GMT to Chicago Time Converter
CST is 6 hours behind GMT. 9:00 AM GMT = 3:00 AM CST.
CST is 6 hours behind GMT at the moment. To convert GMT to Chicago Time, subtract 6 hours from the GMT time: 9:00 AM GMT = 3:00 AM CST.
GMT (GMT) is used in Same offset as UTC. The UK and Ireland use GMT in winter; Iceland, Ghana and Senegal all year. Chicago Time (Chicago time) is used in Chicago, USA.
The UK is on GMT only in winter; in summer it uses BST (UTC+1).
GMT to Chicago Time time conversion table
GMT to Chicago Time on 7 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| GMT | Chicago Time |
|---|---|
| 12:00 AM | 6:00 PM−1 |
| 1:00 AM | 7:00 PM−1 |
| 2:00 AM | 8:00 PM−1 |
| 3:00 AM | 9:00 PM−1 |
| 4:00 AM | 10:00 PM−1 |
| 5:00 AM | 11:00 PM−1 |
| 6:00 AM | 12:00 AM |
| 7:00 AM | 1:00 AM |
| GMT | Chicago Time |
|---|---|
| 8:00 AM | 2:00 AM |
| 9:00 AM | 3:00 AM |
| 10:00 AM | 4:00 AM |
| 11:00 AM | 5:00 AM |
| 12:00 PM | 6:00 AM |
| 1:00 PM | 7:00 AM |
| 2:00 PM | 8:00 AM |
| 3:00 PM | 9:00 AM |
| GMT | Chicago Time |
|---|---|
| 4:00 PM | 10:00 AM |
| 5:00 PM | 11:00 AM |
| 6:00 PM | 12:00 PM |
| 7:00 PM | 1:00 PM |
| 8:00 PM | 2:00 PM |
| 9:00 PM | 3:00 PM |
| 10:00 PM | 4:00 PM |
| 11:00 PM | 5:00 PM |
Conversion table from GMT to Chicago Time for 7 Nov 2026. A tick marks hours that fall between 9 AM and 5 PM in both places. +1 means the next day in Chicago Time, −1 the previous day.
- ✓ marks 9 AM–5 PM in both places
- Greyed times are night in the destination (10 PM–6 AM)
How to convert GMT to Chicago Time
Subtract 6 hours from the GMT time to get Chicago Time.
Example: 9:00 AM GMT = 3:00 AM CST.
Across midnight: 1:00 AM GMT = 7:00 PM CST (previous day). The date changes, so always check the day as well as the hour.
Time difference between GMT and Chicago Time
The time difference between GMT and Chicago Time 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:
- 1 Jan 2026 – 7 Mar 2026: Chicago Time is 6 hours behind of GMT.
- 8 Mar 2026 – 31 Oct 2026: Chicago Time is 5 hours behind of GMT.
- 1 Nov 2026 – 31 Dec 2026: Chicago Time is 6 hours behind of GMT.
GMT and Chicago Time during daylight saving time
- GMT does not observe daylight saving time; it stays on UTC+0 all year.
- Chicago Time next changes on 14 Mar 2027: clocks go forward one hour at 01:59 local time, from CST (UTC−6) to CDT (UTC−5).
Best time for a meeting between GMT and Chicago Time
GMT and Chicago Time share 2 hours of the 9 AM–5 PM working day. Any time between 3:00 PM and 5:00 PM GMT lands between 9:00 AM and 11:00 AM CST, inside working hours for both.
GMT to Chicago Time FAQ
What is the time difference between GMT and Chicago Time?
Right now CST is 6 hours behind GMT. The gap changes 3 times in 2026 because the two sides switch to daylight saving time on different dates.
What is 9 AM GMT in Chicago Time?
9:00 AM GMT is 3:00 AM CST.
What is 12 PM (noon) GMT in Chicago Time?
12:00 PM GMT is 6:00 AM CST.
Is Chicago Time ahead of or behind GMT?
CST is 6 hours behind GMT, so it is earlier in Chicago Time than in GMT.
Does GMT change for daylight saving time?
No. GMT stays on the same offset all year, so conversions never shift for daylight saving time.
Does Chicago Time change for daylight saving time?
Yes. Chicago Time next changes on 14 Mar 2027, when clocks go forward one hour from CST to CDT.
What is the best time for a meeting between GMT and Chicago Time?
GMT and Chicago Time share 2 hours of the 9 AM–5 PM working day. Any time between 3:00 PM and 5:00 PM GMT lands between 9:00 AM and 11:00 AM CST, inside working hours for both.
Related conversions
Convert Chicago Time to GMT
Convert GMT to other time zones
Convert other time zones to Chicago Time
Learn more
Updated 7 November 2026. Time zone data: IANA tz database.