IST to GMT Converter – India Standard Time to Greenwich Mean Time
GMT is 5 hours 30 minutes behind IST. IST (India Standard Time) is UTC+5:30 all year, while GMT (Greenwich Mean Time) is UTC+0, switching to BST (UTC+1) during daylight saving. The live clocks below show the current time in both zones, updated every second.
IST to GMT Conversion Table (Hour by Hour)
Standard-time conversion from India Standard Time to Greenwich Mean Time. During daylight saving periods the offset shifts by one hour - the live clocks above always show the correct current time.
| IST (UTC+5:30) | GMT (UTC+0) |
|---|---|
| 12:00 AM | 6:30 PM (previous day) |
| 1:00 AM | 7:30 PM (previous day) |
| 2:00 AM | 8:30 PM (previous day) |
| 3:00 AM | 9:30 PM (previous day) |
| 4:00 AM | 10:30 PM (previous day) |
| 5:00 AM | 11:30 PM (previous day) |
| 6:00 AM | 12:30 AM |
| 7:00 AM | 1:30 AM |
| 8:00 AM | 2:30 AM |
| 9:00 AM | 3:30 AM |
| 10:00 AM | 4:30 AM |
| 11:00 AM | 5:30 AM |
| 12:00 PM | 6:30 AM |
| 1:00 PM | 7:30 AM |
| 2:00 PM | 8:30 AM |
| 3:00 PM | 9:30 AM |
| 4:00 PM | 10:30 AM |
| 5:00 PM | 11:30 AM |
| 6:00 PM | 12:30 PM |
| 7:00 PM | 1:30 PM |
| 8:00 PM | 2:30 PM |
| 9:00 PM | 3:30 PM |
| 10:00 PM | 4:30 PM |
| 11:00 PM | 5:30 PM |
Frequently Asked Questions
What is the time difference between IST and GMT?
GMT is 5 hours 30 minutes behind IST. IST (India Standard Time) is UTC+5:30 and GMT (Greenwich Mean Time) is UTC+0.
How do I convert IST to GMT?
Take your time in IST and subtract 5.5 hours and minutes as shown in the table above. For example, 9:00 AM IST is 3:30 AM in GMT. The live clocks at the top of this page always show the current conversion.
Does daylight saving time affect IST to GMT conversion?
Yes. GMT switches to BST (UTC+1) in summer, so the gap between the two zones changes during DST periods. The live clocks on this page use the IANA timezone database and always reflect the correct current offset automatically.
What is the best time for a meeting between IST and GMT?
Look for overlap between 9:00 AM-6:00 PM working hours in both zones using the conversion table above. GMT is 5 hours 30 minutes behind IST, so there is normally several hours of business-hours overlap.