BST to IST Time Converter
Compare BST and IST instantly. The clocks below stay in sync with the IANA time-zone database, so daylight-saving transitions are handled automatically for both London and India.
24-Hour Comparison Timeline
Green = working hours · Yellow = early/late · Red = night
24-hour reference table
| BST (London) | IST (India) |
|---|---|
| 12:00 AM | 04:30 AM |
| 01:00 AM | 05:30 AM |
| 02:00 AM | 06:30 AM |
| 03:00 AM | 07:30 AM |
| 04:00 AM | 08:30 AM |
| 05:00 AM | 09:30 AM |
| 06:00 AM | 10:30 AM |
| 07:00 AM | 11:30 AM |
| 08:00 AM | 12:30 PM |
| 09:00 AM | 01:30 PM |
| 10:00 AM | 02:30 PM |
| 11:00 AM | 03:30 PM |
| 12:00 PM | 04:30 PM |
| 01:00 PM | 05:30 PM |
| 02:00 PM | 06:30 PM |
| 03:00 PM | 07:30 PM |
| 04:00 PM | 08:30 PM |
| 05:00 PM | 09:30 PM |
| 06:00 PM | 10:30 PM |
| 07:00 PM | 11:30 PM |
| 08:00 PM | 12:30 AM(Sun, Jul 26) |
| 09:00 PM | 01:30 AM(Sun, Jul 26) |
| 10:00 PM | 02:30 AM(Sun, Jul 26) |
| 11:00 PM | 03:30 AM(Sun, Jul 26) |
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
9 AM–1 PM BST (1 PM–5 PM IST) — the shared 9-to-5 window for meetings.
Frequently asked questions
What is the time difference between BST and IST?+
IST (UTC+05:30) is currently 4 hours 30 minutes ahead of BST (UTC+01:00). This page recalculates the offset live from the IANA time-zone database, including any daylight-saving transitions.
Does BST or IST 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 London and India?+
Standard 9–5 working hours in London and India overlap from 9 AM to 1 PM BST (1 PM–5 PM IST). Schedule calls inside this window to keep both sides in normal business hours.
How do I quickly convert BST to IST?+
Use the live clocks and 24-hour reference table above. Pick any hour on the BST row to see the matching IST time. The Event Planner also lets you pick a specific date and share it with attendees.