United States to KST time converter

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

United States EDT

Saturday, October 17, 2026

KST UTC+9

Sunday, October 18, 2026

United States
Washington, D.C.
Sat, Oct 17
EDTUTC-4
KST
Korea Standard Time
Sun, Oct 18
UTC+9+13h
Finding your time zone…
Shared working hours (9:00–18:00)

United States to KST conversion table

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

United StatesKST
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 KST): 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 KST switch clocks on different dates:

  • Oct 17, 2026 – Nov 1, 2026: +13h
  • Nov 1, 2026 – Mar 14, 2027: +14h
  • Mar 14, 2027 – Oct 17, 2027: +13h

More conversions

KST 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
UTC to KSTGMT to KSTEST to KSTCST to KSTMST to KSTPST to KSTCET to KSTMSK to KSTGST to KSTPKT to KSTIST to KSTSGT to KST

Questions and answers

What is the time difference between United States and KST?

KST is 13 hours ahead of United States.

What time is it in KST when it is 9 AM in United States?

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

When is the best time to call KST 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 KST): working hours on one side, early or late on the other.

Does the time difference between United States and KST change?

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