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EST to IST Converter

Convert EST to IST instantly. IST is 10.5 hours ahead of EST (9.5 during US DST). Plan US–India meetings, calls, and deadlines. Free, no signup.

Date
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Convert between Eastern Standard Time (EST/EDT, UTC-5/-4) and India Standard Time (IST, UTC+5:30). The difference is 10.5 hours during US winter (EST) and 9.5 hours during US summer (EDT, mid-March to early November). This is one of the most-searched timezone conversions in the world because of how tightly US East Coast offices coordinate with Indian engineering, support, and BPO teams — billions of dollars of work flow across this exact time gap every day. Use this converter to schedule overlap windows, set meeting times, plan handoffs between night and day shifts, and avoid the classic mistake of booking a 9 AM Bangalore call that lands at 11:30 PM in New York.

Tips for EST to IST Converter

1

IST is 10.5 hours ahead of EST (Nov–Mar) and 9.5 hours ahead during EDT (Mar–Nov)

2

India does NOT observe daylight saving — IST is constant year-round at UTC+5:30

3

Best overlap for US East Coast – India meetings: 8:30–10 AM EST = 7–8:30 PM IST

4

Reverse overlap: 8–9:30 PM EST = 6:30–8 AM IST (next day) — convenient for late-evening US calls

5

US DST starts on the 2nd Sunday of March and ends on the 1st Sunday of November — the gap drops to 9.5 hours during this window

6

When the US shifts to daylight time, calls that were 9 AM IST → 11:30 PM EST yesterday now happen at 10:30 PM EST — easy to miss

7

Bangalore, Mumbai, Delhi, Hyderabad, Chennai, Pune, Kolkata, Ahmedabad all use IST — there is only one time zone in India

8

Outlook, Google Calendar, and Slack handle DST automatically — but spreadsheets and manual schedules don't

Frequently Asked Questions

What is the time difference between EST and IST?
IST is 10 hours and 30 minutes ahead of EST. When it's 9:00 AM in New York (EST), it's 7:30 PM in India (IST). During US daylight saving (EDT, mid-March to early November), the difference is 9 hours and 30 minutes.
What time is 9 AM EST in India?
9:00 AM EST = 7:30 PM IST (same day). During EDT (US summer), 9:00 AM EDT = 6:30 PM IST. This is a popular meeting slot because it covers the late afternoon in India — still business hours for both teams.
What time is 6 PM IST in EST?
6:00 PM IST = 7:30 AM EST (same day). During EDT, 6:00 PM IST = 8:30 AM EDT. This is the start of the US East Coast business day — useful for India teams wrapping up to brief US colleagues coming online.
Does India observe daylight saving time?
No. India Standard Time (IST) is constant year-round at UTC+5:30. India considered DST during the 1962 China war and again in 2002 but decided against it due to the country's east-west span being small relative to a single time zone.
What is the best meeting time for US East Coast and India teams?
8:30–10 AM EST works best — that's 7:00–8:30 PM IST, still within India business hours. For longer overlap, 8 AM EST gives 6:30 PM IST start. Many US-India teams settle on weekly 9 AM EST / 7:30 PM IST standups.
How do I avoid the DST confusion when scheduling EST–IST meetings?
Always schedule in calendar apps (Outlook, Google Calendar) that auto-adjust for DST — never in a spreadsheet or manual table. Set your home timezone correctly in your OS. Mention the time in both zones in invites: '9:00 AM EST / 7:30 PM IST'.
Is EST the same as EDT?
No. EST (Eastern Standard Time, UTC-5) applies November–March. EDT (Eastern Daylight Time, UTC-4) applies March–November. Most US East Coast residents say 'EST' year-round, but technically the correct abbreviation depends on the date. Calendar apps use 'ET' to mean either.
What cities use EST?
New York, Boston, Philadelphia, Washington D.C., Atlanta, Miami, Toronto, Montreal, Indianapolis, Detroit, Charlotte, and most of the US East Coast and eastern Canada. All shift to EDT in summer.
Last updated: May 2026

Data sources: Standard mathematical formulas

For informational purposes only. Not financial, medical, or legal advice. Always consult a qualified professional for decisions affecting your finances or health.

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