GMT to IST converter
GMT never changes for daylight saving time, and neither does India Standard Time, so this gap stays the same all year.
Convert Greenwich Mean Time (GMT) to India Standard Time (IST) for any date and time.
India Standard Time is 5 hours 30 minutes ahead of GMT all year.
Right now GMT is UTC+0 and IST is UTC+5:30. Neither changes its clocks, so this never changes.
9:00 am to 5:00 pm GMT is 2:30 pm to 10:30 pm IST.
- 8:00 am GMT is 1:30 pm IST
- 9:00 am GMT is 2:30 pm IST
- 10:00 am GMT is 3:30 pm IST
- 12:00 pm GMT is 5:30 pm IST
- 3:00 pm GMT is 8:30 pm IST
- 5:00 pm GMT is 10:30 pm IST
Hours in Greenwich Mean Time, Fri, Oct 23
Greenwich Mean Time
UTC+0 all year; the UK switches to BST in summer
Fri, Oct 23
GMT · UTC+0ReferenceWorking hoursIndia Standard Time
India
Fri, Oct 23
IST · UTC+5:30+5h 30m from Greenwich Mean TimeWorking hours
Best time to meet: 9:00 AM–11:00 AM in Greenwich Mean Time on Fri, Oct 23, when everyone is inside working hours.
Book a meeting in this windowWorking hours: 9:00 AM–5:00 PM, Monday to FridayEveryone at work
GMT to IST conversion table
Every hour of the day in GMT, converted to IST. Shaded cells are working hours (9:00 am to 5:00 pm); green rows are working hours in both zones.
| GMT | IST |
|---|---|
| 12:00 am GMT | 5:30 am IST |
| 1:00 am GMT | 6:30 am IST |
| 2:00 am GMT | 7:30 am IST |
| 3:00 am GMT | 8:30 am IST |
| 4:00 am GMT | 9:30 am IST |
| 5:00 am GMT | 10:30 am IST |
| 6:00 am GMT | 11:30 am IST |
| 7:00 am GMT | 12:30 pm IST |
| 8:00 am GMT | 1:30 pm IST |
| 9:00 am GMT | 2:30 pm IST |
| 10:00 am GMT | 3:30 pm IST |
| 11:00 am GMT | 4:30 pm IST |
| 12:00 pm GMT | 5:30 pm IST |
| 1:00 pm GMT | 6:30 pm IST |
| 2:00 pm GMT | 7:30 pm IST |
| 3:00 pm GMT | 8:30 pm IST |
| 4:00 pm GMT | 9:30 pm IST |
| 5:00 pm GMT | 10:30 pm IST |
| 6:00 pm GMT | 11:30 pm IST |
| 7:00 pm GMT | 12:30 am IST(next day) |
| 8:00 pm GMT | 1:30 am IST(next day) |
| 9:00 pm GMT | 2:30 am IST(next day) |
| 10:00 pm GMT | 3:30 am IST(next day) |
| 11:00 pm GMT | 4:30 am IST(next day) |
Best times to meet
Your working hours overlap for 2 hours 30 minutes, from 9:00 am GMT (2:30 pm IST) to 11:30 am GMT (5:00 pm IST). That's the best window for a meeting.
About these time zones
GMT: Greenwich Mean Time
Greenwich Mean Time is UTC+0.
The same time as UTC. The UK, Ireland and Portugal use GMT in winter, then switch to summer time (BST in the UK) from late March to late October. Iceland and much of West Africa stay on GMT all year.
IST: India Standard Time
India Standard Time is UTC+5:30. IST is also used for Irish Standard Time (UTC+1, Ireland's summer time) and Israel Standard Time (UTC+2). This page converts India Standard Time.
All of India, with no daylight saving time. Sri Lanka uses the same offset.
How the difference changes
Neither zone changes its clocks, so the difference is 5 hours 30 minutes all year.