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Time zonesLive · DST-aware

IST to GMT Converter

See the current time in IST (India) and GMT (Greenwich) side by side, the exact time difference right now, and convert any time between the two zones.

Quick presets

IST to GMT Converter

IST
India
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GMT
Greenwich
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Uses your browser's built-in, DST-aware time-zone data.

ToolFeather · Intl API

About converting IST to GMT

India Standard Time (India) and Greenwich Mean Time (Greenwich) are in different time zones, so a meeting, call or stream that's convenient in one may be early or late in the other. The clocks above update live and account for daylight saving automatically, so the time difference you see is the real one for today — not a fixed number that goes stale twice a year.

To plan across the two, type a time into the IST box (or tap a quick preset) and read the GMT equivalent, including a "next day" or "previous day" note when the conversion crosses midnight. For any other pair of zones or cities, use the full timezone converter.

IST vs GMT: the time difference through the year

The difference stays the same all year: GMT is 5 h 30 min behind IST.

PeriodDifference
Oct 23, 2026 – Oct 23, 2027GMT 5 h 30 min behind IST

Daylight saving

Neither IST nor GMT uses daylight saving, so this conversion never changes.

IST to GMT conversion table

ISTGMT
12:00 AM6:30 PM (previous day)
1:00 AM7:30 PM (previous day)
2:00 AM8:30 PM (previous day)
3:00 AM9:30 PM (previous day)
4:00 AM10:30 PM (previous day)
5:00 AM11:30 PM (previous day)
6:00 AM12:30 AM
7:00 AM1:30 AM
8:00 AM2:30 AM
9:00 AM3:30 AM
10:00 AM4:30 AM
11:00 AM5:30 AM
12:00 PM6:30 AM
1:00 PM7:30 AM
2:00 PM8:30 AM
3:00 PM9:30 AM
4:00 PM10:30 AM
5:00 PM11:30 AM
6:00 PM12:30 PM
7:00 PM1:30 PM
8:00 PM2:30 PM
9:00 PM3:30 PM
10:00 PM4:30 PM
11:00 PM5:30 PM

Best time to meet

The two zones

IST · India Standard Time

India Standard Time is UTC+5:30 all year — one of the few half-hour offsets. India uses a single time zone and has no daylight saving.

GMT · Greenwich Mean Time

Greenwich Mean Time is UTC+0 all year. It is the base for world time; the UK uses GMT only in winter and switches to BST in summer.

Frequently asked questions

6 answers
What is the time difference between IST and GMT?
It's shown live at the top of this page (and it can change with daylight saving). The converter uses the current, DST-aware difference between India Standard Time and Greenwich Mean Time, so the time you see is always right for right now.
How do I convert IST to GMT?
Enter a time in the IST box and the equivalent GMT time appears instantly, adjusted for the current offset between the two zones — including a note if it lands on the previous or next day.
Is this IST to GMT converter accurate with daylight saving?
Yes. It uses your browser's built-in time-zone database (the IANA zones behind India and Greenwich), which tracks daylight-saving changes automatically, so the current times and difference are correct.
What time is it in Greenwich right now?
The live clock above shows the current time in Greenwich (GMT), updating every second, alongside IST.
Does the IST to GMT time difference change?
No. Neither switch changes the gap: GMT is 5 h 30 min behind IST all year.
What is a good meeting time for IST and GMT?
Office hours overlap from 2:30 PM to 5:00 PM IST (9:00 AM to 11:30 AM GMT).