Time difference
Chicago to Seoul Time Difference
Seoul is 14 hours ahead of Chicago — when it's 12:00 PM in Chicago, it's 2:00 AM the next day in Seoul. (Chicago (America/Chicago, CDT); Seoul (Asia/Seoul, KST).) Below: live local times, the best hours for a call, a full conversion table, and exact daylight-saving dates.
Seoul is 14 hours ahead of Chicago. Standard 9 AM–5 PM business hours in Chicago and Seoul do not overlap, so a live call needs one side outside normal hours. Clocks change on November 1, 2026, which briefly shifts the gap between Chicago and Seoul — the converter on this page always reflects the correct offset for the date you pick.
- When it's 9:00 AM in Chicago, it's 11:00 PM in Seoul.
- When it's 9:00 AM in Seoul, it's 7:00 PM the previous day in Chicago.
Seoul is currently 14 hours ahead of Chicago.
Interactive converter
12:00PM
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Best times to meet
Standard 9 AM – 5 PM hours in Chicago and Seoul do not overlap. The least-bad options are an early start in one city or a late evening call in the other — for example a 7–8 AM meeting in Chicago, or a 6–8 PM meeting in Seoul.
Quick conversion table
| Chicago | Seoul |
|---|---|
| 12 AM | 2:00 PM |
| 1 AM | 3:00 PM |
| 2 AM | 4:00 PM |
| 3 AM | 5:00 PM |
| 4 AM | 6:00 PM |
| 5 AM | 7:00 PM |
| 6 AM | 8:00 PM |
| 7 AM | 9:00 PM |
| 8 AM | 10:00 PM |
| 9 AM | 11:00 PM |
| 10 AM | 12:00 AM (next day) |
| 11 AM | 1:00 AM (next day) |
| 12 PM | 2:00 AM (next day) |
| 1 PM | 3:00 AM (next day) |
| 2 PM | 4:00 AM (next day) |
| 3 PM | 5:00 AM (next day) |
| 4 PM | 6:00 AM (next day) |
| 5 PM | 7:00 AM (next day) |
| 6 PM | 8:00 AM (next day) |
| 7 PM | 9:00 AM (next day) |
| 8 PM | 10:00 AM (next day) |
| 9 PM | 11:00 AM (next day) |
| 10 PM | 12:00 PM (next day) |
| 11 PM | 1:00 PM (next day) |
Daylight saving
On November 1, 2026, Chicago shifts for daylight saving. After that, Seoul will be 15 hours ahead of Chicago (currently 14 hours ahead of Chicago). The converter and the tables above always reflect the correct offset for the date you pick.
- Chicago is currently observing daylight saving time.
- Seoul does not observe daylight saving time.
Frequently asked questions
- Is Seoul ahead of or behind Chicago?
- Seoul is 14 hours ahead of Chicago.
- How many hours ahead of Chicago is Seoul?
- Seoul is 14 hours ahead of Chicago.
- What time is 9 AM in Chicago in Seoul?
- 9:00 AM in Chicago is 11:00 PM in Seoul.
- What time is noon in Chicago in Seoul?
- 12:00 PM in Chicago is 2:00 AM the next day in Seoul.
- What time is 5 PM in Chicago in Seoul?
- 5:00 PM in Chicago is 7:00 AM the next day in Seoul. Useful for end-of-day handoffs between the two offices.
- What time is 3 PM in Chicago in Seoul?
- 3:00 PM in Chicago is 5:00 AM the next day in Seoul.
- Is Chicago currently observing daylight saving time?
- Chicago is currently observing daylight saving time (summer time).
- Is Seoul currently observing daylight saving time?
- Seoul does not observe daylight saving time — its UTC offset stays the same all year.
- Do Chicago and Seoul observe daylight saving?
- On November 1, 2026, Chicago shifts for daylight saving. After that, Seoul will be 15 hours ahead of Chicago (currently 14 hours ahead of Chicago). The converter and the tables above always reflect the correct offset for the date you pick.
- When is the best time to call Seoul from Chicago?
- Chicago and Seoul business hours don't overlap. The closest options are early mornings in Chicago or late evenings, when one side stretches outside 9–5.
- When is the best time to call Chicago from Seoul?
- Seoul and Chicago business hours don't overlap. The closest options are early mornings in Seoul or late evenings, when one side stretches outside 9–5.
- Chicago (CDT) to Seoul (KST) — how do I convert quickly?
- Add 14 hours to Chicago local time to get Seoul local time. Or use the converter at the top of this page — it stays accurate through daylight-saving changes automatically.
Other conversions
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