What is the time difference between GMT and IST?

GMT (Greenwich Mean Time) is +4h 30m behind/ahead of IST (India Standard Time). The exact difference depends on Daylight Saving Time status in both timezones.

How do I convert GMT to IST?

Use our free converter above. Select Greenwich Mean Time as the source timezone and India Standard Time as the destination, enter the time you want to convert, and click Convert. Our tool automatically handles DST.

What is the best time to schedule a meeting between Greenwich Mean Time and India Standard Time?

The best meeting time typically falls during overlapping business hours (9 AM - 5 PM). Use our meeting planner table below to find overlapping hours between GMT and IST.

Does GMT or IST observe Daylight Saving Time?

Our converter automatically detects DST status for both timezones. The result will show DST indicators when Daylight Saving Time is active.

GMT to IST Converter

Convert Greenwich Mean Time (GMT) to India Standard Time (IST) instantly. Convert any timezone or plan a meeting.

From (GMT)

To (IST)

Time to Convert

Leave date empty to use current date

Time Difference

+4h 30m

GMT is +4h 30m behind/ahead of IST.

GMT → IST Conversion Table

GMT (Greenwich Mean Time)	IST (India Standard Time)
Jul 15 01:00	05:30
04:00	08:30
07:00	11:30
10:00	14:30
13:00	17:30
16:00	20:30
19:00	23:30
22:00	02:30

Best Meeting Times

Hours where both timezones are within business hours (9 AM - 5 PM) are highlighted in green.

GMT (Greenwich Mean Time)

01:00

02:00

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11:00

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17:00

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23:00

00:00

IST (India Standard Time)