Chicago to UTC
+5hChicago
CDTSOURCEUTC
UTCGreen rows indicate typical business hours (9 AM - 5 PM)
CDT and UTC on the World Map
The map below highlights the CDT (Central Standard Time) and UTC (Coordinated Universal Time) timezone regions across the globe.
CST – Central Standard Time
UTC-06:00Central Standard Time (CST) is the time zone for the central United States, Canada, and Mexico, 6 hours behind UTC.
- •CST covers 20 US states fully or partially.
- •Chicago and Houston are the two largest cities in the Central Time Zone.
- •Mexico City, one of the world's most populous cities, operates on CST.
- •CST is 1 hour behind EST and 2 hours ahead of PST.
UTC – Coordinated Universal Time
UTC+00:00Coordinated Universal Time (UTC) is the world's primary time standard, used as the basis for civil time worldwide.
- •UTC is the basis for all civil time zones worldwide.
- •The abbreviation 'UTC' is a compromise between English (CUT) and French (TUC).
- •UTC is based on atomic clocks and is accurate to within a nanosecond per day.
- •Servers and databases worldwide store timestamps in UTC to avoid timezone confusion.
- •Leap seconds are occasionally added to UTC to keep it aligned with Earth's rotation.
About Chicago
WikipediaChicago operates on Central Time (CST/CDT), 1 hour behind New York. Home to CME and CBOE, Chicago is a global center for derivatives trading.
The Chicago Board of Trade is the world's oldest futures and options exchange.
Chicago vs UTC: Offsets, DST and Best Call Times
Chicago runs on Central Daylight Time (CDT) at UTC-05:00, currently observing daylight saving time. UTC runs on Coordinated Universal Time (UTC) at UTC+00:00. That puts Chicago 5 hours ahead of UTC — a difference of +5h at the current offsets.
In practice, when it is 9:00 AM in Chicago it is 2:00 PM in UTC. Midnight in Chicago is 5:00 AM in UTC.Chicago observes daylight saving time while UTC does not, so the gap narrows or widens by an hour part of the year.
Chicago to UTC time conversion table
| Chicago (CDT) | UTC (UTC) | Day |
|---|---|---|
| 12:00 AM | 5:00 AM | same day |
| 6:00 AM | 11:00 AM | same day |
| 7:00 AM | 12:00 PM | same day |
| 8:00 AM | 1:00 PM | same day |
| 9:00 AM | 2:00 PM | same day |
| 12:00 PM | 5:00 PM | same day |
| 3:00 PM | 8:00 PM | same day |
| 5:00 PM | 10:00 PM | same day |
| 6:00 PM | 11:00 PM | same day |
| 9:00 PM | 2:00 AM | next day |
Why people convert Chicago to UTC time
- Scheduling a call from Chicago to UTC: a 10:00 AM start in Chicago lands at 3:00 PM in UTC, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both Chicago and UTC are inside the 9-to-5 working day between 9:00 AM and 12:00 PM CDT time (2:00 PM–5:00 PM UTC). That is roughly 3 hours of usable overlap.
- Coordinating a Chicago-based team with UTC contacts: quoting times in the other side's local clock — not your own — removes the single biggest source of missed meetings.
- Always state the zone abbreviation, not just the hour. "3:00 PM CDT" is unambiguous; "3 PM" across a +5h gap is not.
- Block 9:00 AM–12:00 PM CDT as the recurring meeting window if you work primarily from Chicago and need UTC colleagues present.
- Chicago: Clocks fall back on Sun, Nov 1, 2026. Re-check this page after that date because the offset changes and so does the +5h gap.
About CST (Central Standard Time)
Central Standard Time (CST) covers the central region of North America. It is the second most populous time zone in the US, including major cities like Chicago, Houston, and Dallas. CST is also used in Mexico City and much of Central America including Guatemala, Honduras, El Salvador, and Costa Rica. During summer, most of the US and Canada switch to Central Daylight Time (CDT, UTC-05:00), while Mexico and Central American countries generally remain on CST.
About UTC (Coordinated Universal Time)
Coordinated Universal Time (UTC) is the primary time standard by which the world regulates clocks and time. It is effectively the successor to GMT and is based on International Atomic Time with leap seconds added to keep it synchronized with Earth's rotation. UTC is used in aviation, computing, navigation, weather forecasting, and the International Space Station. Most programming languages and databases store timestamps in UTC.
Best time to call between Chicago and UTC
Both Chicago and UTC sit inside the 9 AM – 5 PM working day between 9:00 AM–12:00 PM CDT, which is 2:00 PM–5:00 PM UTC. That gives roughly 3 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
Chicago and UTC overlap for about 3 hours during the working day — enough for meetings if you avoid the edges of the window.
Chicago is 5 hours ahead of UTC (CDT UTC-05:00 → UTC UTC+00:00). The shared working window is 9:00 AM–12:00 PM CDT. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
Chicago
☀ Currently in DST
Standard: UTC-06:00 · DST: UTC-05:00
Clocks fall back on Sun, Nov 1, 2026
UTC
Does not observe DST
Learn More About Time
Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:
Frequently Asked Questions
What is the time difference between Chicago and UTC?
Chicago (CDT, UTC-05:00) is 5 hours ahead of UTC (UTC, UTC+00:00). The gap is currently +5h.
How do I convert Chicago time to UTC time?
Add +5h to Chicago local time. For example, 9:00 AM in Chicago is 2:00 PM in UTC.
What time is it in UTC right now?
UTC uses UTC at UTC+00:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +5h offset from Chicago.
What is the best time to call UTC from Chicago?
Call between 9:00 AM and 12:00 PM CDT — that maps to 2:00 PM–5:00 PM UTC and keeps both parties inside the working day.
Which is ahead, Chicago or UTC?
Chicago is 5 hours ahead of UTC. When it is 12:00 PM in Chicago it is 5:00 PM in UTC.
Do Chicago and UTC use different time zones?
Chicago (USA) uses CDT at UTC-05:00, while UTC uses UTC at UTC+00:00. The IANA identifiers are America/Chicago and UTC.
Does daylight saving time affect the Chicago–UTC difference?
Yes at the moment: Chicago is on daylight saving time and UTC is not, so the +5h gap shifts by an hour when exactly one of them changes clocks.
Which other cities share Chicago's time zone?
CDT also covers Chicago, Houston, Dallas, San Antonio, Mexico City, Austin, Winnipeg, Memphis and 6 more.
Which countries use CDT, Chicago's zone?
CDT is used in United States (Central), Canada (Manitoba, Saskatchewan), Mexico, Guatemala, Honduras, El Salvador, Costa Rica, Nicaragua and 1 more.
Is there a day difference between Chicago and UTC?
Not normally. The +5h gap only pushes the date over for late-evening times.
What is the time difference between Chicago and UTC?
UTC is +5h from Chicago.
What timezone is Chicago in?
Chicago operates on Central Time (CST/CDT), 1 hour behind New York. Home to CME and CBOE, Chicago is a global center for derivatives trading.
What timezone is UTC in?
UTC operates on its local timezone.
What are the business hours in Chicago?
Standard business hours in Chicago are 8:00 AM - 5:00 PM CST.
Which countries use CST (Central Standard Time)?
CST is used in United States (Central), Canada (Manitoba, Saskatchewan), Mexico, Guatemala, Honduras, El Salvador, and 3 more countries.
Does CST observe daylight saving time?
Yes, CST switches to CDT during summer months.
What are some interesting facts about CST?
CST covers 20 US states fully or partially. Chicago and Houston are the two largest cities in the Central Time Zone.
Which cities are in the UTC timezone?
Major cities in the UTC timezone include London, Dublin, Reykjavik, Accra, Lisbon, Dakar.
What is the UTC offset for UTC?
Coordinated Universal Time (UTC) is at UTC+00:00.
What should I know about the UTC timezone?
UTC is the basis for all civil time zones worldwide. The abbreviation 'UTC' is a compromise between English (CUT) and French (TUC).
When is it midnight in Chicago, what time is it in UTC?
When it is 12:00 AM (midnight) in Chicago (CST), it is +5h later in UTC (UTC).
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