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Convert IST to GMT

India Standard Time (IST) to Greenwich Mean Time (GMT)

When it's 12:00 PM IST, it's 6:30 AM GMT

UTC+5:30 UTC±0 -5:30 hours

Interactive Converter

Pick any time and date to convert between IST and GMT.

IST to GMT Conversion Table

Full 24-hour comparison. Business hours (9 AM -- 6 PM) are highlighted.

IST GMT
12:00 AM 6:30 PM -1 day
1:00 AM 7:30 PM -1 day
2:00 AM 8:30 PM -1 day
3:00 AM 9:30 PM -1 day
4:00 AM 10:30 PM -1 day
5:00 AM 11:30 PM -1 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

Best Meeting Window

Top meeting times for teams in IST and GMT (9 AM -- 6 PM work hours, 1-hour meeting).

12a
3a
6a
9a
12p
3p
6p
9p
IST GMT+5:30
GMT GMT
Overlap
Everyone available
Most available
Some overlap
Outside work hours
1 4:00 PM -- 5:00 PM IST
IST: 4:00 PM GMT: 10:00 AM

All members within working hours. Everyone in mid-day range.

8 / 10
2 5:00 PM -- 6:00 PM IST
IST: 5:00 PM GMT: 11:00 AM

All members within working hours. 1 in mid-day range (9 AM–5 PM).

8 / 10
3 3:00 PM -- 4:00 PM IST
IST: 3:00 PM GMT: 9:00 AM

All members within working hours. Everyone in mid-day range.

7.8 / 10

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Time Difference & DST

GMT is 5 hours 30 minutes behind IST. IST is at UTC+5:30 and GMT is at UTC±0.

Upcoming DST Transitions:

GMT Clocks spring forward on March 30, 2026

The conversion table above reflects the current DST state at build time. Use the interactive converter for live, date-specific conversions.

Major Cities

India Standard Time (IST)

  • Mumbai
  • Delhi
  • Bangalore

Greenwich Mean Time (GMT)

  • London
  • Manchester
  • Birmingham

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