IST to BST Converter

BST is 4h 30m behind IST. When it's 12:00 PM IST, it's 7:30 AM BST.

From

IST · UTC+5:30

9:39:51AM

India Standard Time

e.g. Kolkata

To

BST · UTC+1

5:09:51AM

British Summer Time

e.g. London, Dublin

Open in World ClockBST → IST
9:00 AM IST=4:30 AM BST
12:00 PM IST=7:30 AM BST
5:00 PM IST=12:30 PM BST

Hourly conversion (IST → BST)

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

Shaded rows are within standard working hours (8am–6pm) on both sides.

IST here is India Standard Time (UTC+5:30). It can also mean Irish Standard Time or Israel Standard Time.

BST here is British Summer Time (UTC+1); in winter the UK uses GMT (UTC+0). BST can also mean Bangladesh Standard Time (UTC+6).

More IST conversions

Frequently asked questions

What is the time difference between IST and BST?
BST is 4h 30m behind IST. IST is UTC+5:30 and BST is UTC+1.
What is 12:00 PM IST in BST?
12:00 PM IST is 7:30 AM BST.
Does IST change for daylight saving time?
IST here is India Standard Time (UTC+5:30). It can also mean Irish Standard Time or Israel Standard Time.