IST to EST Time Converter

Convert Indian Standard Time to Eastern Standard Time - Quick & Accurate

Mumbai (IST)
New York (EST)
EST is 10 hours 30 minutes behind IST (9:30 during EDT)

Quick Time Conversion

Mumbai
Indian Standard Time
UTC+5:30
New York
Eastern Standard Time
UTC-5 (EST) / UTC-4 (EDT)

Current Time Right Now

Indian Standard Time
Eastern (EST/EDT)

Updates live every second

24-Hour Visual Comparison

IST (Mumbai)
12am IST
1am IST
2am IST
3am IST
4am IST
5am IST
6am IST
7am IST
8am IST
9am IST
10am IST
11am IST
12pm IST
1pm IST
2pm IST
3pm IST
4pm IST
5pm IST
6pm IST
7pm IST
8pm IST
9pm IST
10pm IST
11pm IST
12a6a12p6p12a
EST (NY)
1pm EST
2pm EST
3pm EST
4pm EST
5pm EST
6pm EST
7pm EST
8pm EST
9pm EST
10pm EST
11pm EST
12am EST
1am EST
2am EST
3am EST
4am EST
5am EST
6am EST
7am EST
8am EST
9am EST
10am EST
11am EST
12pm EST
1:30p7:30p1:30a7:30a1:30p
Business Hours (9AM-5PM)
Evening (5PM-9PM)
Night (9PM-6AM)

Hover over any hour to see corresponding time in both zones

Best Time for Meeting/Call

To schedule a meeting between IST and EST:

Best Window (IST)
6:30 PM - 11:00 PM
Which is (EST)
8:00 AM - 12:30 PM
Both parties in business hours
4.5-hour overlap window
Ideal for India-US collaboration

Pro Tip: Schedule calls between 7:00 PM - 9:00 PM IST for maximum overlap with EST business hours

Complete IST to EST Conversion Table

IST TimeEST TimeContext
12:00 AM01:30 PM
Midnight IST
01:00 AM02:30 PM
Late Night
02:00 AM03:30 PM
Late Night
03:00 AM04:30 PM
Late Night
04:00 AM05:30 PM
Late Night
05:00 AM06:30 PM
Late Night
06:00 AM07:30 PM
Early Morning IST
07:00 AM08:30 PM
Night Time
08:00 AM09:30 PM
Work Starts IST
09:00 AM10:30 PM
Business Hours IST
10:00 AM11:30 PM
Business Hours IST
11:00 AM12:30 AM
Business Hours IST

Indian Standard Time (IST)

UTC+5:30
No daylight saving time
Major Cities:
  • • Mumbai
  • • Delhi
  • • Bangalore
  • • Hyderabad
  • • Chennai
Daylight Saving:

Not observed

IANA Identifier:

Asia/Kolkata

Eastern Standard Time (EST)

UTC-5
UTC-4 during EDT
Major Cities:
  • • New York
  • • Miami
  • • Atlanta
  • • Boston
  • • Philadelphia
Daylight Saving:

EDT (UTC-4) from March to November

IANA Identifier:

America/New_York

Indian Standard Time (IST) vs Eastern Standard Time (EST)

Indian Standard Time (IST)Eastern Standard Time (EST)

Indian Standard Time (IST) is 5 hours and 30 minutes ahead of Coordinated Universal Time (UTC+5:30). India does not observe daylight saving time and maintains a single time zone throughout the country.

Eastern Standard Time (EST) is 5 hours behind Coordinated Universal Time (UTC-5). During daylight saving time, the region observes Eastern Daylight Time (EDT), which is UTC-4.

Where Is It Used?

  • India: Entire country uses IST
  • Major Cities: Mumbai, Delhi, Bangalore, Hyderabad, Chennai, Kolkata, Pune, Ahmedabad
  • Population: Over 1.4 billion people
  • Note: Single time zone for entire nation
  • United States: New York, Florida, Georgia, Pennsylvania, Ohio, Michigan, Virginia, North Carolina, Massachusetts
  • Canada: Ontario, Quebec, Nunavut (eastern portions)
  • Caribbean: Bahamas, Jamaica, Haiti, Cayman Islands
  • South America: Panama, Colombia, Peru, Ecuador

Key Facts

  • UTC Offset: UTC+5:30 (year-round)
  • Region: South Asia
  • Known For: Major tech outsourcing hub
  • Largest Cities: Mumbai (20M metro), Delhi (32M metro), Bangalore (13M metro)
  • Unique: 30-minute offset from UTC
  • Daylight Saving: Not observed
  • UTC Offset: UTC-5 (EST) / UTC-4 (EDT)
  • Region: Most populous time zone in North America
  • Known For: Major financial and cultural centers
  • Largest Cities: New York City (8.3M), Toronto (2.9M), Philadelphia (1.6M)
  • Coverage: Approximately 45% of US population
  • Daylight Saving: Begins 2nd Sunday in March, ends 1st Sunday in November

Quick Reference

Time Difference: EST is 10 hours 30 minutes behind IST (9 hours 30 minutes during EDT)
Variability: Difference changes by 1 hour when US observes DST (India does not observe DST)
Distance: Approximately 7,800 miles between Mumbai and New York
UTC Offsets: IST = UTC+5:30 | EST = UTC-5, EDT = UTC-4 (during DST)
2025 DST (US only): Starts March 9 at 2:00 AM, Ends November 2 at 2:00 AM

Frequently Asked Questions

EST (Eastern Standard Time) is 10 hours and 30 minutes behind IST (Indian Standard Time). During EDT (Eastern Daylight Time), the difference is 9 hours and 30 minutes.

The best time to call from IST to EST is between 6:30 PM and 11:00 PM IST, which corresponds to 8:00 AM to 12:30 PM EST. This ensures both parties are within standard business hours.

Yes, the time difference changes when the US observes Daylight Saving Time. During EDT, EST is 9 hours 30 minutes behind IST instead of 10 hours 30 minutes. India does not observe DST.

IST cities include Mumbai, Delhi, Bangalore, Hyderabad, and Kolkata. EST cities include New York, Miami, Atlanta, Boston, and Philadelphia.

India chose UTC+5:30 to have a single time zone for the entire country while being close to the mean solar time for the central meridian of India, which passes through Allahabad.

Related Time Converters

EST → ISTIST → PSTIST → GMTIST → CSTEST → PSTPST → ESTGMT → ESTView All