IST to BST Converter – India Standard Time to British Summer Time
BST is 4 hours 30 minutes behind IST. IST (India Standard Time) is UTC+5:30 all year, while BST (British Summer Time) is UTC+1 all year. The live clocks below show the current time in both zones, updated every second.
IST to BST Conversion Table (Hour by Hour)
Standard-time conversion from India Standard Time to British Summer Time.
| IST (UTC+5:30) | BST (UTC+1) |
|---|---|
| 12:00 AM | 7:30 PM (previous day) |
| 1:00 AM | 8:30 PM (previous day) |
| 2:00 AM | 9:30 PM (previous day) |
| 3:00 AM | 10:30 PM (previous day) |
| 4:00 AM | 11:30 PM (previous day) |
| 5:00 AM | 12:30 AM |
| 6:00 AM | 1:30 AM |
| 7:00 AM | 2:30 AM |
| 8:00 AM | 3:30 AM |
| 9:00 AM | 4:30 AM |
| 10:00 AM | 5:30 AM |
| 11:00 AM | 6:30 AM |
| 12:00 PM | 7:30 AM |
| 1:00 PM | 8:30 AM |
| 2:00 PM | 9:30 AM |
| 3:00 PM | 10:30 AM |
| 4:00 PM | 11:30 AM |
| 5:00 PM | 12:30 PM |
| 6:00 PM | 1:30 PM |
| 7:00 PM | 2:30 PM |
| 8:00 PM | 3:30 PM |
| 9:00 PM | 4:30 PM |
| 10:00 PM | 5:30 PM |
| 11:00 PM | 6:30 PM |
Frequently Asked Questions
What is the time difference between IST and BST?
BST is 4 hours 30 minutes behind IST. IST (India Standard Time) is UTC+5:30 and BST (British Summer Time) is UTC+1.
How do I convert IST to BST?
Take your time in IST and subtract 4.5 hours and minutes as shown in the table above. For example, 9:00 AM IST is 4:30 AM in BST. The live clocks at the top of this page always show the current conversion.
Does daylight saving time affect IST to BST conversion?
No. Neither IST nor BST observes daylight saving time, so the difference between them is the same all year round.
What is the best time for a meeting between IST and BST?
Look for overlap between 9:00 AM-6:00 PM working hours in both zones using the conversion table above. BST is 4 hours 30 minutes behind IST, so there is normally several hours of business-hours overlap.