CST ↔ GMT Time Converter

Convert CST to GMT instantly. Central Standard Time is UTC-6 / UTC-5 (CDT) and Greenwich Mean Time is UTC+0 / UTC+1 (BST) — a 6h ahead difference. Enter any time in either field — both are fully editable. Use the ⇄ button to swap directions.

🕐 Live Current Times

CST
--:--:--
--
Central Standard Time
6h ahead
⇄ GMT→CST
GMT
--:--:--
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Greenwich Mean Time

⚡ Bidirectional Time Converter

CST (UTC-6 / UTC-5 (CDT)) → GMT (UTC+0 / UTC+1 (BST)) · Difference: 6h ahead (auto-adjusts for DST)

ℹ️ Timezone Details

CST Offset
UTC-6 / UTC-5 (CDT)
GMT Offset
UTC+0 / UTC+1 (BST)
Difference
6h ahead
CST Full Name
Central Standard Time
GMT Full Name
Greenwich Mean Time
Vice Versa
GMT → CST ↗

🤝 Best Meeting Hours Between CST and GMT

Because GMT is 6h ahead CST, use this table to plan calls that fall in reasonable working hours for both sides.

CSTGMTSuitability
7:00 AM1:00 PMGood — early morning start
8:00 AM2:00 PMBest overlap
9:00 AM3:00 PMBest overlap
10:00 AM4:00 PMBest overlap
11:00 AM5:00 PMGood — late afternoon

🏙️ Cities Covered by Each Time Zone

CST Cities
Chicago, Dallas, Houston, Minneapolis, Kansas City, New Orleans
GMT Cities
London, Dublin, Lisbon, Reykjavik, Accra, Abidjan

Note: Some timezones observe Daylight Saving Time, so the offset may change seasonally. The live clocks and converter on this page adjust automatically.

📋 Full 24-Hour Conversion Table — CST to GMT

CST (12h)CST (24h)GMT (12h)GMT (24h)DayType
12:00 AM00:006:00 AM06:00—Night
1:00 AM01:007:00 AM07:00—Night
2:00 AM02:008:00 AM08:00—Night
3:00 AM03:009:00 AM09:00—Night
4:00 AM04:0010:00 AM10:00—Night
5:00 AM05:0011:00 AM11:00—Night
6:00 AM06:0012:00 PM12:00—
7:00 AM07:001:00 PM13:00—
8:00 AM08:002:00 PM14:00—
9:00 AM09:003:00 PM15:00—Business
10:00 AM10:004:00 PM16:00—Business
11:00 AM11:005:00 PM17:00—Business
12:00 PM12:006:00 PM18:00—Business
1:00 PM13:007:00 PM19:00—Business
2:00 PM14:008:00 PM20:00—Business
3:00 PM15:009:00 PM21:00—Business
4:00 PM16:0010:00 PM22:00—Business
5:00 PM17:0011:00 PM23:00—Business
6:00 PM18:0012:00 AM00:00+1 Day
7:00 PM19:001:00 AM01:00+1 Day
8:00 PM20:002:00 AM02:00+1 Day
9:00 PM21:003:00 AM03:00+1 Day
10:00 PM22:004:00 AM04:00+1 DayNight
11:00 PM23:005:00 AM05:00+1 DayNight

Note: this table uses a fixed offset. During Daylight Saving Time the difference may change — use the live converter above which adjusts automatically.

🔗 Related Converters

💡 How to Convert CST to GMT

1
Find the offset — Central Standard Time is UTC-6 / UTC-5 (CDT) and Greenwich Mean Time is UTC+0 / UTC+1 (BST). The difference between them is 6h ahead.
2
Use either input field — Type a time in the CST field to get the GMT equivalent, or type in the GMT field to get the CST time. Both fields are editable.
3
Swap directions — Click ⇄ to instantly swap the conversion direction, or visit the GMT to CST page.
4
Check the table — The 24-hour reference table shows every hour converted, with working hours marked green and late night/early morning marked orange.
5
Watch for day changes — Some times cross midnight, so a "+1 Day" or "-1 Day" note appears to show the date is different in the converted timezone.

❓ FAQ — CST to GMT

What is the time difference between CST and GMT?

Greenwich Mean Time (GMT) is 6h ahead Central Standard Time (CST).

How do I convert CST to GMT?

Use the converter above — type any time in the CST field and the GMT result appears instantly. You can also refer to the 24-hour table on this page.

Is GMT ahead or behind CST?

Greenwich Mean Time (GMT) is 6h ahead Central Standard Time (CST).

How do I convert GMT back to CST?

Simply type in the GMT field in the bidirectional converter above — it works in both directions. Or visit the dedicated GMT to CST converter page.

What is the best overlap time for meetings between CST and GMT?

Use the meeting hours table above to find windows where both timezones fall within reasonable working hours.