GMT to IST Time Converter
Convert Greenwich Mean Time to India Standard Time instantly.
Scroll the timeline to check any hour of the day.
Search any city, build a custom world clock, and plan across more time zones and options in the FlutterTime app. Free.
How the GMT to IST time difference works
IST is 5 hours 30 minutes ahead of GMT. Greenwich Mean Time (GMT) is the fixed UTC+0 reference time, used by the United Kingdom and Ireland in winter.
India Standard Time (IST) is the time zone of India and Sri Lanka.
For example, 9:00 AM GMT is 2:30 PM IST.
Scroll the timeline above to convert any moment, or use the chart below for a quick reference.
Time difference
5 hours 30 minutes
GMT to IST conversion chart
| Greenwich Mean Time (GMT) |
India Standard Time (IST) |
| 12:00 AM |
5:30 AM |
| 1:00 AM |
6:30 AM |
| 2:00 AM |
7:30 AM |
| 3:00 AM |
8:30 AM |
| 4:00 AM |
9:30 AM |
| 5:00 AM |
10:30 AM |
| 6:00 AM |
11:30 AM |
| 7:00 AM |
12:30 PM |
| 8:00 AM |
1:30 PM |
| 9:00 AM |
2:30 PM |
| 10:00 AM |
3:30 PM |
| 11:00 AM |
4:30 PM |
| 12:00 PM |
5:30 PM |
| 1:00 PM |
6:30 PM |
| 2:00 PM |
7:30 PM |
| 3:00 PM |
8:30 PM |
| 4:00 PM |
9:30 PM |
| 5:00 PM |
10:30 PM |
| 6:00 PM |
11:30 PM |
| 7:00 PM |
12:30 AM +1 day |
| 8:00 PM |
1:30 AM +1 day |
| 9:00 PM |
2:30 AM +1 day |
| 10:00 PM |
3:30 AM +1 day |
| 11:00 PM |
4:30 AM +1 day |
Best time to meet
A standard 9 to 5 workday overlaps from 9:00 AM to 11:30 AM GMT (2:30 PM to 5:00 PM IST). Schedule inside that window to catch both coasts during business hours.
Cities in each time zone
Greenwich Mean Time (GMT)
LondonDublinLisbonEdinburghManchester
India Standard Time (IST)
MumbaiDelhiBengaluruKolkataChennaiHyderabad
GMT to IST questions
Is IST ahead of or behind GMT?
IST is 5 hours 30 minutes ahead of GMT. So 9:00 AM GMT is 2:30 PM IST, and 5:00 PM GMT is 10:30 PM IST.
What time is it in IST when it is 12:00 PM GMT?
When it is 12:00 PM (noon) GMT in Greenwich Mean Time, it is 5:30 PM IST in India Standard Time.
How many hours difference is there between GMT and IST?
There is a 5 hours 30 minutes difference. India Standard Time (IST) runs 5 hours 30 minutes ahead of Greenwich Mean Time (GMT).
Do GMT and IST observe daylight saving time?
Neither Greenwich Mean Time nor India Standard Time shifts its clocks for daylight saving time, so the 5 hours 30 minutes difference between them is the same all year. The United Kingdom and Ireland use GMT only in winter; from late March to late October they switch to British Summer Time (BST), one hour ahead of GMT.
What is the best time to schedule a meeting between GMT and IST?
A standard 9-to-5 workday overlaps from 9:00 AM to 11:30 AM GMT (2:30 PM to 5:00 PM IST). Scheduling inside that window keeps the call during business hours in both Greenwich Mean Time and India Standard Time.
Which cities use GMT and IST?
Greenwich Mean Time (GMT) covers cities such as London, Dublin, Lisbon, Edinburgh, Manchester. India Standard Time (IST) covers cities such as Mumbai, Delhi, Bengaluru, Kolkata, Chennai, Hyderabad.
Related conversions
