London to Chennai Time Difference
Chennai is 4 hours 30 min ahead of London. When it is noon in London, it is 16.5:00 in Chennai.
London (UTC+1) → Kolkata (UTC+5:30)
🕐 Interactive Time Explorer
When it's 17:00 in London, it's 21.5:00 in Chennai
Drag the slider to see corresponding times in both cities
🤝 Best Meeting Times
London & Chennai✓ Perfect Match (4 hours)
◐ Extended Hours (6 hours)
✈️ Travel Information
Distance
8,211 km
Est. Flight Time
~10.7h
Time Difference
+4.5h
Work Hours Overlap
4h
Good
🔴 Office Closed
Tomorrow 09:00
09:00 - 13:00
⏰ Quick Conversion
06:00
London
10.5:00
Chennai
09:00
London
13.5:00
Chennai
12:00
London
16.5:00
Chennai
15:00
London
19.5:00
Chennai
18:00
London
22.5:00
Chennai
21:00
London
1.5:00
Chennai (+1)
00:00
London
4.5:00
Chennai
03:00
London
7.5:00
Chennai
Frequently Asked Questions
How many hours is London behind Chennai?
Chennai is 4 hours 30 min ahead of London. When it is 12:00 noon in London, it is 16.5:00 in Chennai. London operates on Europe/London (UTC+1), while Chennai uses Asia/Kolkata (UTC+5.5).
What is the best time to call Chennai from London?
There are 4 hours of overlapping business time (9 AM–5 PM) between London and Chennai. The best window is 09:00–13:00 London time (13.5:00–17.5:00 in Chennai).
Does the London to Chennai time difference change throughout the year?
The time difference can shift by up to one hour when either city observes Daylight Saving Time (DST). DST transition dates differ between countries — typically March/April in the Northern Hemisphere and October in the Southern Hemisphere. Always verify the live difference above when scheduling important meetings near DST changeover dates.
Flying between London and Chennai
The distance between London and Chennai is approximately 8,211 km. A direct flight typically takes around 10.7 hours. Your arrival clock will show local Chennai time — use our Flight Time Calculator to predict exact arrival times.