GMT to CST converter
Central time is 5 hours behind GMT time in summer and 6 hours behind it in winter.
Right now it's in Greenwich (GMT) and in Chicago (CT).
How to convert
To convert GMT to CT, subtract 5 hours while the US is on daylight saving time (March to early November) and subtract 6 hours the rest of the year.
GMT never changes. The UK uses GMT only in winter; in summer it switches to BST (UTC+1). For UK time, use time in London.
Hourly chart
| GMT | Central (CT), summer | Central, winter |
|---|---|---|
| 12:00 AM GMT | 7:00 PM (previous day) CT | 6:00 PM (previous day) CT |
| 1:00 AM GMT | 8:00 PM (previous day) CT | 7:00 PM (previous day) CT |
| 2:00 AM GMT | 9:00 PM (previous day) CT | 8:00 PM (previous day) CT |
| 3:00 AM GMT | 10:00 PM (previous day) CT | 9:00 PM (previous day) CT |
| 4:00 AM GMT | 11:00 PM (previous day) CT | 10:00 PM (previous day) CT |
| 5:00 AM GMT | 12:00 AM CT | 11:00 PM (previous day) CT |
| 6:00 AM GMT | 1:00 AM CT | 12:00 AM CT |
| 7:00 AM GMT | 2:00 AM CT | 1:00 AM CT |
| 8:00 AM GMT | 3:00 AM CT | 2:00 AM CT |
| 9:00 AM GMT | 4:00 AM CT | 3:00 AM CT |
| 10:00 AM GMT | 5:00 AM CT | 4:00 AM CT |
| 11:00 AM GMT | 6:00 AM CT | 5:00 AM CT |
| 12:00 PM GMT | 7:00 AM CT | 6:00 AM CT |
| 1:00 PM GMT | 8:00 AM CT | 7:00 AM CT |
| 2:00 PM GMT | 9:00 AM CT | 8:00 AM CT |
| 3:00 PM GMT | 10:00 AM CT | 9:00 AM CT |
| 4:00 PM GMT | 11:00 AM CT | 10:00 AM CT |
| 5:00 PM GMT | 12:00 PM CT | 11:00 AM CT |
| 6:00 PM GMT | 1:00 PM CT | 12:00 PM CT |
| 7:00 PM GMT | 2:00 PM CT | 1:00 PM CT |
| 8:00 PM GMT | 3:00 PM CT | 2:00 PM CT |
| 9:00 PM GMT | 4:00 PM CT | 3:00 PM CT |
| 10:00 PM GMT | 5:00 PM CT | 4:00 PM CT |
| 11:00 PM GMT | 6:00 PM CT | 5:00 PM CT |
US daylight saving time: March 14 to November 7, 2027.
Questions people ask
Is CST behind GMT?
Central time is 5 hours behind GMT time in summer and 6 hours behind it in winter. The converter above uses the right offset for any date.
What is CST right now?
See the live clocks at the top of this page. They show the current time in Greenwich and Chicago, corrected by an internet time check.
Does GMT change for daylight saving?
No. GMT is always UTC+0.
More conversions
See also: time zone converter · meeting planner · US time zones