CST to GMT Converter

Central Standard Time → Greenwich Mean Time · CST is 6 hours behind GMT

CST
—
GMT
—

CST and GMT are the same time

CST to GMT Conversion Table

CSTGMT
12:00 AM12:00 AM
1:00 AM1:00 AM
2:00 AM2:00 AM
3:00 AM3:00 AM
4:00 AM4:00 AM
5:00 AM5:00 AM
6:00 AM6:00 AM
7:00 AM7:00 AM
8:00 AM8:00 AM
9:00 AM9:00 AM
10:00 AM10:00 AM
11:00 AM11:00 AM
12:00 PM12:00 PM
1:00 PM1:00 PM
2:00 PM2:00 PM
3:00 PM3:00 PM
4:00 PM4:00 PM
5:00 PM5:00 PM
6:00 PM6:00 PM
7:00 PM7:00 PM
8:00 PM8:00 PM
9:00 PM9:00 PM
10:00 PM10:00 PM
11:00 PM11:00 PM

Green rows = business hours overlap (9:00 AM – 6:00 PM CST)

Major CST Cities
  • Chicago, IL
  • Houston, TX
  • Dallas, TX
  • Minneapolis, MN
  • Kansas City, MO
  • New Orleans, LA
Major GMT Cities
  • London
  • Dublin
  • Lisbon
  • Reykjavik
  • Accra
  • Dakar
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CST vs GMT — What You Need to Know

CST (Central Standard Time) is UTC-6 / GMT-6, covering Chicago, Houston, and Dallas. In summer it becomes CDT (UTC-5).

GMT (Greenwich Mean Time) is UTC+0. London uses GMT in winter and BST (UTC+1) from late March to late October.

9:00 AM in Chicago is 3:00 PM GMT in London — good afternoon overlap for transatlantic business.

Frequently Asked Questions

How do I convert CST to GMT?

To convert CST to GMT: add 6 hours. Example: 9:00 AM CST = 15:00 GMT. During CDT (US summer, UTC-5), add 5 hours: 9:00 AM CDT = 14:00 GMT. During UK summer (BST, UTC+1), add 7 hours from CST to get BST.

What is 9 AM CST in GMT?

9:00 AM CST is 15:00 GMT (3:00 PM). During CDT (US summer), 9:00 AM CDT is 14:00 GMT (2:00 PM).

What is the CST offset from GMT?

CST (Central Standard Time) is GMT-6, meaning it is 6 hours behind Greenwich Mean Time. During US Daylight Saving Time, Central Time uses CDT (GMT-5).