Exact Time Difference: Seoul to San Francisco
Time in Seoul is 16 hours ahead
Frequently Asked Questions
What is the Seoul to San Francisco time difference?
Seoul is 16 hours ahead of San Francisco. Seoul uses Asia/Seoul and San Francisco uses America/Los_Angeles.
Why is scheduling between Seoul and San Francisco difficult?
With a 16 hours difference, Seoul and San Francisco have no overlapping 9–5 window. Teams rely on early morning or late evening slots.
Do I need to worry about DST when scheduling between Seoul and San Francisco?
Neither Seoul nor San Francisco has a DST transition this week. The 16 hours gap remains consistent.
When it is 12:00 noon in Seoul, what time is it in San Francisco?
12:00 PM Seoul time = 8:00 PM in San Francisco.
How can I quickly find the current time in San Francisco from Seoul?
The slider is the fastest method — move it to any Seoul hour and watch San Francisco update live. The text bar also accepts natural language input.
Are there public holidays that might interrupt meetings between Seoul and San Francisco?
Chuseok falls on September 24 in Seoul. If you have meetings around that date, confirm availability in advance.
What are the official time zones for Seoul and San Francisco?
Seoul is in the Asia/Seoul timezone. San Francisco is in America/Los_Angeles. The difference is 16 hours.
9 AM Seoul time converts to what in San Francisco?
9:00 AM in Seoul = 5:00 PM in San Francisco. That falls outside standard hours in San Francisco — confirm with your contact.
5 PM in Seoul is what time in San Francisco?
When the workday ends at 5 PM in Seoul, San Francisco reads 1:00 AM. Your San Francisco contact won't see it until their workday begins.
Are Seoul and San Francisco east or west of UTC?
Both Seoul (Asia/Seoul) and San Francisco (America/Los_Angeles) have defined UTC offsets. The gap between those offsets is 16 hours.
Quick time conversions: Seoul → San Francisco
Common reference points to help you plan across the time difference.
When it's 1:00 PM in Seoul, the time in San Francisco is 9:00 PM.(-1 day)
If I call at 11:00 AM from Seoul, what time is it in San Francisco?—7:00 PM(-1 day)
12:00 PMin Seoul→8:00 PMin San Francisco(-1 day)
A 6:00 AM start in Seoul means 2:00 PM for your contact in San Francisco.(-1 day)
7:00 PMin Seoul→3:00 AMin San Francisco
People also compare Seoul with...
Other time zones from San Francisco
Seoul ↔ San Francisco
No overlap — one side will join outside working hours· Showing core hours (08:00–18:00)
Seoul
San Francisco
Working hours: 09:00–17:00 local. Green = both working. Purple = one side only.