BST to IST Converter
Convert time between British Summer Time (BST) and India Standard Time (IST).
Convert a specific time
- IndiaIST, UTC+5:30
- Eastern Time – New YorkEDT, UTC-4
- Central Time – ChicagoCDT, UTC-5
- Mountain Time – DenverMDT, UTC-6
- Arizona – PhoenixMST, UTC-7
- Pacific Time – Los AngelesPDT, UTC-7
- Mexico CityCST, UTC-6
- Saskatchewan – ReginaCST, UTC-6
- UTC / GMTUTC, UTC+0
- United Kingdom – LondonBST, UTC+1
- Central Europe – Paris, BerlinCEST, UTC+2
- Gulf – DubaiGST, UTC+4
- SingaporeSGT, UTC+8
- Japan – TokyoJST, UTC+9
- Australia Eastern – SydneyAEST, UTC+10
- EST (always UTC-5)Fixed offset, no DST
- CST (always UTC-6)Fixed offset, no DST
- MST (always UTC-7)Fixed offset, no DST
- PST (always UTC-8)Fixed offset, no DST
- IndiaIST, UTC+5:30
- Eastern Time – New YorkEDT, UTC-4
- Central Time – ChicagoCDT, UTC-5
- Mountain Time – DenverMDT, UTC-6
- Arizona – PhoenixMST, UTC-7
- Pacific Time – Los AngelesPDT, UTC-7
- Mexico CityCST, UTC-6
- Saskatchewan – ReginaCST, UTC-6
- UTC / GMTUTC, UTC+0
- United Kingdom – LondonBST, UTC+1
- Central Europe – Paris, BerlinCEST, UTC+2
- Gulf – DubaiGST, UTC+4
- SingaporeSGT, UTC+8
- Japan – TokyoJST, UTC+9
- Australia Eastern – SydneyAEST, UTC+10
- EST (always UTC-5)Fixed offset, no DST
- CST (always UTC-6)Fixed offset, no DST
- MST (always UTC-7)Fixed offset, no DST
- PST (always UTC-8)Fixed offset, no DST
Time Difference
UK time is 4 hours 30 minutes behind India Standard Time right now.
- Now until Oct 25, 2026: UK time is 4 hours 30 minutes behind India Standard Time (BST → IST).
- Oct 25, 2026 – Mar 28, 2027: UK time is 5 hours 30 minutes behind India Standard Time (GMT → IST).
- From Mar 28, 2027: UK time is 4 hours 30 minutes behind India Standard Time (BST → IST).
UK time is on BST right now
Best time to call
Convenient overlapping hours on Saturday, September 19, 2026.
| BST (UK time) | IST (India Standard Time) |
|---|---|
| 9:00 AM | 1:30 PM |
| 10:00 AM | 2:30 PM |
| 11:00 AM | 3:30 PM |
These hours fall within 9 AM–5 PM in both places.
Convert another time zone Plan a meeting across BST and ISTBST to IST conversion table
For Saturday, September 19, 2026 in UK time.
| 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(next day) |
| 9:00 PM | 1:30 AM(next day) |
| 10:00 PM | 2:30 AM(next day) |
| 11:00 PM | 3:30 AM(next day) |
About these time zones
British Summer Time (BST)
British Summer Time (BST) is UTC+1, used in the United Kingdom from the last Sunday in March to the last Sunday in October. The rest of the year the UK is on Greenwich Mean Time (GMT, UTC+0). Ireland switches on the same dates to Irish Standard Time.
India Standard Time (IST)
India Standard Time (IST) is UTC+5:30 and is used across all of India as a single time zone. India does not observe daylight saving time, so IST never changes — but its difference from places that do (like US Eastern Time) changes twice a year.
BST to IST FAQs
What time is it in IST when it is 9 AM BST?
On Saturday, September 19, 2026, 9:00 AM BST is 1:30 PM IST in India Standard Time.
How many hours ahead is BST from IST?
It depends on the time of year because of daylight saving time. Now until Oct 25, 2026: UK time is 4 hours 30 minutes behind India Standard Time (BST → IST). Oct 25, 2026 – Mar 28, 2027: UK time is 5 hours 30 minutes behind India Standard Time (GMT → IST).
What is the best time for a call between BST and IST?
On Saturday, September 19, 2026, good options are 9:00 AM BST (1:30 PM IST), 10:00 AM BST (2:30 PM IST), 11:00 AM BST (3:30 PM IST). These fall within normal 9 AM–5 PM working hours in both places.
Does BST change for daylight saving time?
The region changes: UK time switches between GMT and BST, so conversions depend on the date. BST itself always means UTC+1.
Does IST change for daylight saving time?
No. IST stays at UTC+5:30 all year.