Convert GMT to IST
Compare Greenwich Mean Time with India Standard Time, view the 5 hours 30 minutes difference, and schedule across both zones.
How GMT to IST Works
Convert Greenwich Mean Time (UTC+0) to India Standard Time (UTC+5:30) with an automatic 5 hours 30 minutes offset. IST does not observe daylight saving time, so conversions stay consistent year-round.
Hour-by-Hour Time Table
Use the visual grid and hour-by-hour table to compare GMT and IST across the day. Check overlapping business hours and export selected times with ICS download or Google Calendar.
Schedule Meetings Across Zones
Find practical meeting times between GMT and IST with side-by-side scheduling tools. Send plans through Gmail, add events to Google Calendar, or download an ICS file for quick sharing.
How to Convert GMT to IST
Open the GMT to IST converter: Go to https://www.xconvert.com/time-converter/gmt-to-ist-converter. The page loads with GMT and IST already shown in the visual comparison grid, which is useful when you need to line up a client call between London and India, schedule offshore support coverage, or confirm a handoff between UK and Indian teams.
Add comparison cities for your workflow: Click + Add City and search for cities that matter to your schedule, such as London, Dublin, or New Delhi. This is especially practical for companies handling UK-India consulting, IT services, finance operations, and customer support, because you can compare GMT-based business hours with India Standard Time in one screen.
Select the meeting window on the grid: Click Select, then drag across the colored timeline on the GMT row to highlight a range in purple; you can adjust it with the left and right handles or move the whole block by dragging the center. For example, dragging 9:00 GMT to 12:00 GMT shows 14:00 IST to 17:00 IST, which is a strong overlap for project reviews, vendor calls, and remote team standups between the UK and India.
Export and share the selected time: Once a range is selected, use the export options for ICS download, Google Calendar, Gmail, Copy to clipboard, or Share link. This makes it easy to send a confirmed GMT-to-IST meeting slot to a distributed team so everyone sees the appointment in their own local calendar without manually converting times.
Understanding the GMT to IST Time Difference
GMT is Greenwich Mean Time, UTC+0, and IST is India Standard Time, UTC+5. That means IST is 5 hours ahead of GMT, so a workday that starts in the morning on GMT shifts into the afternoon and evening in IST.
The conversion examples are straightforward and useful for planning. 9:00 GMT = 14:00 IST, 12:00 GMT = 17:00 IST, 15:00 GMT = 20:00 IST, and 18:00 GMT = 23:00 IST. These examples show that midday in GMT often lands in late afternoon or evening in IST, which matters when booking sales calls, engineering syncs, or operations reviews.
Daylight saving time can affect whether this GMT-to-IST comparison stays the same throughout the year. GMT is a standard-time abbreviation; its DST counterpart is IST, and IST is a standard-time abbreviation; its DST counterpart is IDT. In months when either side is observing its daylight-saving counterpart instead of standard time, the difference can change, so seasonal scheduling should be reviewed carefully for recurring meetings.
GMT is used across countries including the United Kingdom, Ireland, Ghana, Iceland, Senegal, Sierra Leone, Liberia, Mali, Guinea, Guinea-Bissau, Gambia, Burkina Faso, Mauritania, Togo, Ivory Coast, Sao Tome and Principe, Saint Helena, Guernsey, Jersey, and the Isle of Man. IST is used in India, Ireland, and Israel, so the abbreviation can appear in different regional contexts, which is another reason a visual converter is helpful when teams are coordinating across multiple markets.
Best Times for Calls and Meetings Between GMT and IST
Because IST is 5 hours ahead of GMT, the most practical overlap usually happens when the GMT side meets in the morning or around midday. The clearest examples are 9:00 GMT = 14:00 IST and 12:00 GMT = 17:00 IST, which create a solid shared business window for teams that need both sides online during normal office hours.
A 9:00 GMT to 12:00 GMT block converts to 14:00 IST to 17:00 IST, making it one of the most useful periods for cross-border meetings. This works well for UK-India consulting calls, software sprint reviews, agency-client check-ins, and finance or legal coordination where both teams need enough time left in the day to act on decisions.
Later GMT meetings become harder for India-based participants. 15:00 GMT = 20:00 IST and 18:00 GMT = 23:00 IST, so afternoon meetings in GMT can push Indian attendees into evening or near-night hours, which may be acceptable for urgent production incidents or executive escalations but is less suitable for recurring team meetings.
For recurring schedules, many teams prefer to anchor meetings near the earlier examples rather than the later ones. A slot around 9:00 GMT or 12:00 GMT is easier for regular collaboration, while 15:00 GMT and especially 18:00 GMT are better reserved for one-off updates, deadline-driven coordination, or support transitions that genuinely require extended coverage.
Frequently Asked Questions
What is the time difference between GMT and IST?
The time difference is +5 hours, which means IST is 5 hours ahead of GMT. In practical terms, when the workday begins in GMT, it is already later in the day in IST, so morning GMT meetings usually appear as afternoon meetings in India.
When is 9 AM GMT in IST?
9:00 GMT = 14:00 IST. This is one of the most useful conversion points for business scheduling because it places the meeting in early afternoon for India-based participants, which is usually still within standard office hours.
When is 12 PM GMT in IST?
12:00 GMT = 17:00 IST. That makes noon in GMT a late-afternoon slot in IST, which is often suitable for status reviews, client presentations, and end-of-day coordination before Indian teams log off.
Does the difference between GMT and IST change during DST?
It can change when daylight saving time is in effect, because GMT is a standard-time abbreviation; its DST counterpart is IST, and IST is a standard-time abbreviation; its DST counterpart is IDT. That means recurring meetings should be reviewed during DST periods, especially if your team works across countries that switch between standard time and daylight-saving time seasonally.
What is the best meeting time between GMT and IST?
The strongest overlap is usually in the GMT morning to midday period, based on the examples given. A meeting between 9:00 GMT and 12:00 GMT converts to 14:00 IST to 17:00 IST, which is generally better for routine collaboration than later GMT times that push into the Indian evening.
Is 3 PM GMT a good time for a call with India?
15:00 GMT = 20:00 IST. That can work for urgent discussions, production support, or executive calls, but it is less comfortable for recurring meetings because it lands in the evening for India-based teams.
Is 6 PM GMT too late for IST meetings?
18:00 GMT = 23:00 IST, so it is very late for most standard business use. This kind of slot is usually better reserved for exceptional cases such as release coordination, incident response, or a deadline-sensitive handoff rather than a normal weekly meeting.
Which countries use GMT and IST?
GMT is used in countries and territories including the United Kingdom, Ireland, Iceland, Ghana, Senegal, Sierra Leone, Liberia, Mali, Guinea, Guinea-Bissau, Gambia, Burkina Faso, Mauritania, Togo, Ivory Coast, Sao Tome and Principe, Saint Helena, Guernsey, Jersey, and the Isle of Man. IST is used in India, Ireland, and Israel, so it is important to confirm which regional IST someone means when scheduling international meetings.