San Francisco to London Time Difference
London is 8 hours ahead of San Francisco. When it is noon in San Francisco, it is 20:00 in London.
Los Angeles (UTC-7) → London (UTC+1)
🕐 Interactive Time Explorer
When it's 10:00 in San Francisco, it's 18:00 in London
Drag the slider to see corresponding times in both cities
🤝 Best Meeting Times
San Francisco & London◐ Extended Hours (7 hours)
✈️ Travel Information
Distance
8,617 km
Est. Flight Time
~11.1h
Time Difference
+8h
Work Hours Overlap
0h
None
🔴 Office Closed
No overlap available
No overlap
⏰ Quick Conversion
06:00
San Francisco
14:00
London
09:00
San Francisco
17:00
London
12:00
San Francisco
20:00
London
15:00
San Francisco
23:00
London
18:00
San Francisco
02:00
London (+1)
21:00
San Francisco
05:00
London (+1)
00:00
San Francisco
08:00
London
03:00
San Francisco
11:00
London
Frequently Asked Questions
How many hours is San Francisco behind London?
London is 8 hours ahead of San Francisco. When it is 12:00 noon in San Francisco, it is 20:00 in London. San Francisco operates on America/Los Angeles (UTC-7), while London uses Europe/London (UTC+1).
What is the best time to call London from San Francisco?
Standard business hours (9 AM–5 PM) do not overlap between San Francisco and London due to the 8 hours difference. Consider early morning or late evening calls, or use async communication.
Does the San Francisco to London 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 San Francisco and London
The distance between San Francisco and London is approximately 8,617 km. A direct flight typically takes around 11.1 hours. Your arrival clock will show local London time — use our Flight Time Calculator to predict exact arrival times.