IST to GMT Converter
India Standard Time to UK Time: live clocks, today's full conversion table, and the best hours to call. Daylight saving is handled automatically.
About IST and GMT
India Standard Time (IST) is used across all of India, including Mumbai, Delhi, Bengaluru, Chennai and Kolkata. India does not observe daylight saving time.
UK Time (GMT/BST) is used in London, Manchester and Edinburgh. Clocks shift to BST (British Summer Time) from late March to late October.
Time difference between IST and GMT
GMT is 5 hours 30 minutes behind IST in winter (January) and 4 hours 30 minutes behind IST in summer (July), because of daylight saving changes. The clocks and table above are computed live from the official IANA time zone database in your browser, so daylight saving transitions are always already included.
IST to GMT conversion for every hour
9:00 AM IST is 3:30 AM GMT. 10:00 AM IST is 4:30 AM GMT. 12:00 PM IST is 6:30 AM GMT. 2:00 PM IST is 8:30 AM GMT. 3:00 PM IST is 9:30 AM GMT. 4:00 PM IST is 10:30 AM GMT. 5:00 PM IST is 11:30 AM GMT. The table at the top of this page lists all 24 hours, updated live for today's date.
Best hours for meetings
Scan the table for rows where both sides land inside working hours (9:00 to 18:00). Rows where one side is early morning or late evening are workable for a quick call; avoid rows where either side is in the middle of the night. To add a third city, type it into the planner below, or open the full time zone converter and meeting planner.
Related conversions
GMT to IST IST to EST EST to IST IST to PST PST to IST IST to CST CST to IST IST to MST