London to San Francisco Time Difference

San Francisco is 8 hours behind London. Standard 9 AM–5 PM business hours in London and San Francisco do not overlap, so a live call needs one side outside normal hours. Clocks change on October 25, 2026, which briefly shifts the gap between London and San Francisco — the converter on this page always reflects the correct offset for the date you pick.

• When it's 9:00 AM in London, it's 1:00 AM in San Francisco.
• When it's 9:00 AM in San Francisco, it's 5:00 PM in London.

San Francisco is currently 8 hours behind London.

Standard 9 AM – 5 PM hours in London and San Francisco do not overlap. The least-bad options are an early start in one city or a late evening call in the other — for example a 7–8 AM meeting in London, or a 6–8 PM meeting in San Francisco.

On October 25, 2026, London shifts for daylight saving. After that, San Francisco will be 7 hours behind London (currently 8 hours behind London). The converter and the tables above always reflect the correct offset for the date you pick.

• London is currently observing daylight saving time.
• San Francisco is currently observing daylight saving time.

Frequently asked questions

Is San Francisco ahead of or behind London?

San Francisco is 8 hours behind London.

How many hours behind London is San Francisco?

San Francisco is 8 hours behind London.

What time is 9 AM in London in San Francisco?

9:00 AM in London is 1:00 AM in San Francisco.

What time is noon in London in San Francisco?

12:00 PM in London is 4:00 AM in San Francisco.

What time is 5 PM in London in San Francisco?

5:00 PM in London is 9:00 AM in San Francisco. Useful for end-of-day handoffs between the two offices.

What time is 3 PM in London in San Francisco?

3:00 PM in London is 7:00 AM in San Francisco.

Is London currently observing daylight saving time?

London is currently observing daylight saving time (summer time).

Is San Francisco currently observing daylight saving time?

San Francisco is currently observing daylight saving time (summer time).

Do London and San Francisco observe daylight saving?

On October 25, 2026, London shifts for daylight saving. After that, San Francisco will be 7 hours behind London (currently 8 hours behind London). The converter and the tables above always reflect the correct offset for the date you pick.

When is the best time to call San Francisco from London?

London and San Francisco business hours don't overlap. The closest options are early mornings in London or late evenings, when one side stretches outside 9–5.

When is the best time to call London from San Francisco?

San Francisco and London business hours don't overlap. The closest options are early mornings in San Francisco or late evenings, when one side stretches outside 9–5.

London (BST) to San Francisco (PDT) — how do I convert quickly?

Subtract 8 hours from London local time to get San Francisco local time. Or use the converter at the top of this page — it stays accurate through daylight-saving changes automatically.

• London to New York
• London to Tokyo
• Dubai to London
• London to Singapore
• London to Los Angeles
• London to Sydney
• London to Paris
• London to Mumbai
• Hong Kong to London
• Berlin to London