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Mumbai · Delhi · Bengaluru
Compare working hours worldwide in the meeting planner time zone.
Difference
GMT vs IST
UTC → UTC
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London · Reykjavik · Accra
IST to GMT converter
IST to GMT Converter
Convert IST (Mumbai) to GMT (London) now. Live clocks, the current time difference, and a simple meeting window — free.
Asia/Kolkata
—
IST → GMT
To · Greenwich Mean Time
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Etc/UTC
Interactive diagram
Watch IST convert into GMT
Drag the India hour. Watch the GMT clock change.
India
9:00 AM IST
—
GMT ← IST
GMT
—
Full-day chart
IST to GMT hourly conversion chart
Full-day table. Tap a row to copy. Labels follow daylight saving.
| India | GMT | UTC offsets |
|---|
Meeting times
Best IST to GMT meeting window
Find hours that work on both sides. Then save the slot to your calendar.
Follow along
Step-by-step IST to GMT conversion
Four short steps to convert any IST time to GMT.
Choose IST time
Select any hour in India Standard Time. Smart mode uses Asia/Kolkata.
IST to GMT conversion guide
IST to GMT conversion guide
This IST to GMT converter shows Greenwich Mean Time (UTC±0) for any India Standard Time (UTC+5:30) time. Use it to schedule between Mumbai and London. Choose Smart DST for live city clocks. Choose Fixed mode when you only want the IST and GMT labels.
India
IST
UTC+5:30
Mumbai · Delhi · Bengaluru
IST vs GMT—
GMT
GMT
UTC±0
London · Reykjavik · Accra
What is IST to GMT conversion?
IST to GMT conversion turns a IST clock into the matching GMT time. Use it for calls, travel, and teams in Mumbai and London.
IST to GMT time difference
GMT is 5h 30m behind IST. Subtract 5h 30m from the IST time to get GMT. The live clocks at the top show the current IST to GMT gap.
IST vs GMT
IST is UTC+5:30. GMT is UTC±0. They are different names. If a region uses daylight saving, check the live labels.
IST to GMT now / current time
Need ist to gmt right now? Read the live clocks, or tap Use current time for an instant IST → GMT result.
IST to GMT time difference
Season / context — tap to explore
See how daylight saving can change this pair.
India—
—IST → GMT
GMT—
Quick answers
India
India Standard Time (IST)
UTC+5:30
India Standard Time (IST) is UTC+5:30. Smart DST uses the city clock Asia/Kolkata so daylight saving stays correct for Mumbai · Delhi · Bengaluru.
- Cities: Mumbai · Delhi · Bengaluru
- City clock: Asia/Kolkata
- Fixed IST: UTC+5:30
- On this page it pairs with GMT (UTC±0)
GMT
Greenwich Mean Time (GMT)
UTC±0
Same as UTC+0 here. London often uses BST in summer.
- Cities: London · Reykjavik · Accra
- City clock: Etc/UTC
- Fixed GMT: UTC±0
- From IST: GMT is 5h 30m behind IST
IST to GMT FAQ
Common IST to GMT questions
What is the IST to GMT time difference?
GMT is 5h 30m behind IST. Fixed labels: IST = UTC+5:30, GMT = UTC±0. Subtract 5h 30m from the IST time to get GMT.
How do I convert IST to GMT quickly?
Subtract 5h 30m from the IST time to get GMT. Example: 3:00 AM IST → 9:30 PM GMT. Or use the live IST to GMT converter above.
Is GMT the same as IST?
No. IST is UTC+5:30 (Mumbai · Delhi · Bengaluru). GMT is UTC±0 (London · Reykjavik · Accra).
What is a good IST to GMT meeting time?
GMT is behind. Try 10:00 AM–3:00 PM IST. That is about 4:30 AM–9:30 AM GMT. Use the meeting planner on this page to export an ICS or Google Calendar invite.
What cities use IST and GMT?
IST is common in Mumbai · Delhi · Bengaluru. GMT is common in London · Reykjavik · Accra. Smart DST uses Asia/Kolkata and Etc/UTC.