BST to Chicago Time Converter
CST is 6 hours behind GMT. 9:00 AM GMT = 3:00 AM CST.
CST is 6 hours behind GMT at the moment. To convert BST to Chicago Time, subtract 6 hours from the BST time: 9:00 AM GMT = 3:00 AM CST.
BST (British Time) is used in United Kingdom from late March to late October. Chicago Time (Chicago time) is used in Chicago, USA.
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.
BST to Chicago Time time conversion table
BST to Chicago Time on 7 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| BST | Chicago Time |
|---|---|
| 12:00 AM | 6:00 PM−1 |
| 1:00 AM | 7:00 PM−1 |
| 2:00 AM | 8:00 PM−1 |
| 3:00 AM | 9:00 PM−1 |
| 4:00 AM | 10:00 PM−1 |
| 5:00 AM | 11:00 PM−1 |
| 6:00 AM | 12:00 AM |
| 7:00 AM | 1:00 AM |
| BST | Chicago Time |
|---|---|
| 8:00 AM | 2:00 AM |
| 9:00 AM | 3:00 AM |
| 10:00 AM | 4:00 AM |
| 11:00 AM | 5:00 AM |
| 12:00 PM | 6:00 AM |
| 1:00 PM | 7:00 AM |
| 2:00 PM | 8:00 AM |
| 3:00 PM | 9:00 AM |
| BST | Chicago Time |
|---|---|
| 4:00 PM | 10:00 AM |
| 5:00 PM | 11:00 AM |
| 6:00 PM | 12:00 PM |
| 7:00 PM | 1:00 PM |
| 8:00 PM | 2:00 PM |
| 9:00 PM | 3:00 PM |
| 10:00 PM | 4:00 PM |
| 11:00 PM | 5:00 PM |
Conversion table from BST to Chicago Time for 7 Nov 2026. A tick marks hours that fall between 9 AM and 5 PM in both places. +1 means the next day in Chicago Time, −1 the previous day.
- ✓ marks 9 AM–5 PM in both places
- Greyed times are night in the destination (10 PM–6 AM)
How to convert BST to Chicago Time
Subtract 6 hours from the BST time to get Chicago Time.
Example: 9:00 AM GMT = 3:00 AM CST.
Across midnight: 1:00 AM GMT = 7:00 PM CST (previous day). The date changes, so always check the day as well as the hour.
Time difference between BST and Chicago Time
The time difference between BST and Chicago Time 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:
- 1 Jan 2026 – 7 Mar 2026: Chicago Time is 6 hours behind of BST.
- 8 Mar 2026 – 28 Mar 2026: Chicago Time is 5 hours behind of BST.
- 29 Mar 2026 – 24 Oct 2026: Chicago Time is 6 hours behind of BST.
- 25 Oct 2026 – 31 Oct 2026: Chicago Time is 5 hours behind of BST.
- 1 Nov 2026 – 31 Dec 2026: Chicago Time is 6 hours behind of BST.
BST and Chicago Time during daylight saving time
- 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).
- 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).
Best time for a meeting between BST and Chicago Time
BST and Chicago Time share 2 hours of the 9 AM–5 PM working day. Any time between 3:00 PM and 5:00 PM GMT lands between 9:00 AM and 11:00 AM CST, inside working hours for both.
BST to Chicago Time FAQ
What is the time difference between BST and Chicago Time?
Right now CST is 6 hours behind GMT. The gap changes 5 times in 2026 because the two sides switch to daylight saving time on different dates.
What is 9 AM BST in Chicago Time?
9:00 AM GMT is 3:00 AM CST.
What is 12 PM (noon) BST in Chicago Time?
12:00 PM GMT is 6:00 AM CST.
Is Chicago Time ahead of or behind BST?
CST is 6 hours behind GMT, so it is earlier in Chicago Time than in BST.
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.
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.
What is the best time for a meeting between BST and Chicago Time?
BST and Chicago Time share 2 hours of the 9 AM–5 PM working day. Any time between 3:00 PM and 5:00 PM GMT lands between 9:00 AM and 11:00 AM CST, inside working hours for both.
Related conversions
Convert Chicago Time to BST
Convert BST to other time zones
Convert other time zones to Chicago Time
Learn more
Updated 7 November 2026. Time zone data: IANA tz database.