CST to GMT Converter
GMT is 6 hours ahead of CST. 9:00 AM CST = 3:00 PM GMT.
GMT is 6 hours ahead of CST at the moment. To convert CST to GMT, add 6 hours to the CST time: 9:00 AM CST = 3:00 PM GMT.
CST (Central Time) is used in Chicago, Dallas, Houston, Minneapolis, New Orleans, Winnipeg; Mexico City and Central America use UTC−6 all year. GMT (GMT) is used in Same offset as UTC. The UK and Ireland use GMT in winter; Iceland, Ghana and Senegal all year.
CST here means North American Central Standard Time, not China Standard Time. The UK is on GMT only in winter; in summer it uses BST (UTC+1).
CST to GMT time conversion table
CST to GMT on 6 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| CST | GMT | Day |
|---|---|---|
| 12:00 AM CST | 6:00 AM GMT | — |
| 1:00 AM CST | 7:00 AM GMT | — |
| 2:00 AM CST | 8:00 AM GMT | — |
| 3:00 AM CST | 9:00 AM GMT | — |
| 4:00 AM CST | 10:00 AM GMT | — |
| 5:00 AM CST | 11:00 AM GMT | — |
| 6:00 AM CST | 12:00 PM GMT | — |
| 7:00 AM CST | 1:00 PM GMT | — |
| 8:00 AM CST | 2:00 PM GMT | — |
| 9:00 AM CST | 3:00 PM GMT | work hours |
| 10:00 AM CST | 4:00 PM GMT | work hours |
| 11:00 AM CST | 5:00 PM GMT | — |
| 12:00 PM CST | 6:00 PM GMT | — |
| 1:00 PM CST | 7:00 PM GMT | — |
| 2:00 PM CST | 8:00 PM GMT | — |
| 3:00 PM CST | 9:00 PM GMT | — |
| 4:00 PM CST | 10:00 PM GMT | night |
| 5:00 PM CST | 11:00 PM GMT | night |
| 6:00 PM CST | 12:00 AM GMT | next day |
| 7:00 PM CST | 1:00 AM GMT | next day |
| 8:00 PM CST | 2:00 AM GMT | next day |
| 9:00 PM CST | 3:00 AM GMT | next day |
| 10:00 PM CST | 4:00 AM GMT | next day |
| 11:00 PM CST | 5:00 AM GMT | next day |
- Work rows — 9 AM–5 PM in both places
- Night in the destination (10 PM–6 AM)
How to convert CST to GMT
Add 6 hours to the CST time to get GMT.
Example: 9:00 AM CST = 3:00 PM GMT.
Across midnight: 10:00 PM CST = 4:00 AM GMT (next day). The date changes, so always check the day as well as the hour.
Time difference between CST and GMT
The time difference between CST and GMT is not the same all year, because the two sides change for daylight saving time on different dates. In 2026 it works out like this:
- 31 Dec 2025 – 7 Mar 2026: GMT is 6 hours ahead of CST.
- 8 Mar 2026 – 31 Oct 2026: GMT is 5 hours ahead of CST.
- 1 Nov 2026 – 30 Dec 2026: GMT is 6 hours ahead of CST.
CST and GMT during daylight saving time
- CST next changes on 14 Mar 2027: clocks go forward one hour at 01:59 local time, from CST (UTC−6) to CDT (UTC−5).
- GMT does not observe daylight saving time; it stays on UTC+0 all year.
Best time for a meeting between CST and GMT
CST and GMT share 2 hours of the 9 AM–5 PM working day. Any time between 9:00 AM and 11:00 AM CST lands between 3:00 PM and 5:00 PM GMT, inside working hours for both.
CST to GMT FAQ
What is the time difference between CST and GMT?
Right now GMT is 6 hours ahead of CST. The gap changes 3 times in 2026 because the two sides switch to daylight saving time on different dates.
What is 9 AM CST in GMT?
9:00 AM CST is 3:00 PM GMT.
What is 12 PM (noon) CST in GMT?
12:00 PM CST is 6:00 PM GMT.
Is GMT ahead of or behind CST?
GMT is 6 hours ahead of CST, so it is later in GMT than in CST.
Does CST change for daylight saving time?
Yes. CST next changes on 14 Mar 2027, when clocks go forward one hour from CST to CDT.
Does GMT change for daylight saving time?
No. GMT stays on the same offset all year, so conversions never shift for daylight saving time.
What is the best time for a meeting between CST and GMT?
CST and GMT share 2 hours of the 9 AM–5 PM working day. Any time between 9:00 AM and 11:00 AM CST lands between 3:00 PM and 5:00 PM GMT, inside working hours for both.
Is CT the same as CST?
CST is the winter (standard) name of Central Time (CT). From March to November the same clocks are called CDT. This converter always uses the one in force on the date you choose.
Related conversions
Convert GMT to CST
Convert CST to other time zones
Convert other time zones to GMT
Learn more
Updated 6 November 2026. Time zone data: IANA tz database.