IST to BST Time Converter
Compare IST and BST instantly. The clocks below stay in sync with the IANA time-zone database, so daylight-saving transitions are handled automatically for both India and London.
24-Hour Comparison Timeline
Green = working hours · Yellow = early/late · Red = night
24-hour reference table
| IST (India) | BST (London) |
|---|---|
| 12:00 AM | 07:30 PM(Fri, Jul 24) |
| 01:00 AM | 08:30 PM(Fri, Jul 24) |
| 02:00 AM | 09:30 PM(Fri, Jul 24) |
| 03:00 AM | 10:30 PM(Fri, Jul 24) |
| 04:00 AM | 11:30 PM(Fri, Jul 24) |
| 05:00 AM | 12:30 AM |
| 06:00 AM | 01:30 AM |
| 07:00 AM | 02:30 AM |
| 08:00 AM | 03:30 AM |
| 09:00 AM | 04:30 AM |
| 10:00 AM | 05:30 AM |
| 11:00 AM | 06:30 AM |
| 12:00 PM | 07:30 AM |
| 01:00 PM | 08:30 AM |
| 02:00 PM | 09:30 AM |
| 03:00 PM | 10:30 AM |
| 04:00 PM | 11:30 AM |
| 05:00 PM | 12:30 PM |
| 06:00 PM | 01:30 PM |
| 07:00 PM | 02:30 PM |
| 08:00 PM | 03:30 PM |
| 09:00 PM | 04:30 PM |
| 10:00 PM | 05:30 PM |
| 11:00 PM | 06:30 PM |
Daylight saving time
London observes daylight saving time; India does not. Expect a one-hour swing when London starts or ends DST.
Working-hours overlap
2 PM–5 PM IST (9 AM–12 PM BST) — the shared 9-to-5 window for meetings.
Frequently asked questions
What is the time difference between IST and BST?+
BST (UTC+01:00) is currently 4 hours 30 minutes behind IST (UTC+05:30). This page recalculates the offset live from the IANA time-zone database, including any daylight-saving transitions.
Does IST or BST observe daylight saving time?+
London observes daylight saving time; India does not, so the gap changes when London springs forward or falls back. Times on this page always reflect the current local rules.
What are the best meeting hours between India and London?+
Standard 9–5 working hours in India and London overlap from 2 PM to 5 PM IST (9 AM–12 PM BST). Schedule calls inside this window to keep both sides in normal business hours.
How do I quickly convert IST to BST?+
Use the live clocks and 24-hour reference table above. Pick any hour on the IST row to see the matching BST time. The Event Planner also lets you pick a specific date and share it with attendees.