IST to GMT Time Converter
Type a time in IST to see it in GMT, with daylight saving handled for the date you pick. Every hour of the day is in the table below, and the meeting planner shows when both working days overlap.
In GMT
3:30 amGMT
9:00 am IST on Wed 14 Jan 2026 is 3:30 am GMT the same day. GMT is 5 h 30 min behind India.
- Date there
- Wednesday 14 January 2026
- Offsets
- IST UTC+5:30 · GMT UTC+0
- Date used
- Example day: Wednesday 14 January 2026
How this works: Method, 3 sources,
How this works
Method
Here IST means India Standard Time, UTC+5:30 all year; GMT means Greenwich Mean Time, fixed at UTC+0 (the UK itself moves to BST, UTC+1, in summer). So GMT is 5 h 30 min behind IST all year. Two 9-to-5 working days overlap by 2 h 30 min all year. Full method
Sources
Changes
- 15 more conversion pages (IST to CST, BST to IST, SGT, GST, JST, MST and more); each conversion page shows all 24 hours with working hours shaded, and its best meeting times.
- The pickers find about a thousand more cities, states and countries (Seattle, Bangalore, Texas), and each conversion page names the next clock change on either side.
- The converter opens on the time now, live, with a Now choice beside the time, and the main converter starts from your own time zone.
- First published, with a world clock, pages for the time in 31 places and 15 common conversions such as PST to IST.
How to convert IST to GMT
Here IST means India Standard Time, UTC+5:30 all year; GMT means Greenwich Mean Time, fixed at UTC+0 (the UK itself moves to BST, UTC+1, in summer). So GMT is 5 h 30 min behind IST all year. Two 9-to-5 working days overlap by 2 h 30 min all year.
IST to GMT is searched for two reasons. Some people want the UK: a call with London, a parcel tracked through a British hub, a football kick-off. Others want GMT as a reference, because event pages, job listings and online exams often give times as GMT or as GMT plus or minus some hours. Fixed GMT is always 5 h 30 min behind India, and that is what this page converts to.
If you mean the clock on a wall in London, remember that the UK uses GMT only in winter. From the last Sunday in March to the last Sunday in October Britain is on BST, one hour ahead of GMT, so London is then 4 h 30 min behind India. The IST to BST page follows London’s clock through the year. For a time written as “GMT+2” or “GMT−5”, start from GMT and add or subtract those hours, as the FAQ below shows.
Rule of thumb: Subtract 5½ hours from Indian time for GMT: 6:00 pm IST is 12:30 pm GMT. For London in summer (BST), subtract 4½ hours: 1:30 pm.
GMT = IST −5:30
- The UK keeps Greenwich Mean Time only from the last Sunday in October to the last Sunday in March; for the rest of the year it is on British Summer Time, GMT+1. Source: GOV.UK, When do the clocks change?.
Meeting planner: best times for IST and GMT
The easiest meetings fall where both working days overlap, shaded dark on the bar. The lighter shading is still between 7 am and 9 pm on both clocks, so one side starts early or stays late.
All year: IST and GMT
- Both at work: 2:30 pm to 5:00 pm IST is 9:00 am to 11:30 am GMT (2 h 30 min).
- Early or late for one side: 12:30 pm to 2:30 pm IST is 7:00 am to 9:00 am GMT (2 h); 5:00 pm to 9:00 pm IST is 11:30 am to 3:30 pm GMT (4 h).
Both between 9 am and 5 pmBoth between 7 am and 9 pm
IST to GMT time conversion table
Every hour of the IST day and the time in GMT. The difference is the same all year.
| IST time | GMT time |
|---|---|
| 12:00 am | 6:30 pm (day before) |
| 1:00 am | 7:30 pm (day before) |
| 2:00 am | 8:30 pm (day before) |
| 3:00 am | 9:30 pm (day before) |
| 4:00 am | 10:30 pm (day before) |
| 5:00 am | 11:30 pm (day before) |
| 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 |
Shaded: 9 am to 5 pm on that clock. Where a row is shaded on both sides, both are at work.
Frequently Asked Questions
What is 9 am IST in GMT?
9:00 am IST is 3:30 am GMT, all year round.
How do I convert IST to GMT+2 or GMT+8?
IST is GMT+5:30. For GMT+2, subtract 3 h 30 min from Indian time; for GMT+8, add 2 h 30 min. In general, subtract 5 h 30 min to get GMT, then add the other zone’s hours.
What is 12 noon IST in GMT?
Noon in India is 6:30 am GMT on the same day. If the other person is in London during British Summer Time, it is 7:30 am on their clock.