Chicago to GMT Time Converter
Convert Chicago to Greenwich Mean Time instantly.
Scroll the timeline to check any hour of the day.
Chicago
CST
3:25
Greenwich Mean Time
GMT
9:25
Chicago and GMT are on daylight savings right now, shown as CDT and BST.
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How the Chicago to GMT time difference works
GMT is 6 hours ahead of Chicago. Chicago (CST) is a city in United States. Greenwich Mean Time (GMT) is the time zone of the United Kingdom and Ireland. For example, 9:00 AM Chicago is 3:00 PM GMT. Scroll the timeline above to convert any moment, or use the chart below for a quick reference.
Time difference
6 hours
Daylight saving
Both observe
Chicago offset
UTC-6
GMT offset
UTC+0
Chicago to GMT conversion chart
| Chicago (CST) | Greenwich Mean Time (GMT) |
|---|---|
| 12:00 AM | 6:00 AM |
| 1:00 AM | 7:00 AM |
| 2:00 AM | 8:00 AM |
| 3:00 AM | 9:00 AM |
| 4:00 AM | 10:00 AM |
| 5:00 AM | 11:00 AM |
| 6:00 AM | 12:00 PM |
| 7:00 AM | 1:00 PM |
| 8:00 AM | 2:00 PM |
| 9:00 AM | 3:00 PM |
| 10:00 AM | 4:00 PM |
| 11:00 AM | 5:00 PM |
| 12:00 PM | 6:00 PM |
| 1:00 PM | 7:00 PM |
| 2:00 PM | 8:00 PM |
| 3:00 PM | 9:00 PM |
| 4:00 PM | 10:00 PM |
| 5:00 PM | 11:00 PM |
| 6:00 PM | 12:00 AM +1 day |
| 7:00 PM | 1:00 AM +1 day |
| 8:00 PM | 2:00 AM +1 day |
| 9:00 PM | 3:00 AM +1 day |
| 10:00 PM | 4:00 AM +1 day |
| 11:00 PM | 5:00 AM +1 day |
Best time to meet
A standard 9 to 5 workday overlaps from 9:00 AM to 11:00 AM Chicago (3:00 PM to 5:00 PM GMT). Schedule inside that window to catch both coasts during business hours.
Cities in each time zone
Chicago (CST)
HoustonDallasAustinSan AntonioFort WorthLincoln (Nebraska)
Greenwich Mean Time (GMT)
LondonDublinLisbonEdinburghManchester
Chicago to GMT questions
Is GMT ahead of or behind Chicago?
GMT is 6 hours ahead of Chicago. So 9:00 AM Chicago is 3:00 PM GMT, and 5:00 PM Chicago is 11:00 PM GMT.
What time is it in GMT when it is 12:00 PM Chicago?
When it is 12:00 PM (noon) Chicago in Chicago, it is 6:00 PM GMT in Greenwich Mean Time.
How many hours difference is there between Chicago and GMT?
There is a 6 hours difference. Greenwich Mean Time (GMT) runs 6 hours ahead of Chicago (CST).
Do Chicago and GMT observe daylight saving time?
Both Chicago and Greenwich Mean Time observe daylight saving time, but they switch on different dates, so the gap briefly shifts by an hour around the spring and autumn changeovers.
What is the best time to schedule a meeting between Chicago and GMT?
A standard 9-to-5 workday overlaps from 9:00 AM to 11:00 AM Chicago (3:00 PM to 5:00 PM GMT). Scheduling inside that window keeps the call during business hours in both Chicago and Greenwich Mean Time.
Which cities use Chicago and GMT?
Chicago (CST) covers cities such as Houston, Dallas, Austin, San Antonio, Fort Worth, Lincoln (Nebraska). Greenwich Mean Time (GMT) covers cities such as London, Dublin, Lisbon, Edinburgh, Manchester.