MST to GMT Time Converter
Convert Mountain Time to Greenwich Mean Time instantly.
Scroll the timeline to check any hour of the day.
Mountain Time
MST
2:24
Greenwich Mean Time
GMT
9:24
MST and GMT are on daylight savings right now, shown as MDT and BST.
Search any city, build a custom world clock, and plan across more time zones and options in the FlutterTime app. Free.
How the MST to GMT time difference works
GMT is 7 hours ahead of MST. Mountain Time (MST) is the US Mountain time zone. Greenwich Mean Time (GMT) is the time zone of the United Kingdom and Ireland. For example, 9:00 AM MST is 4:00 PM GMT. Scroll the timeline above to convert any moment, or use the chart below for a quick reference.
Time difference
7 hours
Daylight saving
Both observe
MST offset
UTC-7
GMT offset
UTC+0
MST to GMT conversion chart
| Mountain Time (MST) | Greenwich Mean Time (GMT) |
|---|---|
| 12:00 AM | 7:00 AM |
| 1:00 AM | 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 | 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 | 12:00 AM +1 day |
| 6:00 PM | 1:00 AM +1 day |
| 7:00 PM | 2:00 AM +1 day |
| 8:00 PM | 3:00 AM +1 day |
| 9:00 PM | 4:00 AM +1 day |
| 10:00 PM | 5:00 AM +1 day |
| 11:00 PM | 6:00 AM +1 day |
Best time to meet
A standard 9 to 5 workday overlaps from 9:00 AM to 10:00 AM MST (4:00 PM to 5:00 PM GMT). Schedule inside that window to catch both coasts during business hours.
Cities in each time zone
Mountain Time (MST)
DenverSalt Lake CityAlbuquerqueBoiseColorado Springs
Greenwich Mean Time (GMT)
LondonDublinLisbonEdinburghManchester
MST to GMT questions
Is GMT ahead of or behind MST?
GMT is 7 hours ahead of MST. So 9:00 AM MST is 4:00 PM GMT, and 5:00 PM MST is 12:00 AM GMT.
What time is it in GMT when it is 12:00 PM MST?
When it is 12:00 PM (noon) MST in Mountain Time, it is 7:00 PM GMT in Greenwich Mean Time.
How many hours difference is there between MST and GMT?
There is a 7 hours difference. Greenwich Mean Time (GMT) runs 7 hours ahead of Mountain Time (MST).
Do MST and GMT observe daylight saving time?
Both Mountain Time and Greenwich Mean Time observe daylight saving time, but they switch on different dates, so the gap briefly shifts by an hour around the spring and autumn changeovers.
What is the best time to schedule a meeting between MST and GMT?
A standard 9-to-5 workday overlaps from 9:00 AM to 10:00 AM MST (4:00 PM to 5:00 PM GMT). Scheduling inside that window keeps the call during business hours in both Mountain Time and Greenwich Mean Time.
Which cities use MST and GMT?
Mountain Time (MST) covers cities such as Denver, Salt Lake City, Albuquerque, Boise, Colorado Springs. Greenwich Mean Time (GMT) covers cities such as London, Dublin, Lisbon, Edinburgh, Manchester.