BST to IST

BST (British Summer Time, UTC+1) and IST (India Standard Time, UTC+5:30) are fixed offsets, so the gap never changes: IST is always 4 hours 30 minutes ahead of BST. Use the table below to convert any BST time to IST.

BST — British Summer Time

—

IST — India Standard Time

—

IST is 4 hours 30 minutes ahead of BST.

BST is the UK's summer offset (UTC+1); in winter the UK is on GMT. See that conversion →

IST here means India Standard Time (UTC+5:30) — not Irish or Israel time.

BST to IST conversion table

BST	IST
12:00 AM	4:30 AM
1:00 AM	5:30 AM
2:00 AM	6:30 AM
3:00 AM	7:30 AM
4:00 AM	8:30 AM
5:00 AM	9:30 AM
6:00 AM	10:30 AM
7:00 AM	11:30 AM
8:00 AM	12:30 PM
9:00 AM	1:30 PM
10:00 AM	2:30 PM
11:00 AM	3:30 PM
12:00 PM	4:30 PM
1:00 PM	5:30 PM
2:00 PM	6:30 PM
3:00 PM	7:30 PM
4:00 PM	8:30 PM
5:00 PM	9:30 PM
6:00 PM	10:30 PM
7:00 PM	11:30 PM
8:00 PM	12:30 AM (+1 day)
9:00 PM	1:30 AM (+1 day)
10:00 PM	2:30 AM (+1 day)
11:00 PM	3:30 AM (+1 day)

FAQ

What is the BST to IST time difference?

IST is 4 hours 30 minutes ahead of BST. Both are fixed named offsets (BST is UTC+1, IST is UTC+5:30), so unlike a city-to-city comparison this gap does not move — the conversion table below is the same every day of the year.

What time is 9 AM BST in IST?

9 AM BST is 1:30 PM IST. The full 24-hour table above lists every hour so you can convert any BST time to IST at a glance.

Is BST ahead of or behind IST?

IST is 4 hours 30 minutes ahead of BST, which is the same as saying BST is 4 hours 30 minutes behind IST.

Does BST to IST change with daylight saving?

The BST↔IST offset itself never changes. Note: BST is the UK's summer offset (UTC+1); in winter the UK is on GMT. IST here means India Standard Time (UTC+5:30) — not Irish or Israel time.

Other conversions

BST to EST · BST to PST · BST to CST · GMT to IST · All zone converters →

Learn how time zones work

UTC & GMT explained · Daylight saving explained · Current local times around the world