GMT to IST Time Converter
About this conversion
IST here means India Standard Time (UTC+5:30). The abbreviation is also used for Irish Standard Time (UTC+1, the Republic of Ireland's summer time) and Israel Standard Time, so always confirm which country is meant.
When the time difference changes
Both sides keep a fixed offset, so the gap does not change in the next two years.
Best time to call or meet
09:00 to 12:00 GMT is 14:00 to 17:00 IST, 3 hours of shared 09:00 to 17:00 time.
Common times
- 06:00 GMT = 11:30 IST
- 09:00 GMT = 14:30 IST
- 12:00 GMT = 17:30 IST
- 15:00 GMT = 20:30 IST
- 17:00 GMT = 22:30 IST
- 20:00 GMT = 01:30 IST (next day)
GMT to IST hour-by-hour table
Highlighted rows fall within 09:00 to 17:00 on both sides.
| GMT | IST |
|---|---|
| 00:00 | 05:30 |
| 01:00 | 06:30 |
| 02:00 | 07:30 |
| 03:00 | 08:30 |
| 04:00 | 09:30 |
| 05:00 | 10:30 |
| 06:00 | 11:30 |
| 07:00 | 12:30 |
| 08:00 | 13:30 |
| 09:00 | 14:30 |
| 10:00 | 15:30 |
| 11:00 | 16:30 |
| 12:00 | 17:30 |
| 13:00 | 18:30 |
| 14:00 | 19:30 |
| 15:00 | 20:30 |
| 16:00 | 21:30 |
| 17:00 | 22:30 |
| 18:00 | 23:30 |
| 19:00 | 00:30 (next day) |
| 20:00 | 01:30 (next day) |
| 21:00 | 02:30 (next day) |
| 22:00 | 03:30 (next day) |
| 23:00 | 04:30 (next day) |
Related conversions
Clock change guides
- What Is Daylight Saving Time (DST)? A Plain-English GuideWhat daylight saving time is, how it works in the UK, Europe and the US, why it exists, its history, who uses it and the argument over scrapping it.
- Why Do the Clocks Go Back in October? The Real ReasonThe clocks go back in autumn to return the UK to GMT, so winter mornings are lighter. The history, the rule, what time it happens and what changes for you.
- When Do the Clocks Go Forward Again After Going Back?When the UK clocks go forward again after the autumn change, how long the UK stays on GMT, when evenings get lighter and how to remember to reset your clocks.
Frequently asked questions
What is 15:00 GMT in IST?
15:00 GMT is 20:30 IST at the moment. The answer can change by an hour when either side changes its clocks.
What are the shared working hours for GMT and IST?
09:00 to 12:00 GMT is 14:00 to 17:00 IST, 3 hours of shared 09:00 to 17:00 time.
When does the GMT to IST time difference change?
It does not change in the next two years.