KST to CST Time Converter
Compare KST and CST instantly. The clocks below stay in sync with the IANA time-zone database, so daylight-saving transitions are handled automatically for both Seoul and Chicago.
24-Hour Comparison Timeline
Green = working hours · Yellow = early/late · Red = night
24-hour reference table
| KST (Seoul) | CST (Chicago) |
|---|---|
| 12:00 AM | 10:00 AM(Fri, Jul 24) |
| 01:00 AM | 11:00 AM(Fri, Jul 24) |
| 02:00 AM | 12:00 PM(Fri, Jul 24) |
| 03:00 AM | 01:00 PM(Fri, Jul 24) |
| 04:00 AM | 02:00 PM(Fri, Jul 24) |
| 05:00 AM | 03:00 PM(Fri, Jul 24) |
| 06:00 AM | 04:00 PM(Fri, Jul 24) |
| 07:00 AM | 05:00 PM(Fri, Jul 24) |
| 08:00 AM | 06:00 PM(Fri, Jul 24) |
| 09:00 AM | 07:00 PM(Fri, Jul 24) |
| 10:00 AM | 08:00 PM(Fri, Jul 24) |
| 11:00 AM | 09:00 PM(Fri, Jul 24) |
| 12:00 PM | 10:00 PM(Fri, Jul 24) |
| 01:00 PM | 11:00 PM(Fri, Jul 24) |
| 02:00 PM | 12:00 AM |
| 03:00 PM | 01:00 AM |
| 04:00 PM | 02:00 AM |
| 05:00 PM | 03:00 AM |
| 06:00 PM | 04:00 AM |
| 07:00 PM | 05:00 AM |
| 08:00 PM | 06:00 AM |
| 09:00 PM | 07:00 AM |
| 10:00 PM | 08:00 AM |
| 11:00 PM | 09:00 AM |
Daylight saving time
Chicago observes daylight saving time; Seoul does not. Expect a one-hour swing when Chicago starts or ends DST.
Working-hours overlap
Standard 9-to-5 hours in Seoul and Chicago do not overlap. Use an early or late slot on one side.
Frequently asked questions
What is the time difference between KST and CST?+
CST (UTC-05:00) is currently 14 hours behind KST (UTC+09:00). This page recalculates the offset live from the IANA time-zone database, including any daylight-saving transitions.
Does KST or CST observe daylight saving time?+
Chicago observes daylight saving time; Seoul does not, so the gap changes when Chicago springs forward or falls back. Times on this page always reflect the current local rules.
What are the best meeting hours between Seoul and Chicago?+
Standard 9–5 working hours in Seoul and Chicago do not overlap. Pick an early or late slot for one side, or use the 24-hour table above to find a time that works.
How do I quickly convert KST to CST?+
Use the live clocks and 24-hour reference table above. Pick any hour on the KST row to see the matching CST time. The Event Planner also lets you pick a specific date and share it with attendees.