GMT to IST Converter
IST is 5 hours and 30 minutes ahead of GMT
GMT to IST Conversion Table
Green rows indicate standard business hours (9 AM – 5 PM) in IST
| GMT | IST |
|---|---|
| 12:00 AM | 5:30 AM |
| 1:00 AM | 6:30 AM |
| 2:00 AM | 7:30 AM |
| 3:00 AM | 8:30 AM |
| 4:00 AM | 9:30 AM |
| 5:00 AM | 10:30 AM |
| 6:00 AM | 11:30 AM |
| 7:00 AM | 12:30 PM |
| 8:00 AM | 1:30 PM |
| 9:00 AM | 2:30 PM |
| 10:00 AM | 3:30 PM |
| 11:00 AM | 4:30 PM |
| 12:00 PM | 5:30 PM |
| 1:00 PM | 6:30 PM |
| 2:00 PM | 7:30 PM |
| 3:00 PM | 8:30 PM |
| 4:00 PM | 9:30 PM |
| 5:00 PM | 10:30 PM |
| 6:00 PM | 11:30 PM |
| 7:00 PM | 12:30 AM +1d |
| 8:00 PM | 1:30 AM +1d |
| 9:00 PM | 2:30 AM +1d |
| 10:00 PM | 3:30 AM +1d |
| 11:00 PM | 4:30 AM +1d |
Converting Greenwich Mean Time to India Standard Time
Greenwich Mean Time (GMT) and India Standard Time (IST) are separated by a 5 hours and 30 minutes time difference. IST is 5 hours and 30 minutes ahead of GMT. GMT is UTC+0, used in United Kingdom, Ireland, Portugal, while IST is UTC+5:30, used in India, Sri Lanka.
When converting from GMT to IST, the key reference points to remember are: 9:00 AM GMT equals 2:30 PM IST, 12:00 PM noon GMT equals 5:30 PM IST, and 5:00 PM GMT equals 10:30 PM IST. The conversion table above shows every hour of the day mapped between these two time zones.
Scheduling Across GMT and IST
For professionals scheduling meetings between GMT and IST, finding overlapping business hours is essential. Standard business hours are typically 9:00 AM to 5:00 PM in each time zone. Given the 5 hours and 30 minutes difference, the window of overlap may be limited. Use the highlighted working hours in the conversion table above to quickly identify suitable meeting times.
Daylight Saving Time Considerations
GMT observes Daylight Saving Time, switching to BST (UTC+1) during summer months. IST does not observe DST, staying at UTC+5:30 year-round. During DST transitions, the time difference between these zones may temporarily change by 1 hour. Always verify the current offset during spring and fall transition periods.