GMT to CST — Time Zone Converter
Greenwich Mean Time (GMT, UTC+0) covers the United Kingdom; Central Time (CST, UTC−6) covers the central United States. In standard time, CST is 6 hours behind GMT. Mornings in the central United States overlap with afternoons in the United Kingdom, which keeps both sides inside office hours. Use the live converter below — it applies today's IANA time zone data, including daylight saving time, and gives you a meeting schedule you can paste straight into email or Slack.
GMT to CST, hour by hour (today)
Frequently asked questions
What is the time difference between GMT and CST?+
Greenwich Mean Time (GMT) is UTC+0 and Central Time (CST) is UTC−6, so in standard time CST is 6 hours behind GMT. The gap shifts by an hour around daylight saving transitions, so always check a live converter near the change dates in spring and autumn.
Does GMT or CST observe daylight saving time?+
Greenwich Mean Time observes daylight saving time (GMT in winter, BST in summer). Central Time observes daylight saving time (CST in winter, CDT in summer).
What is the best time for a meeting between GMT and CST?+
Mornings in the central United States overlap with afternoons in the United Kingdom, which keeps both sides inside office hours. The converter above highlights office hours in green for both zones, so you can slide to a time that works for everyone.
How do I share a GMT to CST meeting time by email?+
Pick a time in the converter, log it to the Smart Clipboard, and copy it as bullets, a formatted table, or a one-line question — with both GMT and CST times spelled out so nobody has to do the math.