CST to GMT Time Converter
Convert Central Time to Greenwich Mean Time instantly.
Scroll the timeline to check any hour of the day.
Central Time
CST
3:23
Greenwich Mean Time
GMT
9:23
CST and GMT are on daylight savings right now, shown as CDT and BST.
Search any city, build a custom world clock, and plan across more time zones and options in the FlutterTime app. Free.
How the CST to GMT time difference works
GMT is 6 hours ahead of CST. Central Time (CST) is the US Central time zone. Greenwich Mean Time (GMT) is the time zone of the United Kingdom and Ireland. For example, 9:00 AM CST 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
CST offset
UTC-6
GMT offset
UTC+0
CST to GMT conversion chart
| Central Time (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 CST (3:00 PM to 5:00 PM GMT). Schedule inside that window to catch both coasts during business hours.
Cities in each time zone
Central Time (CST)
ChicagoHoustonDallasAustinNew OrleansMinneapolis
Greenwich Mean Time (GMT)
LondonDublinLisbonEdinburghManchester
CST to GMT questions
Is GMT ahead of or behind CST?
GMT is 6 hours ahead of CST. So 9:00 AM CST is 3:00 PM GMT, and 5:00 PM CST is 11:00 PM GMT.
What time is it in GMT when it is 12:00 PM CST?
When it is 12:00 PM (noon) CST in Central Time, it is 6:00 PM GMT in Greenwich Mean Time.
How many hours difference is there between CST and GMT?
There is a 6 hours difference. Greenwich Mean Time (GMT) runs 6 hours ahead of Central Time (CST).
Do CST and GMT observe daylight saving time?
Both Central Time 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 CST and GMT?
A standard 9-to-5 workday overlaps from 9:00 AM to 11:00 AM CST (3:00 PM to 5:00 PM GMT). Scheduling inside that window keeps the call during business hours in both Central Time and Greenwich Mean Time.
Which cities use CST and GMT?
Central Time (CST) covers cities such as Chicago, Houston, Dallas, Austin, New Orleans, Minneapolis. Greenwich Mean Time (GMT) covers cities such as London, Dublin, Lisbon, Edinburgh, Manchester.