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Time zonesLive · DST-aware

IST to BST Converter

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

Quick presets

IST to BST Converter

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

ToolFeather · Intl API

About converting IST to BST

India Standard Time (India) and British Time (London) (London) 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 BST 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 BST: the time difference through the year

The gap between IST and BST changes during the year because only one of them uses daylight saving.

PeriodDifference
Oct 23, 2026 – Oct 24, 2026BST 4 h 30 min behind IST
Oct 25, 2026 – Mar 27, 2027BST 5 h 30 min behind IST
Mar 28, 2027 – Oct 23, 2027BST 4 h 30 min behind IST

Daylight-saving changes in the next year

ZoneDateOffsetChange
BSTOct 25, 2026UTC+1 → UTC+0Clocks go back 1 hour
BSTMar 28, 2027UTC+0 → UTC+1Clocks go forward 1 hour
BSTOct 31, 2027UTC+1 → UTC+0Clocks go back 1 hour

IST to BST conversion table

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

BST · British Time (London)

UK time is GMT (UTC+0) in winter and British Summer Time (BST, UTC+1) from the last Sunday in March to the last Sunday in October. Ireland and Portugal follow the same switch dates.

Frequently asked questions

6 answers
What is the time difference between IST and BST?
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 British Time (London), so the time you see is always right for right now.
How do I convert IST to BST?
Enter a time in the IST box and the equivalent BST 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 BST converter accurate with daylight saving?
Yes. It uses your browser's built-in time-zone database (the IANA zones behind India and London), which tracks daylight-saving changes automatically, so the current times and difference are correct.
What time is it in London right now?
The live clock above shows the current time in London (BST), updating every second, alongside IST.
Does the IST to BST time difference change?
Yes. Over the next 12 months it is 4 h 30 min behind or 5 h 30 min behind, depending on the date — see the table of periods on this page.
What is a good meeting time for IST and BST?
Office hours overlap from 1:30 PM to 5:00 PM IST (9:00 AM to 12:30 PM BST).