MST to EST Time Converter

Convert Mountain Standard Time to Eastern Standard Time - Quick & Accurate

Denver (MST)
New York (EST)
EST is 2 hours ahead of MST

Quick Time Conversion

Denver
Mountain Standard Time
UTC-7 (MST) / UTC-6 (MDT)
New York
Eastern Standard Time
UTC-5 (EST) / UTC-4 (EDT)

Current Time Right Now

Mountain (MST/MDT)
Eastern (EST/EDT)

Updates live every second

24-Hour Visual Comparison

MST (Denver)
12am MST
1am MST
2am MST
3am MST
4am MST
5am MST
6am MST
7am MST
8am MST
9am MST
10am MST
11am MST
12pm MST
1pm MST
2pm MST
3pm MST
4pm MST
5pm MST
6pm MST
7pm MST
8pm MST
9pm MST
10pm MST
11pm MST
12a6a12p6p12a
EST (NY)
2am EST
3am EST
4am EST
5am EST
6am EST
7am EST
8am EST
9am EST
10am EST
11am EST
12pm EST
1pm EST
2pm EST
3pm EST
4pm EST
5pm EST
6pm EST
7pm EST
8pm EST
9pm EST
10pm EST
11pm EST
12am EST
1am EST
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Business Hours (9AM-5PM)
Evening (5PM-9PM)
Night (9PM-6AM)

Hover over any hour to see corresponding time in both zones

Best Time for Meeting/Call

To schedule a meeting between MST and EST:

Best Window (MST)
8:00 AM - 3:00 PM
Which is (EST)
10:00 AM - 5:00 PM
Both parties in business hours
7-hour overlap window
Ideal for teams across US

Pro Tip: Schedule calls between 10:00 AM - 3:00 PM MST for maximum overlap with EST business hours

Complete MST to EST Conversion Table

MST TimeEST TimeContext
12:00 AM02:00 AM
Midnight Mountain Time
01:00 AM03:00 AM
Late Night
02:00 AM04:00 AM
Late Night
03:00 AM05:00 AM
Late Night
04:00 AM06:00 AM
Late Night
05:00 AM07:00 AM
Late Night
06:00 AM08:00 AM
Early Morning MST
07:00 AM09:00 AM
Night Time
08:00 AM10:00 AM
Work Starts MST
09:00 AM11:00 AM
Meeting Window
10:00 AM12:00 PM
Meeting Window
11:00 AM01:00 PM
Meeting Window

Mountain Standard Time (MST)

UTC-7
UTC-6 during MDT
Major Cities:
  • • Denver
  • • Phoenix
  • • Salt Lake City
  • • Albuquerque
  • • Boise
Daylight Saving:

MDT (UTC-6) from March to November

Note: Arizona stays on MST year-round

IANA Identifier:

America/Denver

Eastern Standard Time (EST)

UTC-5
UTC-4 during EDT
Major Cities:
  • • New York
  • • Miami
  • • Atlanta
  • • Boston
  • • Philadelphia
Daylight Saving:

EDT (UTC-4) from March to November

IANA Identifier:

America/New_York

Mountain Standard Time (MST) vs Eastern Standard Time (EST)

Mountain Standard Time (MST)Eastern Standard Time (EST)

Mountain Standard Time (MST) is 7 hours behind Coordinated Universal Time (UTC-7). During daylight saving time, the region observes Mountain Daylight Time (MDT), which is UTC-6. Note that Arizona does not observe DST and remains on MST year-round.

Eastern Standard Time (EST) is 5 hours behind Coordinated Universal Time (UTC-5). During daylight saving time, the region observes Eastern Daylight Time (EDT), which is UTC-4.

Where Is It Used In The United States?

  • Colorado: Denver, Colorado Springs, Aurora, Boulder
  • Arizona: Phoenix, Tucson (no DST - stays MST year-round)
  • Utah: Salt Lake City, Provo, West Valley City
  • New Mexico: Albuquerque, Santa Fe, Las Cruces
  • Wyoming: Cheyenne, Casper, Laramie
  • Montana: Billings, Missoula, Great Falls
  • Idaho: Boise, Meridian, Nampa (southern portion)
  • New York: New York City, Buffalo, Rochester, Albany
  • Florida: Miami, Tampa, Orlando, Jacksonville
  • Pennsylvania: Philadelphia, Pittsburgh
  • Ohio: Columbus, Cleveland, Cincinnati
  • Georgia: Atlanta, Augusta, Savannah
  • North Carolina: Charlotte, Raleigh, Greensboro
  • Michigan: Detroit, Grand Rapids (most of state)
  • Massachusetts: Boston, Worcester, Cambridge
  • Virginia: Virginia Beach, Norfolk, Richmond
  • Plus: New Jersey, Connecticut, Maryland, South Carolina, Tennessee (eastern portions)

Where Is It Used In Canada?

  • Alberta: Calgary, Edmonton, Red Deer
  • Northwest Territories: Yellowknife, Inuvik
  • Parts of: British Columbia (eastern regions), Saskatchewan, Nunavut
  • Ontario: Toronto, Ottawa, Mississauga, Hamilton
  • Quebec: Montreal, Quebec City, Laval (most of province)
  • Nunavut: Iqaluit and eastern portions

Other Countries And Regions

Mexico

  • Chihuahua: Ciudad Juárez, Chihuahua City
  • Sonora: Hermosillo (no DST)

Caribbean

  • Bahamas: Nassau
  • Jamaica: Kingston, Montego Bay
  • Haiti: Port-au-Prince
  • Others: Cayman Islands, Turks and Caicos

Central & South America

  • Panama: Panama City
  • Colombia: Bogotá, Medellín, Cali
  • Peru: Lima, Arequipa, Cusco
  • Ecuador: Quito, Guayaquil

Key Facts

  • UTC Offset: UTC-7 (MST) / UTC-6 (MDT)
  • Region: Rocky Mountain region of North America
  • Known For: Mountain resorts, national parks, outdoor recreation
  • Largest Cities: Phoenix (1.7M), Denver (715K), Calgary (1.3M)
  • Special Note: Arizona does not observe DST (except Navajo Nation)
  • Daylight Saving: Begins 2nd Sunday in March, ends 1st Sunday in November
  • UTC Offset: UTC-5 (EST) / UTC-4 (EDT)
  • Region: Most populous time zone in North America
  • Known For: Major financial and cultural centers
  • Largest Cities: New York City (8.3M), Toronto (2.9M), Philadelphia (1.6M)
  • Coverage: Approximately 45% of US population
  • Daylight Saving: Begins 2nd Sunday in March, ends 1st Sunday in November

Quick Reference

Time Difference: EST is 2 hours ahead of MST year-round
Consistency: This difference remains constant because both observe DST at the same dates (except Arizona)
Distance: Covers approximately 1,500 miles across the United States
UTC Offsets: MST = UTC-7, EST = UTC-5 | MDT = UTC-6, EDT = UTC-4 (during DST)
2025 DST: Starts March 9 at 2:00 AM, Ends November 2 at 2:00 AM

Frequently Asked Questions

MST (Mountain Standard Time) is 2 hours behind EST (Eastern Standard Time). This means when it's 12:00 PM in Denver (MST), it's 2:00 PM in New York (EST).

The best time to call from MST to EST is between 8:00 AM and 3:00 PM MST, which corresponds to 10:00 AM to 5:00 PM EST. This ensures both parties are within standard business hours.

No, the time difference remains constant at 2 hours because both MST and EST observe Daylight Saving Time at the same dates. MST becomes MDT (UTC-6) and EST becomes EDT (UTC-4).

MST cities include Denver, Phoenix, Salt Lake City, Albuquerque, and Boise. EST cities include New York, Miami, Atlanta, Boston, and Philadelphia.

In 2025, DST starts on March 9 at 2:00 AM and ends on November 2 at 2:00 AM. During DST, MST becomes MDT and EST becomes EDT. Note: Arizona does not observe DST and stays on MST year-round.

Related Time Converters

EST → MSTMST → PSTMST → CSTMST → UTCEST → PSTMST → GMTEST → UTCView All