EST to MST Converter
Convert Eastern Standard Time (EST/EDT) to Mountain Standard Time (MST/MDT) instantly. See live clocks, convert any time, and view a full hour-by-hour comparison chart — free, no signup required.
Convert a Specific Time
EST to MST — Hour-by-Hour Comparison
| EST (Eastern) | MST (Mountain) |
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Frequently Asked Questions
EST (Eastern Standard Time) is 2 hours ahead of MST (Mountain Standard Time). This means when it is noon in New York (EST), it is 10:00 AM in Denver (MST). This 2-hour difference generally stays the same year-round when both zones observe daylight saving time.
To convert EST to MST, simply subtract 2 hours. For example: 3:00 PM EST = 1:00 PM MST. To convert MST to EST, add 2 hours. For example: 10:00 AM MST = 12:00 PM EST.
It depends. Both Eastern and Mountain time zones observe daylight saving time, so the difference normally stays at 2 hours. However, Arizona (in the Mountain zone) does not observe DST. During summer (EDT), the difference between Eastern and Arizona time becomes 3 hours instead of 2.
EST cities: New York, Washington D.C., Miami, Atlanta, Boston.
MST cities: Denver, Phoenix, Salt Lake City, Albuquerque, El Paso.