Boulder to Chicago Time Converter
Quick answers
Selected conversion
6:00 am06:00 MDT (UTC-6), Oct 12, 2026 = 7:00 am07:00 CDT (UTC-5), Oct 12, 2026
Boulder is 1 hour behind Chicago.
How the time difference changes
Normally, Boulder is 1 hour behind Chicago. Briefly around seasonal clock changes, Boulder and Chicago have the same time or Boulder is 2 hours behind Chicago.
Typically, working hours of 9:00 am to 5:00 pm in Boulder correspond to 10:00 am to 6:00 pm in Chicago.Typically, working hours of 09:00 to 17:00 in Boulder correspond to 10:00 to 18:00 in Chicago.
Compare Boulder time with Chicago time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.
Time Difference
MDT (Mountain Daylight Time) is 1 hour behind CDT (Central Daylight Time).
6:00 am06:00 in Boulder, CO, USA is 7:00 am07:00 in Chicago, IL, USA
Boulder to Chicago call time
Best time for a conference call or a meeting is between 9am-4pm09:00-16:00 in Boulder which corresponds to 10am-5pm10:00-17:00 in Chicago
6:00 am06:00 MDT (Mountain Daylight Time) (Boulder, CO, USA). Offset UTC -6:00 hours
7:00 am07:00 CDT (Central Daylight Time) (Chicago, IL, USA). Offset UTC -5:00 hours
6:00 am06:00 Boulder, CO, USA / 7:00 am07:00 Chicago, IL, USA
Choose an hour to update the converter. Day labels such as “next day” or “+1” are relative to the selected date in the first column. Use Up and Down arrow keys, Home or End to move between hours, then Enter or Space to select.
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Boulder Time Zone and Facts
Time Zone
MST – Mountain Standard Time, UTC-7 (standard time)
Boulder Facts
Chicago Time Zone and Facts
Time Zone
CST – Central Standard Time, UTC-6 (standard time)