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Reverse Time Zone Converter

EST to MST Converter: Eastern Time to Mountain Time

Need to convert from Eastern Time (EST/EDT) back to Mountain Time (MST/MDT), or convert Mountain Time to Eastern Time? Eastern Time is 2 hours ahead of Mountain Time—simply subtract 2 hours.

Formula: EST − 2 Hours = MST
Mountain Time is 2 hours behind Eastern Time.
Example: 2:00 PM EST = 12:00 PM (Noon) MST • 9:00 AM EST = 7:00 AM MST.
Switch to MST → EST
Live Atomic Clock Sync
Updates every second
Eastern Time (EST/EDT)EST/EDT
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Mountain Time (MST/MDT)MST/MDT
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Direct Quick Answer
Eastern Standard Time is 2 hours ahead of Mountain Standard Time (add 2 hours).
Example: 9:00 AM MST = 11:00 AM EST (or 2:00 PM EST = 12:00 PM MST).

Active offset abbreviation: EST/EDT

10:00 AM
November 4, 2026
-2 hours behind

Observing MST/MDT

Popular EST to MST Conversions

Common times converted from Eastern to Mountain for office meetings and business syncs, such as New York to Denver time.

Early Morning Call
9:00 AM EST = 7:00 AM MST
Mountain Day Starts
11:00 AM EST = 9:00 AM MST
Mid-Morning Sync
12:00 PM EST = 10:00 AM MST
Lunchtime Overlap
2:00 PM EST = 12:00 PM MST
Prime Collaboration
3:00 PM EST = 1:00 PM MST
Eastern Wrap-Up
5:00 PM EST = 3:00 PM MST

24-Hour Conversion Table

Complete hourly mapping between Eastern Time (EST/EDT) and Mountain Time (MST/MDT).

View:
Eastern Time (EST/EDT)DifferenceMountain Time (MST/MDT)StatusCopy
12:00 AMEST/EDT
-2 Hours →
10:00 PMMST/MDTPrevious day
Night
1:00 AMEST/EDT
-2 Hours →
11:00 PMMST/MDTPrevious day
Night
2:00 AMEST/EDT
-2 Hours →
12:00 AMMST/MDT
Night
3:00 AMEST/EDT
-2 Hours →
1:00 AMMST/MDT
Night
4:00 AMEST/EDT
-2 Hours →
2:00 AMMST/MDT
Night
5:00 AMEST/EDT
-2 Hours →
3:00 AMMST/MDT
Morning
6:00 AMEST/EDT
-2 Hours →
4:00 AMMST/MDT
Morning
7:00 AMEST/EDT
-2 Hours →
5:00 AMMST/MDT
Morning
8:00 AMEST/EDT
-2 Hours →
6:00 AMMST/MDT
Morning
9:00 AMEST/EDT
-2 Hours →
7:00 AMMST/MDT
Partial Working
10:00 AMEST/EDT
-2 Hours →
8:00 AMMST/MDT
Partial Working
11:00 AMEST/EDT
-2 Hours →
9:00 AMMST/MDT
Business Overlap
12:00 PMEST/EDT
-2 Hours →
10:00 AMMST/MDT
Business Overlap
1:00 PMEST/EDT
-2 Hours →
11:00 AMMST/MDT
Business Overlap
2:00 PMEST/EDT
-2 Hours →
12:00 PMMST/MDT
Business Overlap
3:00 PMEST/EDT
-2 Hours →
1:00 PMMST/MDT
Business Overlap
4:00 PMEST/EDT
-2 Hours →
2:00 PMMST/MDT
Business Overlap
5:00 PMEST/EDT
-2 Hours →
3:00 PMMST/MDT
Partial Working
6:00 PMEST/EDT
-2 Hours →
4:00 PMMST/MDT
Partial Working
7:00 PMEST/EDT
-2 Hours →
5:00 PMMST/MDT
Evening
8:00 PMEST/EDT
-2 Hours →
6:00 PMMST/MDT
Evening
9:00 PMEST/EDT
-2 Hours →
7:00 PMMST/MDT
Night
10:00 PMEST/EDT
-2 Hours →
8:00 PMMST/MDT
Night
11:00 PMEST/EDT
-2 Hours →
9:00 PMMST/MDT
Night

Looking for the forward direction? Check the hour-by-hour MST to EST chart.

Frequently Asked Questions (EST to MST)

How do EDT and MDT affect converting from Eastern to Mountain Time?

During daylight saving time, Eastern observes EDT (UTC-4) and Mountain observes MDT (UTC-6). Because both regions shift together on the official daylight saving dates, the 2-hour offset remains unchanged.

What is the time difference between EST and MST?

Eastern Time is always 2 hours ahead of Mountain Time. You can easily determine the time difference between EST and MST by subtracting 2 hours from Eastern Time.

What about Arizona when converting from Eastern?

In the winter, Arizona is 2 hours behind Eastern (same as Denver). During summer Daylight Saving Time, Eastern is on EDT while Arizona remains on standard time, making Arizona 3 hours behind Eastern (subtract 3 hours). See our guide on Eastern to Arizona time.

What is 2 pm EST to MST?

2:00 PM Eastern Standard Time equals 12:00 PM (Noon) Mountain Standard Time.

Planning a Meeting Between Eastern and Mountain Time?

Coordinate schedules across office locations and schedule a call with a Mountain Time team during mutual working hours.

Related Tools & Time Zone Guides

Explore specialized converters and scheduling calculators for Mountain and Eastern Time.

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