IST to BST Converter
British Summer Time · London, Manchester, Birmingham, Edinburgh
Also convert in reverse: BST to IST →
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IST to BST Conversion Table
Common IST times converted to British Summer Time
| IST (UTC+05:30) | BST (UTC+01:00) | Note |
|---|---|---|
| 12:00 AM (midnight) | 7:30 PM | −1 day |
| 6:00 AM | 1:30 AM | |
| 9:00 AM | 4:30 AM | |
| 12:00 PM (noon) | 7:30 AM | |
| 3:00 PM | 10:30 AM | |
| 6:00 PM | 1:30 PM | |
| 9:00 PM | 4:30 PM | |
| 11:30 PM | 7:00 PM |
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About British Summer Time
How to convert IST to BST
Indian Standard Time (IST) is UTC+5:30. British Summer Time is UTC+01:00. To convert IST to BST, subtract 4.5 hours from your IST time.
For example, 12:00 PM IST = 7:30 AM BST .
Time Difference: India (IST) and UK
Indian Standard Time (IST) is UTC+5:30. British Summer Time is UTC+01:00, making the difference IST −4:30 hrs. India does not observe Daylight Saving Time — IST stays fixed at UTC+5:30 year-round. If UK observes DST, the offset between IST and BST changes by 1 hour during the DST period (typically spring–autumn in the Northern Hemisphere).
⏰ Best overlap: 3:00 IST = 10:30 AM BST
Common IST Times in BST
| India (IST) | UK — BST | Day |
|---|---|---|
| 9:00 AM IST (India morning) | 4:30 AM BST | same day |
| 12:00 PM IST (India noon) | 7:30 AM BST | same day |
| 3:00 PM IST (India afternoon) | 10:30 AM BST | same day |
| 6:00 PM IST (India evening) | 1:30 PM BST | same day |
| 9:00 PM IST (India night) | 4:30 PM BST | same day |
Convert BST times to Indian Standard Time: BST to IST Converter →
LSE (London) Market Hours in IST
London Stock Exchange open and close times in IST, with DST (British Summer Time) notes for Indian investors:
India–UK Work Hour Overlap
Find the best meeting windows between India (IST) and UK — including shared business hours, DST shifts, and daily overlap charts.
View India–UK Overlap →