Chicago
London
Convert CST to BST
Central Standard Time to British Summer Time — London is 6 hours ahead of Chicago
Quick Facts
Time Difference
+6 hours
CST Full Name
Central Standard Time
BST Full Name
British Summer Time
CST to BST Conversion Table
Related Conversions
About CST and BST Time Zones
CST (Central Standard Time) is UTC-6 and covers cities like Chicago, Dallas, Houston. BST (British Summer Time) is UTC+1 and covers cities like London, Edinburgh, Cardiff.
When it's 12:00 PM (noon) in Chicago (CST), it's 6:00 PM in London (BST). The time difference between CST and BST is 6 hours — London is ahead of Chicago.
The best meeting window is 4:00 PM–5:00 PM CST (9:00 AM–10:00 AM BST).
Daylight Saving Time
CST observes Daylight Saving Time and becomes CDT (Central Daylight Time) during summer months, shifting clocks forward by 1 hour to UTC-5.
During DST transitions, the time difference between CST and BST may shift by ±1 hour. Always verify the current offset above for the most accurate conversion.
Use our world clock tool to compare Chicago and London with a visual timeline, or browse more timezone conversions.
Frequently Asked Questions
What is the time difference between CST and BST?
London (BST) is 6 hours ahead of Chicago (CST). The offset is +6 hours.
Is BST ahead or behind CST?
BST is 6 hours ahead of CST. CST is UTC-5 and BST is UTC+1.
When it's 12:00 PM in Chicago, what time is it in London?
When it's 12:00 PM (noon) in Chicago (CST), it's 6:00 PM in London (BST).
When it's 5:00 PM in Chicago, what time is it in London?
When it's 5:00 PM in Chicago (CST), it's 11:00 PM in London (BST).
Does CST change for Daylight Saving Time?
Yes. CST (Central Standard Time, UTC-6) becomes CDT (Central Daylight Time, UTC-5) in summer, shifting clocks forward 1 hour.