EST to MST Time Converter - Live World Clock

Convert time between Eastern Standard Time (EST) and Mountain Standard Time (MST). See current time with live clocks.

United States (EST)

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01:27:44 PM
Thursday, August 20, 2026

United States (MST)

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11:27:44 AM
Thursday, August 20, 2026

Current Time Difference

EST is 2 hours ahead of MST

(2 hours during Daylight Saving Time)

What is EST (Eastern Standard Time)?

Eastern Standard Time (EST) is used in eastern North America and the Caribbean, UTC-5:00.

Countries and Regions Using EST

Primary Country:

  • United States
  • States: New York, Florida, Pennsylvania, Georgia, Michigan

Also Used By:

  • Canada - Ontario, Quebec

Key Facts about EST:

  • ✓ Most populous US timezone
  • ✓ Wall Street financial center
  • ✓ DST observed March-November
  • ✓ Major Cities: New York City, Miami, Atlanta, Boston, Philadelphia, Washington D.C.
  • ✓ UTC Offset: -5:00 (-4:00 during EDT)

What is MST (Mountain Standard Time)?

Mountain Standard Time (MST) used in western North America, UTC-7:00.

Countries and Regions Using MST

Primary Country:

  • United States
  • States: Colorado, Arizona, Utah, New Mexico

Also Used By:

  • Canada - Alberta
  • Mexico

Key Facts about MST:

  • ✓ Arizona doesn't observe DST
  • ✓ Major mountain resort areas
  • ✓ Growing tech hub in Denver
  • ✓ Major Cities: Denver, Phoenix, Albuquerque, Salt Lake City
  • ✓ UTC Offset: -7:00 (-6:00 during MDT)

EST to MST Time Difference

Standard Time Difference:

EST is 2 hours ahead

During Daylight Saving Time:

EST is 2 hours ahead

Common Use Cases:

  • • Business meetings between United States and United States
  • • International collaboration across timezones
  • • Scheduling calls and conferences

Frequently Asked Questions

Which countries are in EST time zone?

United States is the primary country using EST (-5:00). Other countries include: Canada.

Which countries are in MST time zone?

United States is the primary country using MST (-7:00). Other countries include: Canada, Mexico.

How many hours is EST ahead of MST?

EST is 2 hours ahead of MST. During Daylight Saving Time, the difference is 2 hours.

Does United States observe Daylight Saving Time?

Yes, United States observes Daylight Saving Time. During DST, EST changes to EDT (Eastern Daylight Time) with UTC offset of -4:00.