GMT to MST

GMT (Greenwich Mean Time, UTC+0) and MST (Mountain Standard Time, UTC−7) are fixed offsets, so the gap never changes: MST is always 7 hours behind GMT. Use the table below to convert any GMT time to MST.

GMT — Greenwich Mean Time
MST — Mountain Standard Time

MST is 7 hours behind GMT.

Also searched as UTC to Mountain Time, or GMT vs MST.

MST is the standard (winter) offset for US Mountain. From mid-March to early November those clocks run on MDT (UTC−6) for daylight saving.

Common GMT to MST times

Full GMT to MST conversion table

GMT 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

FAQ

What is the GMT to MST time difference?

MST is 7 hours behind GMT. GMT is Greenwich Mean Time at a fixed UTC+0, and MST is Mountain Standard Time at UTC−7. Because both are named constant offsets rather than city clocks, the gap does not move — the 24-hour table above reads the same every day of the year. To convert by hand, subtract 7 hours from the GMT time.

What time is 9 AM GMT in MST?

9 AM GMT is 2:00 AM MST. That follows from the gap of 7 hours between UTC+0 and UTC−7, so every GMT hour moves by the same amount. The full 24-hour table above lists every hour, so you can convert any GMT time to MST at a glance. Because both are fixed offsets, that mapping is identical on any date — there is no daylight-saving exception to remember.

Is GMT ahead of or behind MST?

MST is 7 hours behind GMT, which is the same as saying GMT is 7 hours ahead of MST. That comes straight from the two offsets: UTC+0 for GMT against UTC−7 for MST. So at the same instant, 9:00 AM on GMT reads 2:00 AM on MST. Both are fixed named offsets, so the direction and the size of that gap hold all year.

Does GMT to MST change with daylight saving?

The GMT↔MST offset itself never changes: UTC+0 to UTC−7 is a constant 7 hours gap. Note: MST is the standard (winter) offset for US Mountain. From mid-March to early November those clocks run on MDT (UTC−6) for daylight saving. What can change is which abbreviation a region is using at a given date, which is why the notes above link across to the matching conversion. Converting between the named offsets themselves, as this page does, is the same arithmetic on every day of the year.

Other conversions

GMT to EST · GMT to CST · GMT to PST · GMT to IST · GMT to EDT · All zone converters →

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UTC & GMT explained · Daylight saving explained · Current local times around the world