San Francisco to Seoul time converter

Seoul is 16 hours ahead of San Francisco. When it is 9:00 AM in San Francisco, it is 1:00 AM (Wed, Oct 21) in Seoul.

San Francisco PDT

Tuesday, October 20, 2026

Seoul KST

Wednesday, October 21, 2026

San Francisco
California, United States
Tue, Oct 20
PDTUTC-7
Seoul
South Korea
Wed, Oct 21
KSTUTC+9+16h
Finding your time zone…
Shared working hours (9:00–18:00)

San Francisco to Seoul conversion table

Every hour of today in San Francisco and the matching time in Seoul. Light rows are typical working hours (9:00–18:00).

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

Best time to call or meet

Both sides are at work from 5:00 PM – 6:00 PM in San Francisco (9:00 AM – 10:00 AM in Seoul).

Daylight saving time and the difference

The difference changes during the year because San Francisco and Seoul switch clocks on different dates:

  • Oct 20, 2026 – Nov 1, 2026: +16h
  • Nov 1, 2026 – Mar 14, 2027: +17h
  • Mar 14, 2027 – Oct 20, 2027: +16h

Distance

San Francisco and Seoul are 9,029 km (5,610 miles) apart in a straight line.

More conversions

Seoul to San FranciscoSan Francisco to New YorkSan Francisco to LondonSan Francisco to Los AngelesSan Francisco to ChicagoSan Francisco to TorontoSan Francisco to São PauloSan Francisco to ParisSan Francisco to BerlinSan Francisco to MoscowSan Francisco to DubaiSan Francisco to New DelhiSan Francisco to Bangkok
New York to SeoulLondon to SeoulLos Angeles to SeoulChicago to SeoulToronto to SeoulSão Paulo to SeoulParis to SeoulBerlin to SeoulMoscow to SeoulDubai to SeoulNew Delhi to SeoulBangkok to Seoul

Questions and answers

What is the time difference between San Francisco and Seoul?

Seoul is 16 hours ahead of San Francisco.

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

When it is 9:00 AM in San Francisco, it is 1:00 AM (Wed, Oct 21) in Seoul.

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

Both sides are at work from 5:00 PM – 6:00 PM in San Francisco (9:00 AM – 10:00 AM in Seoul).

Does the time difference between San Francisco and Seoul change?

Yes, for part of the year, because daylight saving time starts and ends on different dates or applies on one side only.