Convert GMT to CST Time - London to Chicago

Convert Greenwich Mean Time (GMT) to Central Standard Time (CST, UTC-6) with our professional time zone converter. Designed for international business meetings between London to Chicago, this tool provides real-time conversion, optimal meeting time suggestions, business hours comparison, and 24-hour conversion tables. Features include live clock displays, meeting scheduler, time zone maps, and daylight saving time handling.

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GMT

Greenwich Mean Time

Current Time

Select Date & Time

→

🇺🇸

CST

Central Standard Time

Current Time

Converted Time

Select a time to convert

Time Difference

Your Local Time

UTC Time

GMT to CST Time Conversion

Central Standard Time is 6 hours behind Greenwich Mean Time

Always accurate • Live conversion

-6h

difference

GMT to CST Time Conversion Chart

Popular Time Conversions

Complete 24-Hour Conversion

Greenwich Mean Time to Central Standard Time full day schedule

🌍 Greenwich Mean Time	🇺🇸 Central Standard Time
12:00 AM 00:00	6:00 PM (previous day) 18:00
1:00 AM 01:00	7:00 PM (previous day) 19:00
2:00 AM 02:00	8:00 PM (previous day) 20:00
3:00 AM 03:00	9:00 PM (previous day) 21:00
4:00 AM 04:00	10:00 PM (previous day) 22:00
5:00 AM 05:00	11:00 PM (previous day) 23:00
6:00 AM 06:00	12:00 AM 00:00
7:00 AM 07:00	1:00 AM 01:00
8:00 AM 08:00	2:00 AM 02:00
9:00 AM 09:00	3:00 AM 03:00
10:00 AM 10:00	4:00 AM 04:00
11:00 AM 11:00	5:00 AM 05:00
12:00 PM 12:00	6:00 AM 06:00
1:00 PM 13:00	7:00 AM 07:00
2:00 PM 14:00	8:00 AM 08:00
3:00 PM 15:00	9:00 AM 09:00
4:00 PM 16:00	10:00 AM 10:00
5:00 PM 17:00	11:00 AM 11:00
6:00 PM 18:00	12:00 PM 12:00
7:00 PM 19:00	1:00 PM 13:00
8:00 PM 20:00	2:00 PM 14:00
9:00 PM 21:00	3:00 PM 15:00
10:00 PM 22:00	4:00 PM 16:00
11:00 PM 23:00	5:00 PM 17:00

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12:00 AM

GMT

→

6:00 PM

CST

(previous day)

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1:00 AM

GMT

→

7:00 PM

CST

(previous day)

🇺🇸

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2:00 AM

GMT

→

8:00 PM

CST

(previous day)

🇺🇸

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3:00 AM

GMT

→

9:00 PM

CST

(previous day)

🇺🇸

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4:00 AM

GMT

→

10:00 PM

CST

(previous day)

🇺🇸

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5:00 AM

GMT

→

11:00 PM

CST

(previous day)

🇺🇸

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6:00 AM

GMT

→

12:00 AM

CST

🇺🇸

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7:00 AM

GMT

→

1:00 AM

CST

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8:00 AM

GMT

→

2:00 AM

CST

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9:00 AM

GMT

→

3:00 AM

CST

🇺🇸

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10:00 AM

GMT

→

4:00 AM

CST

🇺🇸

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11:00 AM

GMT

→

5:00 AM

CST

🇺🇸

🌍

12:00 PM

GMT

→

6:00 AM

CST

🇺🇸

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1:00 PM

GMT

→

7:00 AM

CST

🇺🇸

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2:00 PM

GMT

→

8:00 AM

CST

🇺🇸

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3:00 PM

GMT

→

9:00 AM

CST

🇺🇸

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4:00 PM

GMT

→

10:00 AM

CST

🇺🇸

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5:00 PM

GMT

→

11:00 AM

CST

🇺🇸

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6:00 PM

GMT

→

12:00 PM

CST

🇺🇸

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7:00 PM

GMT

→

1:00 PM

CST

🇺🇸

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8:00 PM

GMT

→

2:00 PM

CST

🇺🇸

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9:00 PM

GMT

→

3:00 PM

CST

🇺🇸

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10:00 PM

GMT

→

4:00 PM

CST

🇺🇸

🌍

11:00 PM

GMT

→

5:00 PM

CST

🇺🇸

Best Meeting Times for GMT and CST

Optimal Collaboration Hours

Best times for GMT ↔ CST meetings and calls

✅ Business hours overlap available

Recommended Meeting Windows

3:00 PM GMT → 9:00 AM CST

Perfect for both time zones

4:00 PM GMT → 10:00 AM CST

Perfect for both time zones

5:00 PM GMT → 11:00 AM CST

Perfect for both time zones

Based on standard business hours (9:00 AM - 6:00 PM) in each time zone

GMT vs CST Time Zone Details

Technical Information & Comparison

Detailed timezone specifications and regional data

🌍

Greenwich Mean Time

Source timezone

UTC Offset 0.0h

Code GMT

Region Global

Status ✓ Active

🇺🇸

Central Standard Time

Target timezone

UTC Offset -6.0h

Code CST

Region Global

Status ✓ Active

Frequently Asked Questions

What is the Greenwich Mean Time (GMT) to Central Standard Time (CST) conversion?

The GMT to CST conversion involves converting Greenwich Mean Time (GMT), UTC+0:00, to Central Standard Time (CST), UTC-6:00. This conversion is essential for coordinating schedules across these two time zones.

How many hours is GMT ahead of CST?

Greenwich Mean Time (GMT) is 6 hours ahead of Central Standard Time (CST). Therefore, at noon GMT, it will be 6:00 AM CST on the same day.

How do I convert GMT time to CST time using your online tool?

To convert GMT to CST using our online tool at iformat.io, simply enter the desired GMT time into the input field. The converter will automatically calculate and display the corresponding CST time, making it quick and easy.

What is the best tool to convert GMT to CST?

The best tool to convert GMT to CST is our free online converter at iformat.io. It provides real-time calculations and is user-friendly, ensuring accurate conversions between these two time zones.

What are the typical working hours for scheduling meetings between GMT and CST?

The typical working hours for scheduling meetings between GMT and CST are generally between 1:00 PM and 5:00 PM, corresponding to 7:00 AM and 11:00 AM CST. This range accommodates working hours in both regions.

Can I use your GMT to CST converter on mobile devices?

Our GMT to CST converter is optimized for mobile devices, including iPhones and Android phones. Through iformat.io, you can easily access it on any device and perform conversions on the go.

How does Daylight Saving Time affect the conversion from CST?

During Daylight Saving Time, Central Standard Time (CST) changes to Central Daylight Time (CDT), which has a +1 hour shift, making it UTC-5:00. Therefore, when converting from GMT during this period, the offset changes, requiring adjustments in scheduling.