IST to GMT Time Zone Converter
GMT is currently 4 hours and 30 minutes behind IST.
IST (India Standard Time, UTC+05:30 standard)
→
GMT (Greenwich Mean Time / BST, UTC+00:00 standard)
IST to GMT — 24-Hour Conversion Table
Shows standard (non-DST) offsets. Green rows = shared 09:00–17:00 business hours.
| Time in IST | Time in GMT |
|---|---|
| 00:00 | 18:30 |
| 01:00 | 19:30 |
| 02:00 | 20:30 |
| 03:00 | 21:30 |
| 04:00 | 22:30 |
| 05:00 | 23:30 |
| 06:00 | 00:30 |
| 07:00 | 01:30 |
| 08:00 | 02:30 |
| 09:00 | 03:30 |
| 10:00 | 04:30 |
| 11:00 | 05:30 |
| 12:00 | 06:30 |
| 13:00 | 07:30 |
| 14:00 | 08:30 |
| 15:00 | 09:30 overlap |
| 16:00 | 10:30 overlap |
| 17:00 | 11:30 |
| 18:00 | 12:30 |
| 19:00 | 13:30 |
| 20:00 | 14:30 |
| 21:00 | 15:30 |
| 22:00 | 16:30 |
| 23:00 | 17:30 |
Daylight Saving Time: IST and GMT
IST — India Standard Time
No DST — fixed offset
Year-round: UTC+05:30
GMT — Greenwich Mean Time / BST
Observes DST
Standard: UTC+00:00
DST: UTC+01:00
2026: forward 2026-03-29 · back 2026-10-25
DST: UTC+01:00
2026: forward 2026-03-29 · back 2026-10-25