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Time difference between Seoul and San Francisco

San Francisco is 16 hours behind Seoul.

Seoul
South Korea · Korean Standard Time
4:46 PM
Wednesday, October 21, 2026
San Francisco
United States · Pacific Daylight Time
12:46 AM
Wednesday, October 21, 2026
Compare more placesSan Francisco to Seoul

Seoul to San Francisco time converter

Green rows are office hours in both places; light green rows are when both are awake.

SeoulSan Francisco
12:00 AM8:00 AM (previous day)
1:00 AM9:00 AM (previous day)
2:00 AM10:00 AM (previous day)
3:00 AM11:00 AM (previous day)
4:00 AM12:00 PM (previous day)
5:00 AM1:00 PM (previous day)
6:00 AM2:00 PM (previous day)
7:00 AM3:00 PM (previous day)
8:00 AM4:00 PM (previous day)
9:00 AM5:00 PM (previous day)
10:00 AM6:00 PM (previous day)
11:00 AM7:00 PM (previous day)
12:00 PM8:00 PM (previous day)
1:00 PM9:00 PM (previous day)
2:00 PM10:00 PM (previous day)
3:00 PM11:00 PM (previous day)
4:00 PM12:00 AM
5:00 PM1:00 AM
6:00 PM2:00 AM
7:00 PM3:00 AM
8:00 PM4:00 AM
9:00 PM5:00 AM
10:00 PM6:00 AM
11:00 PM7:00 AM

Questions

What is the time difference between Seoul and San Francisco?

San Francisco is 16 hours behind Seoul. Seoul is on UTC+9 and San Francisco is on UTC−7.

What time is it in San Francisco when it is 9 AM in Seoul?

When it is 9:00 AM in Seoul, it is 5:00 PM the previous day in San Francisco.

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

The best time to call or meet is 9:00 AM–10:00 AM in Seoul (5:00 PM–6:00 PM in San Francisco), when both places are in normal office hours.

Does the time difference between Seoul and San Francisco change?

Yes. Because of daylight saving time, the difference changes on Sunday, November 1, 2026, when San Francisco will be 17 hours behind Seoul.

Seoul is 16 hours ahead of San Francisco. More: time in Seoul · time in San Francisco

Time difference from Seoul to other cities

All Seoul time differences →

Time difference from San Francisco