IST to GMT Time Converter
Convert Indian Standard Time (IST) to Greenwich Mean Time (GMT) instantly. Perfect for India-UK coordination.
Time Difference5.5 hours (IST ahead)
IST TimezoneGMT+5:30 (Asia/Kolkata)
GMT TimezoneGMT+0 (UTC)
During DST5.5 hours (constant)
About IST to GMT Time Conversion
IST is 5 hours and 30 minutes ahead of GMT. When it's noon in India, it's 6:30 AM GMT.
Common Time Conversions
| IST |
GMT |
| 12:00 AM (Midnight) | 6:30 PM (Previous day) |
| 6:00 AM | 12:30 AM |
| 12:00 PM (Noon) | 6:30 AM |
| 6:00 PM | 12:30 PM |
Best Times for Calls
Optimal Business Hours Overlap
The best time for calls is 1:30 PM - 6:30 PM IST, which corresponds to 8:00 AM - 1:00 PM GMT.
- Team meetings and collaboration
- Client presentations
- Project updates
- Business coordination
Related Time Conversions