Chicago to Toronto
+1hChicago
CDTSOURCEToronto
EDTGreen rows indicate typical business hours (9 AM - 5 PM)
CDT and EDT on the World Map
The map below highlights the CDT (Central Standard Time) and EDT (Eastern Standard 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.
EST – Eastern Standard Time
UTC-05:00Eastern Standard Time (EST) is the time zone for the eastern United States and Canada, 5 hours behind UTC.
- •EST is the most widely used time zone in the United States by population.
- •The New York Stock Exchange (NYSE) and NASDAQ operate on Eastern Time, opening at 9:30 AM EST.
- •23 US states are fully or partially in the Eastern Time Zone.
- •EST was established by the Standard Time Act of 1918.
- •Over 47% of the US population lives in the Eastern Time Zone.
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.
About Toronto
WikipediaToronto shares Eastern Time (EST/EDT) with New York. As Canada's largest city and financial center, Toronto's TSX is among North America's largest stock exchanges.
Toronto is the most multicultural city in the world - over 50% of residents were born outside Canada.
Comparing Time Zones: Chicago and Toronto
Chicago runs on Central Daylight Time (CDT) at UTC-05:00, currently observing daylight saving time. Toronto runs on Eastern Daylight Time (EDT) at UTC-04:00, also currently on daylight saving time. That puts Chicago 1 hour ahead of Toronto — a difference of +1h at the current offsets.
In practice, when it is 9:00 AM in Chicago it is 10:00 AM in Toronto. Midnight in Chicago is 1:00 AM in Toronto. Because both zones shift for daylight saving, the gap between them only changes during the few weeks each year when their transition dates differ.
Chicago to Toronto time conversion table
| Chicago (CDT) | Toronto (EDT) | Day |
|---|---|---|
| 12:00 AM | 1:00 AM | same day |
| 6:00 AM | 7:00 AM | same day |
| 7:00 AM | 8:00 AM | same day |
| 8:00 AM | 9:00 AM | same day |
| 9:00 AM | 10:00 AM | same day |
| 12:00 PM | 1:00 PM | same day |
| 3:00 PM | 4:00 PM | same day |
| 5:00 PM | 6:00 PM | same day |
| 6:00 PM | 7:00 PM | same day |
| 9:00 PM | 10:00 PM | same day |
Why people convert Chicago to Toronto time
- Scheduling a call from Chicago to Toronto: a 10:00 AM start in Chicago lands at 11:00 AM in Toronto, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both Chicago and Toronto are inside the 9-to-5 working day between 9:00 AM and 4:00 PM CDT time (10:00 AM–5:00 PM EDT). That is roughly 7 hours of usable overlap.
- Watching a live event or market open: Chicago viewers need 10:00 AM in Toronto to catch a 9:00 AM start there, and 11:00 PM if the event is anchored to Chicago.
- Always state the zone abbreviation, not just the hour. "3:00 PM CDT" is unambiguous; "3 PM" across a +1h gap is not.
- Block 9:00 AM–4:00 PM CDT as the recurring meeting window if you work primarily from Chicago and need Toronto 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 +1h gap.
- Toronto: Clocks fall back on Sun, Nov 1, 2026. Any meeting series spanning that date will shift by an hour in local time.
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 EST (Eastern Standard Time)
Eastern Standard Time (EST) is observed during the winter months in the eastern part of North America. It covers 23 US states and parts of Canada including Ontario and Quebec. EST is the most populous time zone in the United States, home to major financial centers like New York City and global organizations headquartered in Washington D.C. During daylight saving time (March–November), clocks shift to Eastern Daylight Time (EDT, UTC-04:00). The time zone also covers parts of the Caribbean and Central America including Panama, Jamaica, and the Cayman Islands.
Best time to call between Chicago and Toronto
Both Chicago and Toronto sit inside the 9 AM – 5 PM working day between 9:00 AM–4:00 PM CDT, which is 10:00 AM–5:00 PM EDT. That gives roughly 7 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
Chicago and Toronto share 7 hours of working-hours overlap (9:00 AM–4:00 PM CDT), so scheduling a live meeting is straightforward.
Chicago is 1 hour ahead of Toronto (CDT UTC-05:00 → EDT UTC-04:00). The shared working window is 9:00 AM–4:00 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
Toronto
☀ Currently in DST
Standard: UTC-05:00 · DST: UTC-04:00
Clocks fall back on Sun, Nov 1, 2026
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 Toronto?
Chicago (CDT, UTC-05:00) is 1 hour ahead of Toronto (EDT, UTC-04:00). The gap is currently +1h.
How do I convert Chicago time to Toronto time?
Add +1h to Chicago local time. For example, 9:00 AM in Chicago is 10:00 AM in Toronto.
What time is it in Toronto right now?
Toronto uses EDT at UTC-04:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +1h offset from Chicago.
What is the best time to call Toronto from Chicago?
Call between 9:00 AM and 4:00 PM CDT — that maps to 10:00 AM–5:00 PM EDT and keeps both parties inside the working day.
Which is ahead, Chicago or Toronto?
Chicago is 1 hour ahead of Toronto. When it is 12:00 PM in Chicago it is 1:00 PM in Toronto.
Do Chicago and Toronto use different time zones?
Chicago (USA) uses CDT at UTC-05:00, while Toronto (Canada) uses EDT at UTC-04:00. The IANA identifiers are America/Chicago and America/Toronto.
Does daylight saving time affect the Chicago–Toronto difference?
Both zones observe DST, so the difference stays at +1h for most of the year and only changes during the weeks when their transition dates do not line up.
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 Toronto?
Not normally. The +1h gap only pushes the date over for late-evening times.
What is the time difference between Chicago and Toronto?
Toronto is +1h 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 Toronto in?
Toronto shares Eastern Time (EST/EDT) with New York. As Canada's largest city and financial center, Toronto's TSX is among North America's largest stock exchanges.
What are the business hours in Chicago?
Standard business hours in Chicago are 8:00 AM - 5:00 PM CST.
What are the business hours in Toronto?
Standard business hours in Toronto are 9:00 AM - 5:00 PM EST.
What is the best time to schedule a call between Chicago and Toronto?
The best overlap for a call is when both cities are in business hours. Chicago works 8:00 AM - 5:00 PM CST and Toronto works 9:00 AM - 5:00 PM EST (+1h difference). Try scheduling during the overlapping window for maximum convenience.
What currencies are used in Chicago and Toronto?
Chicago uses USD ($) while Toronto uses CAD (C$). Check current exchange rates when planning travel or business between these cities.
How do Chicago and Toronto compare in size?
Chicago has a population of approximately 2.7 million (metro: 9.5 million), while Toronto has approximately 2.9 million (metro: 6.3 million).
What are the major landmarks in Chicago and Toronto?
Chicago is known for Willis Tower, Millennium Park, Cloud Gate (The Bean). Toronto is famous for CN Tower, Royal Ontario Museum, Ripley's Aquarium.
Do Chicago and Toronto have stock exchanges?
Yes. Chicago has the CME (Chicago Mercantile Exchange), CBOE and Toronto has the TSX (Toronto Stock Exchange). The +1h time difference affects trading hour overlaps between these exchanges.
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 EST timezone?
Major cities in the EST timezone include New York City, Washington D.C., Miami, Toronto, Philadelphia, Atlanta, Boston, Montreal.
What is the UTC offset for EST?
Eastern Standard Time (EST) is at UTC-05:00. During daylight saving time, it shifts to EDT.
What should I know about the EST timezone?
EST is the most widely used time zone in the United States by population. The New York Stock Exchange (NYSE) and NASDAQ operate on Eastern Time, opening at 9:30 AM EST.
When is it midnight in Chicago, what time is it in Toronto?
When it is 12:00 AM (midnight) in Chicago (CST), it is +1h later in Toronto (EST).
Related Developer Tools
Explore more tools that work great with timezone conversions for international teams:
Related Timezone Conversions
More Chicago time conversions
- chicago to new york
- chicago to los angeles
- chicago to denver
- chicago to honolulu
- chicago to anchorage
- chicago to cst
- chicago to cdt
- chicago to vancouver
- chicago to mexico city
- chicago to sao paulo
- chicago to buenos aires
- chicago to bogota
- chicago to lima
- chicago to santiago
- chicago to london
- chicago to dubai
- chicago to tokyo
- chicago to singapore
- chicago to sydney
- chicago to paris
- chicago to delhi
- chicago to mumbai
- chicago to berlin
- chicago to hong kong
- chicago to kathmandu
- new york to chicago
- london to chicago
- dubai to chicago
- tokyo to chicago
- singapore to chicago
- sydney to chicago
- los angeles to chicago
- paris to chicago
- delhi to chicago
- mumbai to chicago
See every conversion from Chicago →·See every conversion from Toronto →