GMT to CST
GMT (Greenwich Mean Time, UTC+0) and CST (Central Standard Time, UTC−6) are fixed offsets, so the gap never changes: CST is always 6 hours behind GMT. Use the table below to convert any GMT time to CST.
CST is 6 hours behind GMT.
CST is the standard (winter) offset for US Central. From mid-March to early November those clocks run on CDT (UTC−5) for daylight saving.
GMT to CST conversion table
| GMT | CST |
|---|---|
| 12:00 AM | 6:00 PM (−1 day) |
| 1:00 AM | 7:00 PM (−1 day) |
| 2:00 AM | 8:00 PM (−1 day) |
| 3:00 AM | 9:00 PM (−1 day) |
| 4:00 AM | 10:00 PM (−1 day) |
| 5:00 AM | 11:00 PM (−1 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 |
FAQ
What is the GMT to CST time difference?
CST is 6 hours behind GMT. Both are fixed named offsets (GMT is UTC+0, CST is UTC−6), so unlike a city-to-city comparison this gap does not move — the conversion table below is the same every day of the year.
What time is 9 AM GMT in CST?
9 AM GMT is 3:00 AM CST. The full 24-hour table above lists every hour so you can convert any GMT time to CST at a glance.
Is GMT ahead of or behind CST?
CST is 6 hours behind GMT, which is the same as saying GMT is 6 hours ahead of CST.
Does GMT to CST change with daylight saving?
The GMT↔CST offset itself never changes. Note: CST is the standard (winter) offset for US Central. From mid-March to early November those clocks run on CDT (UTC−5) for daylight saving.
Other conversions
CST to GMT · GMT to EST · GMT to PST · GMT to MST · GMT to IST · All zone converters →
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