EST to MST Time Converter
Convert Eastern Time to Mountain Time instantly.
Scroll the timeline to check any hour of the day.
Eastern Time
EST
4:23
Mountain Time
MST
2:23
EST and MST are on daylight savings right now, shown as EDT and MDT.
Search any city, build a custom world clock, and plan across more time zones and options in the FlutterTime app. Free.
How the EST to MST time difference works
MST is 2 hours behind EST. Eastern Time (EST) is the time zone of the US East Coast. Mountain Time (MST) is the US Mountain time zone. For example, 9:00 AM EST is 7:00 AM MST. Scroll the timeline above to convert any moment, or use the chart below for a quick reference.
Time difference
2 hours
Daylight saving
Both observe
EST offset
UTC-5
MST offset
UTC-7
EST to MST conversion chart
| Eastern Time (EST) | Mountain Time (MST) |
|---|---|
| 12:00 AM | 10:00 PM -1 day |
| 1:00 AM | 11:00 PM -1 day |
| 2:00 AM | 12:00 AM |
| 3:00 AM | 1:00 AM |
| 4:00 AM | 2:00 AM |
| 5:00 AM | 3:00 AM |
| 6:00 AM | 4:00 AM |
| 7:00 AM | 5:00 AM |
| 8:00 AM | 6:00 AM |
| 9:00 AM | 7:00 AM |
| 10:00 AM | 8:00 AM |
| 11:00 AM | 9:00 AM |
| 12:00 PM | 10:00 AM |
| 1:00 PM | 11:00 AM |
| 2:00 PM | 12:00 PM |
| 3:00 PM | 1:00 PM |
| 4:00 PM | 2:00 PM |
| 5:00 PM | 3:00 PM |
| 6:00 PM | 4:00 PM |
| 7:00 PM | 5:00 PM |
| 8:00 PM | 6:00 PM |
| 9:00 PM | 7:00 PM |
| 10:00 PM | 8:00 PM |
| 11:00 PM | 9:00 PM |
Best time to meet
A standard 9 to 5 workday overlaps from 11:00 AM to 5:00 PM EST (9:00 AM to 3:00 PM MST). Schedule inside that window to catch both coasts during business hours.
Cities in each time zone
Eastern Time (EST)
New YorkWashington D.C.AtlantaMiamiBostonPhiladelphia
Mountain Time (MST)
DenverSalt Lake CityAlbuquerqueBoiseColorado Springs
EST to MST questions
Is MST ahead of or behind EST?
MST is 2 hours behind EST. So 9:00 AM EST is 7:00 AM MST, and 5:00 PM EST is 3:00 PM MST.
What time is it in MST when it is 12:00 PM EST?
When it is 12:00 PM (noon) EST in Eastern Time, it is 10:00 AM MST in Mountain Time.
How many hours difference is there between EST and MST?
There is a 2 hours difference. Mountain Time (MST) runs 2 hours behind Eastern Time (EST).
Do EST and MST observe daylight saving time?
Both Eastern Time and Mountain Time observe daylight saving time on aligned dates, so the 2 hours difference between them holds all year.
What is the best time to schedule a meeting between EST and MST?
A standard 9-to-5 workday overlaps from 11:00 AM to 5:00 PM EST (9:00 AM to 3:00 PM MST). Scheduling inside that window keeps the call during business hours in both Eastern Time and Mountain Time.
Which cities use EST and MST?
Eastern Time (EST) covers cities such as New York, Washington D.C., Atlanta, Miami, Boston, Philadelphia. Mountain Time (MST) covers cities such as Denver, Salt Lake City, Albuquerque, Boise, Colorado Springs.