US Central Time to Greenwich Mean Time
Convert times between US Central Time (CST, UTC-6:00) and Greenwich Mean Time (GMT, UTC+0:00). Greenwich Mean Time is 6 hours ahead of US Central Time in standard time.
UTC-6:00 / -5:00→UTC+0:00 / +1:00
Live timezone converterUTC Offset Reference
| Timezone | Abbreviation | Standard offset | DST offset | Country |
|---|---|---|---|---|
| US Central Time | CST / CDT | UTC-6:00 | UTC-5:00 | United States |
| Greenwich Mean Time | GMT / BST | UTC+0:00 | UTC+1:00 | United Kingdom |
* DST offset applies during summer months. Exact transition dates vary by year.
Standard Time Conversion (CST → GMT)
| US Central Time | Greenwich Mean Time |
|---|---|
| 12:00 AM CST | 6:00 AM GMT |
| 6:00 AM CST | 12:00 PM GMT |
| 9:00 AM CST | 3:00 PM GMT |
| 12:00 PM CST | 6:00 PM GMT |
| 3:00 PM CST | 9:00 PM GMT |
| 6:00 PM CST | 12:00 AM (next day) GMT |
| 9:00 PM CST | 3:00 AM (next day) GMT |
Daylight Saving Time (DST) Notes
- US Central Time observes DST. Clocks advance 1 hour to CDT (UTC-5:00) roughly from month 3 to 11.
- Greenwich Mean Time observes DST. Clocks advance 1 hour to BST (UTC+1:00) roughly from month 3 to 10.
Frequently Asked Questions
How do I convert CST to GMT?
Add 6 hours to the CST time to get GMT. For example, 9:00 AM CST = 3:00 PM GMT.
What is the current UTC offset for US Central Time?
US Central Time is UTC-6:00 during standard time (CST) and UTC-5:00 during summer daylight saving time (CDT).
Is Greenwich Mean Time ahead or behind US Central Time?
Greenwich Mean Time is 6 hours ahead of US Central Time in standard time.
When is a good time to schedule a meeting between CST and GMT?
A good overlap window is around 9:00 AM CST / 3:00 PM GMT, which falls within business hours for both timezones.
Related Timezone Conversions
US Central Time → US Eastern TimeCST / ESTUS Central Time → US Mountain TimeCST / MSTUS Central Time → US Pacific TimeCST / PSTUS Central Time → US Alaska TimeCST / AKSTUS Central Time → Hawaii TimeCST / HSTUS Central Time → Canada Atlantic TimeCST / ASTUS Central Time → Central European TimeCST / CETUS Central Time → Eastern European TimeCST / EET
Need the exact current time?
Use the live ToolsHub timezone converter to see current times, DST status, and schedule across time zones.