London Time to IST Converter
IST is 5 hours 30 minutes ahead of GMT. 9:00 AM GMT = 2:30 PM IST.
IST is 5 hours 30 minutes ahead of GMT at the moment. To convert London Time to IST, add 5 hours 30 minutes to the London Time time: 9:00 AM GMT = 2:30 PM IST.
London Time (London time) is used in London, UK. IST (India Time) is used in India and Sri Lanka (UTC+5:30, no daylight saving time).
IST here means India Standard Time, not Irish or Israel Standard Time.
London Time to IST time conversion table
London Time to IST on 7 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| London Time | IST | Day |
|---|---|---|
| 12:00 AM GMT | 5:30 AM IST | night |
| 1:00 AM GMT | 6:30 AM IST | — |
| 2:00 AM GMT | 7:30 AM IST | — |
| 3:00 AM GMT | 8:30 AM IST | — |
| 4:00 AM GMT | 9:30 AM IST | — |
| 5:00 AM GMT | 10:30 AM IST | — |
| 6:00 AM GMT | 11:30 AM IST | — |
| 7:00 AM GMT | 12:30 PM IST | — |
| 8:00 AM GMT | 1:30 PM IST | — |
| 9:00 AM GMT | 2:30 PM IST | work hours |
| 10:00 AM GMT | 3:30 PM IST | work hours |
| 11:00 AM GMT | 4:30 PM IST | work hours |
| 12:00 PM GMT | 5:30 PM IST | — |
| 1:00 PM GMT | 6:30 PM IST | — |
| 2:00 PM GMT | 7:30 PM IST | — |
| 3:00 PM GMT | 8:30 PM IST | — |
| 4:00 PM GMT | 9:30 PM IST | — |
| 5:00 PM GMT | 10:30 PM IST | night |
| 6:00 PM GMT | 11:30 PM IST | night |
| 7:00 PM GMT | 12:30 AM IST | next day |
| 8:00 PM GMT | 1:30 AM IST | next day |
| 9:00 PM GMT | 2:30 AM IST | next day |
| 10:00 PM GMT | 3:30 AM IST | next day |
| 11:00 PM GMT | 4:30 AM IST | next day |
- Work rows — 9 AM–5 PM in both places
- Night in the destination (10 PM–6 AM)
How to convert London Time to IST
Add 5 hours 30 minutes to the London Time time to get IST.
Example: 9:00 AM GMT = 2:30 PM IST.
Across midnight: 10:00 PM GMT = 3:30 AM IST (next day). The date changes, so always check the day as well as the hour.
Time difference between London Time and IST
The time difference between London Time and IST is not the same all year, because the two sides change for daylight saving time on different dates. In 2026 it works out like this:
- 1 Jan 2026 – 28 Mar 2026: IST is 5 hours 30 minutes ahead of London Time.
- 29 Mar 2026 – 24 Oct 2026: IST is 4 hours 30 minutes ahead of London Time.
- 25 Oct 2026 – 31 Dec 2026: IST is 5 hours 30 minutes ahead of London Time.
London Time and IST during daylight saving time
- London Time next changes on 28 Mar 2027: clocks go forward one hour at 00:59 local time, from GMT (UTC+0) to BST (UTC+1).
- IST does not observe daylight saving time; it stays on UTC+5:30 all year.
Best time for a meeting between London Time and IST
London Time and IST share 2 hours 30 minutes of the 9 AM–5 PM working day. Any time between 9:00 AM and 11:30 AM GMT lands between 2:30 PM and 5:00 PM IST, inside working hours for both.
London Time to IST FAQ
What is the time difference between London Time and IST?
Right now IST is 5 hours 30 minutes ahead of GMT. The gap changes 3 times in 2026 because the two sides switch to daylight saving time on different dates.
What is 9 AM London Time in IST?
9:00 AM GMT is 2:30 PM IST.
What is 12 PM (noon) London Time in IST?
12:00 PM GMT is 5:30 PM IST.
Is IST ahead of or behind London Time?
IST is 5 hours 30 minutes ahead of GMT, so it is later in IST than in London Time.
Does London Time change for daylight saving time?
Yes. London Time next changes on 28 Mar 2027, when clocks go forward one hour from GMT to BST.
Does IST change for daylight saving time?
No. IST stays on the same offset all year, so conversions never shift for daylight saving time.
What is the best time for a meeting between London Time and IST?
London Time and IST share 2 hours 30 minutes of the 9 AM–5 PM working day. Any time between 9:00 AM and 11:30 AM GMT lands between 2:30 PM and 5:00 PM IST, inside working hours for both.
Related conversions
Convert IST to London Time
Convert London Time to other time zones
Convert other time zones to IST
Learn more
Updated 7 November 2026. Time zone data: IANA tz database.