Current Time in Chicago, United States

Chicago follows the CST/CDT time zone, which is GMT-5 relative to Coordinated Universal Time (UTC). Chicago observes Daylight Saving Time (DST), so the UTC offset shifts during summer months. Make sure to account for this when scheduling international meetings or calls. The IANA timezone identifier for Chicago is `America/Chicago`, which is the internationally standardized reference used by operating systems, programming languages, and scheduling software worldwide.

To convert the current time in Chicago to another city, simply note the UTC offset (GMT-5) and calculate the difference. For example, if Chicago is at GMT-5 and New York is at UTC-5, the difference is straightforward arithmetic. Our World Clock tool lets you compare Chicago side-by-side with any other city in the world — no math needed.

Unlike static converters that show a snapshot, our live clock for Chicago updates every second in real time. This is especially useful for: (1) Scheduling calls across time zones — see the exact moment in Chicago before you dial. (2) Remote teams — if your colleagues are in Chicago, always know if it's their working hours. (3) Travel planning — arrive prepared by tracking local time in Chicago before your flight.

• Country: United States 🇺🇸 • Timezone Abbreviation: CST/CDT • UTC Offset: GMT-5 • IANA Identifier: America/Chicago • Observes DST: Yes These details are pulled from the IANA Time Zone Database, the same source used by Apple, Google, and Microsoft for their system clocks.

Here is how Chicago (GMT-5) compares to the world's three major business hubs: • vs. New York: Chicago is 1 hour behind New York. • vs. London: Chicago is 6 hours behind London. • vs. Tokyo: Chicago is 14 hours behind Tokyo. Note: These differences may shift slightly when Daylight Saving Time changes occur in any of these cities. Always confirm with a live clock when scheduling time-sensitive events.

If you're scheduling a call or meeting with someone in Chicago from abroad, here are the optimal windows: • From the US (New York, ET): 8:00 AM–4:00 PM (when New York (ET) is 9 AM–5 PM) local Chicago time. • From the UK (London, GMT/BST): 3:00 AM–11:00 AM (when London (GMT/BST) is 9 AM–5 PM) local Chicago time. These windows align with standard 9 AM–5 PM business hours in the caller's location. Adjust for your specific team's working hours as needed.