Convert British Summer Time to Mountain Time instantly. Scroll the timeline to check any hour of the day.
British Summer TimeBST
10:09PMJul 31
Mountain TimeMST
3:09PMJul 31
MST is on daylight savings (MDT) right now, while BST stays at UTC+1 all year.
Search any city, build a custom world clock, and plan across more time zones and options in the FlutterTime app. Free.
How the BST to MST time difference works
MST is 7 hours behind BST. British Summer Time (BST) is the spring-to-autumn daylight time of the United Kingdom, fixed at one hour ahead of GMT.
Mountain Time (MST) is the US Mountain time zone.
For example, 9:00 AM BST is 2:00 AM MST.
Scroll the timeline above to convert any moment, or use the chart below for a quick reference.
Time difference
7 hours
Daylight saving
MST only
BST offset
UTC+1
MST offset
UTC-7
BST to MST conversion chart
British Summer Time (BST)
Mountain Time (MST)
12:00 AM
5:00 PM -1 day
1:00 AM
6:00 PM -1 day
2:00 AM
7:00 PM -1 day
3:00 AM
8:00 PM -1 day
4:00 AM
9:00 PM -1 day
5:00 AM
10:00 PM -1 day
6:00 AM
11:00 PM -1 day
7:00 AM
12:00 AM
8:00 AM
1:00 AM
9:00 AM
2:00 AM
10:00 AM
3:00 AM
11:00 AM
4:00 AM
12:00 PM
5:00 AM
1:00 PM
6:00 AM
2:00 PM
7:00 AM
3:00 PM
8:00 AM
4:00 PM
9:00 AM
5:00 PM
10:00 AM
6:00 PM
11:00 AM
7:00 PM
12:00 PM
8:00 PM
1:00 PM
9:00 PM
2:00 PM
10:00 PM
3:00 PM
11:00 PM
4:00 PM
Best time to meet
A standard 9 to 5 workday overlaps from 4:00 PM to 5:00 PM BST (9:00 AM to 10:00 AM MST). Schedule inside that window to catch both coasts during business hours.
DenverSalt Lake CityAlbuquerqueBoiseColorado Springs
BST to MST questions
Is MST ahead of or behind BST?
MST is 7 hours behind BST. So 9:00 AM BST is 2:00 AM MST, and 5:00 PM BST is 10:00 AM MST.
What time is it in MST when it is 12:00 PM BST?
When it is 12:00 PM (noon) BST in British Summer Time, it is 5:00 AM MST in Mountain Time.
How many hours difference is there between BST and MST?
There is a 7 hours difference. Mountain Time (MST) runs 7 hours behind British Summer Time (BST).
Do BST and MST observe daylight saving time?
Mountain Time observes daylight saving time but British Summer Time does not, so the difference between them changes by an hour twice a year. BST is itself the daylight-saving period of the United Kingdom: clocks there run on BST from late March to late October and return to GMT in winter.
What is the best time to schedule a meeting between BST and MST?
A standard 9-to-5 workday overlaps from 4:00 PM to 5:00 PM BST (9:00 AM to 10:00 AM MST). Scheduling inside that window keeps the call during business hours in both British Summer Time and Mountain Time.
Which cities use BST and MST?
British Summer Time (BST) covers cities such as London, Manchester, Birmingham, Glasgow, Liverpool, Edinburgh. Mountain Time (MST) covers cities such as Denver, Salt Lake City, Albuquerque, Boise, Colorado Springs.
