GMT to CST Converter – Greenwich Mean Time to Central Standard Time
CST is 6 hours behind GMT. GMT (Greenwich Mean Time) is UTC+0, switching to BST (UTC+1) during daylight saving, while CST (Central Standard Time) is UTC-6, switching to CDT (UTC-5) during daylight saving. The live clocks below show the current time in both zones, updated every second.
GMT to CST Conversion Table (Hour by Hour)
Standard-time conversion from Greenwich Mean Time to Central Standard Time. During daylight saving periods the offset shifts by one hour - the live clocks above always show the correct current time.
| GMT (UTC+0) | CST (UTC-6) |
|---|---|
| 12:00 AM | 6:00 PM (previous day) |
| 1:00 AM | 7:00 PM (previous day) |
| 2:00 AM | 8:00 PM (previous day) |
| 3:00 AM | 9:00 PM (previous day) |
| 4:00 AM | 10:00 PM (previous day) |
| 5:00 AM | 11:00 PM (previous day) |
| 6:00 AM | 12:00 AM |
| 7:00 AM | 1:00 AM |
| 8:00 AM | 2:00 AM |
| 9:00 AM | 3:00 AM |
| 10:00 AM | 4:00 AM |
| 11:00 AM | 5:00 AM |
| 12:00 PM | 6:00 AM |
| 1:00 PM | 7:00 AM |
| 2:00 PM | 8:00 AM |
| 3:00 PM | 9:00 AM |
| 4:00 PM | 10:00 AM |
| 5:00 PM | 11:00 AM |
| 6:00 PM | 12:00 PM |
| 7:00 PM | 1:00 PM |
| 8:00 PM | 2:00 PM |
| 9:00 PM | 3:00 PM |
| 10:00 PM | 4:00 PM |
| 11:00 PM | 5:00 PM |
Frequently Asked Questions
What is the time difference between GMT and CST?
CST is 6 hours behind GMT. GMT (Greenwich Mean Time) is UTC+0 and CST (Central Standard Time) is UTC-6.
How do I convert GMT to CST?
Take your time in GMT and subtract 6 hours. For example, 9:00 AM GMT is 3:00 AM in CST. The live clocks at the top of this page always show the current conversion.
Does daylight saving time affect GMT to CST conversion?
Yes. GMT switches to BST (UTC+1) in summer and CST switches to CDT (UTC-5) in summer, so the gap between the two zones changes during DST periods. The live clocks on this page use the IANA timezone database and always reflect the correct current offset automatically.
What is the best time for a meeting between GMT and CST?
Look for overlap between 9:00 AM-6:00 PM working hours in both zones using the conversion table above. CST is 6 hours behind GMT, so there is normally several hours of business-hours overlap.