponds to 18:05 IST. 10:10 EST corresponds to 20:40 IST. 13:25 EST corresponds to 23:55 IST. 16:40 EST corresponds to 03:10 IST (next day). 19:55 EST corresponds to 06:25 IST (next day). 22:15 EST corresponds to 08:45 IST (next day). 23:05 EST corresponds to 09:35 IST (next day).
How to check
Each line shows how a time with minutes is carried across. The half-hour in the offset moves each minute reading by thirty, which is why this pair needs a second look. These rows use the standard (winter) gap; on the dates listed in the period section the gap is different.
The rhythm of the day in IST
Even-numbered EST hours seen from IST
06:00 EST corresponds to 16:30 IST (afternoon). 08:00 EST corresponds to 18:30 IST (evening). 10:00 EST corresponds to 20:30 IST (evening). 12:00 EST corresponds to 22:30 IST (night). 14:00 EST corresponds to 00:30 IST (night). 16:00 EST corresponds to 02:30 IST (night). 18:00 EST corresponds to 04:30 IST (night). 20:00 EST corresponds to 06:30 IST (early morning). 22:00 EST corresponds to 08:30 IST (morning).
Reading the labels
For every second hour of the EST day the list gives the IST time and a word for the part of the day there. Use it to decide whether a request to convert EST to IST gives a polite hour. These rows use the standard (winter) gap; on the dates listed in the period section the gap is different.
Checklist: how to convert EST to IST
First
Confirm the zones
EST is also the name of Australia’s Eastern Standard Time (UTC+10); here it is the North American Eastern zone. Take care: IST may refer to Ireland or Israel as well, but here it is Indian Standard Time.
Use a 24-hour clock
Write 4:30 p.m. as 16:30 and 12:00 a.m. as 00:00 before you start. For example, 09:15 EST becomes 19:45 IST.
After the sum
The operation
Add 10 hours 30 minutes. If the result passes midnight, correct the date: readings from 13:30 fall on the next date.
A second example
An evening check: 22:40 EST gives 09:10 IST (next day).
Common slips when you convert EST to IST
Subtracting instead of adding
IST is in front of EST: expect a bigger number, not a smaller one.
Losing the date
EST readings from 13:30 fall on the next date. If the date stays put, the answer is a full day out.
The standard figure in the wrong weeks
The gap between EST and IST is not the same on every date in 2026. Check the period list above before you rely on the standard figure.
Confusing the abbreviation
Here EST always means the North American east coast at UTC−5. Indian Standard Time is UTC+5:30; the same three letters are used for Israel and for Ireland’s summer clock, which this page does not cover.
Quick answers
How far apart are EST and IST?
10 hours 30 minutes, and IST is ahead of EST. That is the standard figure; on some dates in 2026 it differs, as the period list shows.
What do I do to convert EST to IST?
Add 10 hours 30 minutes to the EST time, then fix the date if the result passes midnight.
How much is 09:00 EST in IST?
19:30 IST in the standard period.
Do the seasons affect this conversion?
Yes, on some dates; the period list above shows which.
Is my input stored or uploaded?
No. Nothing leaves the page.
Related conversions
You may also want Convert EST to UTC, Convert EST to CST, Convert CET to IST, Convert UTC to IST, Convert IST to CST, Convert WET to EST, Convert CST to EST, Convert UTC to CET, Convert CET to CST. To go the other way, use Convert IST to EST.
To sum up: convert EST to IST by one rule (add 10 hours 30 minutes) and a glance at the calendar. The work is done on your device.