CST to GMT Time Converter - Live World Clock
Convert time between Central Standard Time (CST) and Greenwich Mean Time (GMT). See current time with live clocks.
United States (CST)
United Kingdom (GMT)
Current Time Difference
CST is -6 hours behind GMT
(-6 hours during Daylight Saving Time)
What is CST (Central Standard Time)?
Central Standard Time (CST) covers central North America, UTC-6:00.
Countries and Regions Using CST
Primary Country:
- United States
- States: Texas, Illinois, Wisconsin, Tennessee, Missouri
Also Used By:
- Mexico
- Canada - Manitoba, Saskatchewan
Key Facts about CST:
- ✓ Second largest US timezone
- ✓ Major business centers in Chicago and Houston
- ✓ DST observed March-November
- ✓ Major Cities: Chicago, Houston, Dallas, San Antonio, Austin
- ✓ UTC Offset: -6:00 (-5:00 during CDT)
What is GMT (Greenwich Mean Time)?
Greenwich Mean Time (GMT) is the reference point for world time zones, UTC+0:00.
Countries and Regions Using GMT
Primary Country:
- United Kingdom
Also Used By:
- Ireland
- Portugal
Key Facts about GMT:
- ✓ Prime meridian reference point
- ✓ London financial center
- ✓ Historical timekeeping standard
- ✓ Major Cities: London, Manchester, Birmingham, Leeds, Glasgow
- ✓ UTC Offset: +0:00 (+1:00 during BST)
CST to GMT Time Difference
Standard Time Difference:
CST is -6 hours behind
During Daylight Saving Time:
CST is -6 hours behind
Common Use Cases:
- • Business meetings between United States and United Kingdom
- • International collaboration across timezones
- • Scheduling calls and conferences
Frequently Asked Questions
Which countries are in CST time zone?
United States is the primary country using CST (-6:00). Other countries include: Mexico, Canada.
Which countries are in GMT time zone?
United Kingdom is the primary country using GMT (+0:00). Other countries include: Ireland, Portugal.
How many hours is CST ahead of GMT?
CST is -6 hours behind GMT. During Daylight Saving Time, the difference is -6 hours.
Does United States observe Daylight Saving Time?
Yes, United States observes Daylight Saving Time. During DST, CST changes to CDT (Central Daylight Time) with UTC offset of -5:00.