GMT to MST time difference
MST is 6 hours behind GMT right now. The difference changes between 7 hours and 6 hours during the year because of daylight saving time.
Quick examples: 9:00 AM GMT = 3:00 AM MST · 12:00 PM GMT = 6:00 AM MST · 5:00 PM GMT = 11:00 AM MST
GMT to MST conversion table
| Greenwich Mean Time (GMT) | Mountain Time (MST) |
|---|---|
| 12:00 AM GMT | 6:00 PM MST (previous day) |
| 1:00 AM GMT | 7:00 PM MST (previous day) |
| 2:00 AM GMT | 8:00 PM MST (previous day) |
| 3:00 AM GMT | 9:00 PM MST (previous day) |
| 4:00 AM GMT | 10:00 PM MST (previous day) |
| 5:00 AM GMT | 11:00 PM MST (previous day) |
| 6:00 AM GMT | 12:00 AM MST |
| 7:00 AM GMT | 1:00 AM MST |
| 8:00 AM GMT | 2:00 AM MST |
| 9:00 AM GMT | 3:00 AM MST |
| 10:00 AM GMT | 4:00 AM MST |
| 11:00 AM GMT | 5:00 AM MST |
| 12:00 PM GMT | 6:00 AM MST |
| 1:00 PM GMT | 7:00 AM MST |
| 2:00 PM GMT | 8:00 AM MST |
| 3:00 PM GMT | 9:00 AM MST |
| 4:00 PM GMT | 10:00 AM MST |
| 5:00 PM GMT | 11:00 AM MST |
| 6:00 PM GMT | 12:00 PM MST |
| 7:00 PM GMT | 1:00 PM MST |
| 8:00 PM GMT | 2:00 PM MST |
| 9:00 PM GMT | 3:00 PM MST |
| 10:00 PM GMT | 4:00 PM MST |
| 11:00 PM GMT | 5:00 PM MST |
How to convert GMT to MST
- Pick a date and time in Greenwich Mean Time.
- The matching Mountain Time time appears instantly on the right.
- Use the ⇄ button to convert MST to GMT instead.
About Greenwich Mean Time and Mountain Time
Greenwich Mean Time (GMT) is used in the Greenwich meridian (London in winter, Iceland, and West Africa). Mountain Time (MST) is used in Denver, Salt Lake City and Calgary.
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Frequently asked questions
What is the time difference between GMT and MST?
MST is 6 hours behind GMT right now. The difference changes between 7 hours and 6 hours during the year because of daylight saving time.
How do I convert GMT to MST?
Subtract 6 hours to the GMT time. For example, 12:00 PM GMT is 6:00 AM MST.
Where is GMT used?
Greenwich Mean Time is used in the Greenwich meridian (London in winter, Iceland, and West Africa).
Where is MST used?
Mountain Time is used in Denver, Salt Lake City and Calgary.
Does this converter handle daylight saving time?
Yes. The converter uses the official time zone database, so it automatically applies daylight saving time for the date you pick.