Tokyo to San Francisco Time Difference
San Francisco is 16 hours behind Tokyo. When it is noon in Tokyo, it is 20:00 in San Francisco.
Tokyo (UTC+9) → Los Angeles (UTC-7)
Tokyo (JST, UTC+9) is 16–17 hours ahead of San Francisco (PST/PDT). The gap is 17 hours during US standard time and 16 hours during PDT. Japan and Silicon Valley share deep connections in venture capital, semiconductor supply chains, and consumer technology.
🕐 Interactive Time Explorer
When it's 21:00 in Tokyo, it's 05:00 in San Francisco
Drag the slider to see corresponding times in both cities
🤝 Best Meeting Times
Tokyo & San Francisco◐ Extended Hours (7 hours)
✈️ Travel Information
Distance
8,272 km
Est. Flight Time
~10.7h
Time Difference
-16h
Work Hours Overlap
0h
None
🔴 Office Closed
No overlap available
No overlap
⏰ Quick Conversion
06:00
Tokyo
14:00
San Francisco (-1)
09:00
Tokyo
17:00
San Francisco (-1)
12:00
Tokyo
20:00
San Francisco (-1)
15:00
Tokyo
23:00
San Francisco (-1)
18:00
Tokyo
02:00
San Francisco
21:00
Tokyo
05:00
San Francisco
00:00
Tokyo
08:00
San Francisco (-1)
03:00
Tokyo
11:00
San Francisco (-1)
Frequently Asked Questions
How many hours is Tokyo ahead of San Francisco?
San Francisco is 16 hours behind Tokyo. When it is 12:00 noon in Tokyo, it is 20:00 in San Francisco. Tokyo operates on Asia/Tokyo (UTC+9), while San Francisco uses America/Los Angeles (UTC-7).
What is the best time to call San Francisco from Tokyo?
Standard business hours (9 AM–5 PM) do not overlap between Tokyo and San Francisco due to the 16 hours difference. Consider early morning or late evening calls, or use async communication.
Does the Tokyo to San Francisco 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 Tokyo and San Francisco
The distance between Tokyo and San Francisco is approximately 8,272 km. A direct flight typically takes around 10.7 hours. Your arrival clock will show local San Francisco time — use our Flight Time Calculator to predict exact arrival times.