GMT to MST Converter

Convert between any time zones worldwide. Free and accurate time zone converter with DST support.

Edit time and date on either side to see the conversion instantly.

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GMT
Greenwich Mean Time
Date changes are handled automatically when conversions cross midnight.
MST
Mountain Standard Time
Date changes are handled automatically when conversions cross midnight.

About GMT to MST Conversion

Converting time between GMT and MST requires understanding their time zone offsets and any daylight saving time adjustments. GMT (GMT) operates at UTC+0, while MST (MST) is set to UTC-7. This means MST is 7 hours behind GMT. Note that due to the time difference, the date may change. When it's 2:10 AM GMT on February 4, 2026, it's 7:10 PM MST on February 3, 2026 in MST. Europe/London observes daylight saving time, switching between GMT (UTC+0) and BST (UTC+1), while America/Phoenix does not observe daylight saving time. Use this converter to quickly find the equivalent time in MST for any time in GMT, whether you're scheduling meetings, planning travel, or coordinating with teams across different time zones.

How to Use the Time Zone Converter

  1. Select your source timezone from the "From timezone" dropdown (use search to find quickly)
  2. Enter the date and time you want to convert (or click "Today" and "Now" for current time)
  3. Select your target timezone from the "To timezone" dropdown
  4. The conversion updates automatically as you change inputs - no button needed!
  5. Use "Copy" button to copy the converted time, or use presets for quick conversions

Frequently Asked Questions

What is the time difference between GMT and MST?

The time difference between GMT and MST is 7 hours. MST is 7 hours behind GMT.

Is MST ahead of or behind GMT?

MST is behind GMT by 7 hours. When it's 12 PM in GMT, it's 5:00 AM in MST.

How many hours do you add to GMT to get MST?

You subtract 7 hours from GMT to get MST. For example, 12 PM GMT - 7 hours = 5:00 AM MST.

Does the GMT to MST time difference change during Daylight Saving Time?

Yes, the time difference can change during Daylight Saving Time (DST). GMT observes DST, which can affect the time difference during the transition periods in spring and fall.

What is 12 PM GMT in MST?

12 PM GMT is 5:00 AM MST. This conversion accounts for the 7-hour time difference between the two timezones.

Is GMT the same throughout the year when converting to MST?

No, the conversion between GMT and MST can vary during the year due to Daylight Saving Time. The time difference may change by 1 hour during DST transition periods (typically March and November), so always use a current timezone converter for accurate conversions.

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