BST to MST Time ConverterFind the Best Time
Convert British Summer Time to Mountain Time instantly.
Scroll the timeline to check any hour of the day.
British Summer Time
BST
2:01
Mountain Time
MST
6:01
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How the BST to MST time difference works
MST is 8 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 1:00 AM MST. Scroll the timeline above to convert any moment, or use the chart below for a quick reference.
Time difference
8 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 | 4:00 PM -1 day |
| 1:00 AM | 5:00 PM -1 day |
| 2:00 AM | 6:00 PM -1 day |
| 3:00 AM | 7:00 PM -1 day |
| 4:00 AM | 8:00 PM -1 day |
| 5:00 AM | 9:00 PM -1 day |
| 6:00 AM | 10:00 PM -1 day |
| 7:00 AM | 11:00 PM -1 day |
| 8:00 AM | 12:00 AM |
| 9:00 AM | 1:00 AM |
| 10:00 AM | 2:00 AM |
| 11:00 AM | 3:00 AM |
| 12:00 PM | 4:00 AM |
| 1:00 PM | 5:00 AM |
| 2:00 PM | 6:00 AM |
| 3:00 PM | 7:00 AM |
| 4:00 PM | 8:00 AM |
| 5:00 PM | 9:00 AM |
| 6:00 PM | 10:00 AM |
| 7:00 PM | 11:00 AM |
| 8:00 PM | 12:00 PM |
| 9:00 PM | 1:00 PM |
| 10:00 PM | 2:00 PM |
| 11:00 PM | 3:00 PM |
Cities in each time zone
British Summer Time (BST)
LondonManchesterBirminghamGlasgowLiverpoolEdinburgh
Mountain Time (MST)
DenverSalt Lake CityAlbuquerqueBoiseColorado Springs
BST to MST questions
Is MST ahead of or behind BST?
MST is 8 hours behind BST. So 9:00 AM BST is 1:00 AM MST, and 5:00 PM BST is 9:00 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 4:00 AM MST in Mountain Time.
How many hours difference is there between BST and MST?
There is a 8 hours difference. Mountain Time (MST) runs 8 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 in British Summer Time and Mountain Time does not overlap, so pick the early morning in the later zone or the late evening in the earlier zone.
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.