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London · Reykjavik · Accra
Compare working hours worldwide in the meeting planner international.
Difference
IST vs GMT
UTC → UTC
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Mumbai · Delhi · Bengaluru
GMT to IST converter
GMT to IST Converter
Convert GMT (London) to IST (Mumbai) now. Live clocks, the current time difference, and a simple meeting window — free.
Etc/UTC
—
GMT → IST
To · India Standard Time
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Asia/Kolkata
Interactive diagram
Watch GMT convert into IST
Drag the GMT hour. Watch the India clock change.
GMT
9:00 AM GMT
—
IST ← GMT
India
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Full-day chart
GMT to IST hourly conversion chart
Full-day table. Tap a row to copy. Labels follow daylight saving.
| GMT | India | UTC offsets |
|---|
Meeting times
Best GMT to IST meeting window
Find hours that work on both sides. Then save the slot to your calendar.
Follow along
Step-by-step GMT to IST conversion
Four short steps to convert any GMT time to IST.
Choose GMT time
Select any hour in Greenwich Mean Time. Smart mode uses Etc/UTC.
GMT to IST conversion guide
GMT to IST conversion guide
This GMT to IST converter shows India Standard Time (UTC+5:30) for any Greenwich Mean Time (UTC±0) time. Use it to schedule between London and Mumbai. Choose Smart DST for live city clocks. Choose Fixed mode when you only want the GMT and IST labels.
GMT
GMT
UTC±0
London · Reykjavik · Accra
GMT vs IST—
India
IST
UTC+5:30
Mumbai · Delhi · Bengaluru
What is GMT to IST conversion?
GMT to IST conversion turns a GMT clock into the matching IST time. Use it for calls, travel, and teams in London and Mumbai.
GMT to IST time difference
IST is 5h 30m ahead of GMT. Add 5h 30m to the GMT time to get IST. The live clocks at the top show the current GMT to IST gap.
GMT vs IST
GMT is UTC±0. IST is UTC+5:30. They are different names. If a region uses daylight saving, check the live labels.
GMT to IST now / current time
Need gmt to ist right now? Read the live clocks, or tap Use current time for an instant GMT → IST result.
GMT to IST time difference
Season / context — tap to explore
See how daylight saving can change this pair.
GMT—
—GMT → IST
India—
Quick answers
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
- On this page it pairs with IST (UTC+5:30)
India
India Standard Time (IST)
UTC+5:30
India Standard Time (IST) is UTC+5:30. Smart DST uses Asia/Kolkata for cities such as Mumbai · Delhi · Bengaluru.
- Cities: Mumbai · Delhi · Bengaluru
- City clock: Asia/Kolkata
- Fixed IST: UTC+5:30
- From GMT: IST is 5h 30m ahead of GMT
GMT to IST FAQ
Common GMT to IST questions
What is the GMT to IST time difference?
IST is 5h 30m ahead of GMT. Fixed labels: GMT = UTC±0, IST = UTC+5:30. Add 5h 30m to the GMT time to get IST.
How do I convert GMT to IST quickly?
Add 5h 30m to the GMT time to get IST. Example: 3:00 AM GMT → 8:30 AM IST. Or use the live GMT to IST converter above.
Is IST the same as GMT?
No. GMT is UTC±0 (London · Reykjavik · Accra). IST is UTC+5:30 (Mumbai · Delhi · Bengaluru).
What is a good GMT to IST meeting time?
IST is ahead. Try 7:00–11:00 AM GMT. That is about 12:30 PM–4:30 PM IST. Use the meeting planner on this page to export an ICS or Google Calendar invite.
What cities use GMT and IST?
GMT is common in London · Reykjavik · Accra. IST is common in Mumbai · Delhi · Bengaluru. Smart DST uses Etc/UTC and Asia/Kolkata.