Chicago Time to BST Converter
GMT is 6 hours ahead of CST. 9:00 AM CST = 3:00 PM GMT.
GMT is 6 hours ahead of CST at the moment. To convert Chicago Time to BST, add 6 hours to the Chicago Time time: 9:00 AM CST = 3:00 PM GMT.
Chicago Time (Chicago time) is used in Chicago, USA. BST (British Time) is used in United Kingdom from late March to late October.
BST here means British Summer Time, not Bangladesh Standard Time. BST (British Summer Time) is not in force right now: United Kingdom from late March to late October is currently on GMT. This page uses whichever name applies on the date you pick, so the numbers below say GMT.
Chicago Time to BST time conversion table
Chicago Time to BST on 7 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| Chicago Time | BST | Day |
|---|---|---|
| 12:00 AM CST | 6:00 AM GMT | — |
| 1:00 AM CST | 7:00 AM GMT | — |
| 2:00 AM CST | 8:00 AM GMT | — |
| 3:00 AM CST | 9:00 AM GMT | — |
| 4:00 AM CST | 10:00 AM GMT | — |
| 5:00 AM CST | 11:00 AM GMT | — |
| 6:00 AM CST | 12:00 PM GMT | — |
| 7:00 AM CST | 1:00 PM GMT | — |
| 8:00 AM CST | 2:00 PM GMT | — |
| 9:00 AM CST | 3:00 PM GMT | work hours |
| 10:00 AM CST | 4:00 PM GMT | work hours |
| 11:00 AM CST | 5:00 PM GMT | — |
| 12:00 PM CST | 6:00 PM GMT | — |
| 1:00 PM CST | 7:00 PM GMT | — |
| 2:00 PM CST | 8:00 PM GMT | — |
| 3:00 PM CST | 9:00 PM GMT | — |
| 4:00 PM CST | 10:00 PM GMT | night |
| 5:00 PM CST | 11:00 PM GMT | night |
| 6:00 PM CST | 12:00 AM GMT | next day |
| 7:00 PM CST | 1:00 AM GMT | next day |
| 8:00 PM CST | 2:00 AM GMT | next day |
| 9:00 PM CST | 3:00 AM GMT | next day |
| 10:00 PM CST | 4:00 AM GMT | next day |
| 11:00 PM CST | 5:00 AM GMT | next day |
- Work rows — 9 AM–5 PM in both places
- Night in the destination (10 PM–6 AM)
How to convert Chicago Time to BST
Add 6 hours to the Chicago Time time to get BST.
Example: 9:00 AM CST = 3:00 PM GMT.
Across midnight: 10:00 PM CST = 4:00 AM GMT (next day). The date changes, so always check the day as well as the hour.
Time difference between Chicago Time and BST
The time difference between Chicago Time and BST 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:
- 31 Dec 2025 – 7 Mar 2026: BST is 6 hours ahead of Chicago Time.
- 8 Mar 2026 – 27 Mar 2026: BST is 5 hours ahead of Chicago Time.
- 28 Mar 2026 – 23 Oct 2026: BST is 6 hours ahead of Chicago Time.
- 24 Oct 2026 – 31 Oct 2026: BST is 5 hours ahead of Chicago Time.
- 1 Nov 2026 – 30 Dec 2026: BST is 6 hours ahead of Chicago Time.
Chicago Time and BST during daylight saving time
- 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).
- BST next changes on 28 Mar 2027: clocks go forward one hour at 00:59 local time, from GMT (UTC+0) to BST (UTC+1).
Best time for a meeting between Chicago Time and BST
Chicago Time and BST share 2 hours of the 9 AM–5 PM working day. Any time between 9:00 AM and 11:00 AM CST lands between 3:00 PM and 5:00 PM GMT, inside working hours for both.
Chicago Time to BST FAQ
What is the time difference between Chicago Time and BST?
Right now GMT is 6 hours ahead of CST. The gap changes 5 times in 2026 because the two sides switch to daylight saving time on different dates.
What is 9 AM Chicago Time in BST?
9:00 AM CST is 3:00 PM GMT.
What is 12 PM (noon) Chicago Time in BST?
12:00 PM CST is 6:00 PM GMT.
Is BST ahead of or behind Chicago Time?
GMT is 6 hours ahead of CST, so it is later in BST than in Chicago 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.
Does BST change for daylight saving time?
Yes. BST next changes on 28 Mar 2027, when clocks go forward one hour from GMT to BST.
What is the best time for a meeting between Chicago Time and BST?
Chicago Time and BST share 2 hours of the 9 AM–5 PM working day. Any time between 9:00 AM and 11:00 AM CST lands between 3:00 PM and 5:00 PM GMT, inside working hours for both.
Related conversions
Convert BST to Chicago Time
Convert Chicago Time to other time zones
Convert other time zones to BST
Learn more
Updated 7 November 2026. Time zone data: IANA tz database.