IST to EST time converter
Enter a time in IST to get the matching time in EST, whether it falls on the next or previous day, and a full 24-hour table. Handy for planning calls between Mumbai and New Delhi and New York and Toronto.
Loading the tool…
Processing and privacy: The result is calculated inside your browser and your data is not sent to any server.
How to use it
- Enter time in ist and day in ist (optional).
- The result appears straight away and updates as you edit.
- Copy the result, or copy a link that keeps the same values to share it.
How it is calculated
EST time = IST time - 10.5 hours, because EST is UTC-5 and IST is UTC+5:30. If the result reaches 24:00 or more, subtract 24 hours and move to the next day; if it drops below 00:00, add 24 hours and move to the previous day.
Example
Inputs: Time in IST = 22:00, Day in IST (optional) = Thursday. Result: Time in EST: 11:30; Day change: Same day (0); Offset difference (EST minus IST): -10.5 hours.
Limits and caveats
- Fixed offsets are used: IST = UTC+5:30 and EST = UTC-5, whatever the date.
- New York switches to EDT (UTC-4) from the second Sunday of March to the first Sunday of November; the tool does not apply that change.
- IST here is India Standard Time (UTC+5:30), not Irish or Israel time.
Questions about this tool
What time is 09:00 IST in EST?
09:00 IST is 22:30 EST on the previous day, because EST is 10.5 hours behind IST.
Does daylight saving time change the result?
The tool keeps EST at UTC-5 all year. New York switches to EDT (UTC-4) from the second Sunday of March to the first Sunday of November; in that period the gap between New York and IST is 9.5 hours.
Which IST does this tool use?
Here IST means India Standard Time, UTC+5:30. The same letters are used for Irish Standard Time (UTC+1, Irish summer time) and Israel Standard Time (UTC+2).