This IST to EST converter turns any time in India Standard Time (IST) into Eastern Standard Time (EST), using your device clock so daylight saving is applied automatically. EST is 10 hours 30 minutes behind IST when both zones are on standard time, and 9 hours 30 minutes behind during the summer months when clocks have shifted. IST is UTC+5:30; EST is UTC−5 (EDT: UTC−4).
IST covers Mumbai, Delhi, Bengaluru; EST covers New York, Toronto, Miami. Because only EST observes daylight saving time, the difference is not constant through the year. The tables below show both cases, and the converter at the top always uses the rule in force on the date you pick.
IST and EST UTC offsets
IST
UTC+5:30
India Standard Time
No daylight saving time
EST
UTC−5
Eastern Standard Time
EDT UTC−4 from March 8 to November 1, 2026
IST to EST conversion table (standard time)
| IST | EST |
|---|---|
| 12 am | 1:30 pmprevious day |
| 3 am | 4:30 pmprevious day |
| 6 am | 7:30 pmprevious day |
| 8 am | 9:30 pmprevious day |
| 9 am | 10:30 pmprevious day |
| 10 am | 11:30 pmprevious day |
| 11 am | 12:30 am |
| 12 pm | 1:30 am |
| 1 pm | 2:30 am |
| 2 pm | 3:30 am |
| 3 pm | 4:30 am |
| 4 pm | 5:30 am |
| 5 pm | 6:30 am |
| 6 pm | 7:30 am |
| 8 pm | 9:30 am |
| 10 pm | 11:30 am |
IST to EST during daylight saving
Between the dates listed above, the difference is 9 hours 30 minutes instead of 10 hours 30 minutes.
| IST | EST/EDT |
|---|---|
| 12 am | 2:30 pmprevious day |
| 3 am | 5:30 pmprevious day |
| 6 am | 8:30 pmprevious day |
| 8 am | 10:30 pmprevious day |
| 9 am | 11:30 pmprevious day |
| 10 am | 12:30 am |
| 11 am | 1:30 am |
| 12 pm | 2:30 am |
| 1 pm | 3:30 am |
| 2 pm | 4:30 am |
| 3 pm | 5:30 am |
| 4 pm | 6:30 am |
| 5 pm | 7:30 am |
| 6 pm | 8:30 am |
| 8 pm | 10:30 am |
| 10 pm | 12:30 pm |
Frequently asked questions
What is the time difference between IST and EST?
EST is 10 hours 30 minutes behind IST on standard time. During daylight saving the gap changes to 9 hours 30 minutes. That comes from the UTC offsets: IST is UTC+5:30 and EST is UTC−5. For example, 9 am IST = 10:30 pm EST the previous day, and in summer 9 am IST = 11:30 pm EST the previous day.
Is EST ahead of or behind IST?
EST is 10 hours 30 minutes behind IST, so when it is noon in IST it is 1:30 am in EST. Ahead means the clock there already shows a later time; a call at 5 pm IST lands at 6:30 am EST.
Does IST or EST observe daylight saving time in 2026?
IST keeps UTC+5:30 all year. EST switches to EDT (UTC−4) on March 8 and back on November 1. Between those dates the difference in the table above shifts by an hour, which is the usual cause of missed calls in spring and autumn.
What is the best time for a meeting between IST and EST?
Office hours (9 am to 5 pm) do not overlap at all with a 10 hours 30 minutes difference. The least painful options are early morning in EST or early evening in IST; for example 8 am IST = 9:30 pm EST the previous day and 6 pm IST = 7:30 am EST. Rotate the inconvenient slot between the two sides for recurring calls.
Which cities use IST and EST?
IST (India Standard Time) is used in Mumbai, Delhi, Bengaluru, Kolkata. EST (Eastern Standard Time) is used in New York, Toronto, Miami, Atlanta. Some cities inside a zone skip daylight saving, noted in parentheses, so their offset matches only part of the year.