United States to South Korea time converter

South Korea is 13 hours ahead of United States. When it is 9:00 AM in United States, it is 10:00 PM in South Korea.

United States EDT

Wednesday, October 21, 2026

South Korea KST

Wednesday, October 21, 2026

United States
Washington, D.C.
Wed, Oct 21
EDTUTC-4
South Korea
Wed, Oct 21
KSTUTC+9+13h
Finding your time zone…
Shared working hours (9:00–18:00)

United States to South Korea conversion table

Every hour of today in United States and the matching time in South Korea. Light rows are typical working hours (9:00–18:00).

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

Best time to call or meet

Working hours don't overlap fully. The closest fit is 8:00 PM – 10:00 PM in United States (9:00 AM – 11:00 AM in South Korea): working hours on one side, early or late on the other.

Daylight saving time and the difference

The difference changes during the year because United States and South Korea switch clocks on different dates:

  • Oct 21, 2026 – Nov 1, 2026: +13h
  • Nov 1, 2026 – Mar 14, 2027: +14h
  • Mar 14, 2027 – Oct 21, 2027: +13h

More conversions

South Korea to United StatesUnited States to New YorkUnited States to LondonUnited States to Los AngelesUnited States to ChicagoUnited States to TorontoUnited States to São PauloUnited States to ParisUnited States to BerlinUnited States to MoscowUnited States to DubaiUnited States to New DelhiUnited States to Bangkok
New York to South KoreaLondon to South KoreaLos Angeles to South KoreaChicago to South KoreaToronto to South KoreaSão Paulo to South KoreaParis to South KoreaBerlin to South KoreaMoscow to South KoreaDubai to South KoreaNew Delhi to South KoreaBangkok to South Korea

Questions and answers

What is the time difference between United States and South Korea?

South Korea is 13 hours ahead of United States.

What time is it in South Korea when it is 9 AM in United States?

When it is 9:00 AM in United States, it is 10:00 PM in South Korea.

When is the best time to call South Korea from United States?

Working hours don't overlap fully. The closest fit is 8:00 PM – 10:00 PM in United States (9:00 AM – 11:00 AM in South Korea): working hours on one side, early or late on the other.

Does the time difference between United States and South Korea change?

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