EST to MST Converter
MST is 2 hours behind EST. 9:00 AM EST = 7:00 AM MST.
MST is 2 hours behind EST. To convert EST to MST, subtract 2 hours from the EST time: 9:00 AM EST = 7:00 AM MST.
EST (Eastern Time) is used in New York, Washington DC, Florida, Georgia, Ohio, Michigan, Ontario, Quebec, Panama and Jamaica (all year). MST (Mountain Time) is used in Denver, Salt Lake City, Albuquerque, Calgary, Edmonton; Phoenix (Arizona) all year.
Most of Arizona uses MST all year and does not switch to MDT.
EST to MST time conversion table
EST to MST on 6 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| EST | MST | Day |
|---|---|---|
| 12:00 AM EST | 10:00 PM MST | previous day |
| 1:00 AM EST | 11:00 PM MST | previous day |
| 2:00 AM EST | 12:00 AM MST | night |
| 3:00 AM EST | 1:00 AM MST | night |
| 4:00 AM EST | 2:00 AM MST | night |
| 5:00 AM EST | 3:00 AM MST | night |
| 6:00 AM EST | 4:00 AM MST | night |
| 7:00 AM EST | 5:00 AM MST | night |
| 8:00 AM EST | 6:00 AM MST | — |
| 9:00 AM EST | 7:00 AM MST | — |
| 10:00 AM EST | 8:00 AM MST | — |
| 11:00 AM EST | 9:00 AM MST | work hours |
| 12:00 PM EST | 10:00 AM MST | work hours |
| 1:00 PM EST | 11:00 AM MST | work hours |
| 2:00 PM EST | 12:00 PM MST | work hours |
| 3:00 PM EST | 1:00 PM MST | work hours |
| 4:00 PM EST | 2:00 PM MST | work hours |
| 5:00 PM EST | 3:00 PM MST | — |
| 6:00 PM EST | 4:00 PM MST | — |
| 7:00 PM EST | 5:00 PM MST | — |
| 8:00 PM EST | 6:00 PM MST | — |
| 9:00 PM EST | 7:00 PM MST | — |
| 10:00 PM EST | 8:00 PM MST | — |
| 11:00 PM EST | 9:00 PM MST | — |
- Work rows — 9 AM–5 PM in both places
- Night in the destination (10 PM–6 AM)
How to convert EST to MST
Subtract 2 hours from the EST time to get MST.
Example: 9:00 AM EST = 7:00 AM MST.
Across midnight: 1:00 AM EST = 11:00 PM MST (previous day). The date changes, so always check the day as well as the hour.
Time difference between EST and MST
The time difference between EST and MST is 2 hours all year – MST is behind EST.
EST and MST during daylight saving time
- EST next changes on 14 Mar 2027: clocks go forward one hour at 01:59 local time, from EST (UTC−5) to EDT (UTC−4).
- MST next changes on 14 Mar 2027: clocks go forward one hour at 01:59 local time, from MST (UTC−7) to MDT (UTC−6).
Best time for a meeting between EST and MST
EST and MST share 6 hours of the 9 AM–5 PM working day. Any time between 11:00 AM and 5:00 PM EST lands between 9:00 AM and 3:00 PM MST, inside working hours for both.
EST to MST FAQ
What is the time difference between EST and MST?
MST is 2 hours behind EST all year. 9:00 AM EST = 7:00 AM MST.
What is 9 AM EST in MST?
9:00 AM EST is 7:00 AM MST.
What is 12 PM (noon) EST in MST?
12:00 PM EST is 10:00 AM MST.
Is MST ahead of or behind EST?
MST is 2 hours behind EST, so it is earlier in MST than in EST.
Does EST change for daylight saving time?
Yes. EST next changes on 14 Mar 2027, when clocks go forward one hour from EST to EDT.
Does MST change for daylight saving time?
Yes. MST next changes on 14 Mar 2027, when clocks go forward one hour from MST to MDT.
What is the best time for a meeting between EST and MST?
EST and MST share 6 hours of the 9 AM–5 PM working day. Any time between 11:00 AM and 5:00 PM EST lands between 9:00 AM and 3:00 PM MST, inside working hours for both.
Is ET the same as EST?
EST is the winter (standard) name of Eastern Time (ET). From March to November the same clocks are called EDT. This converter always uses the one in force on the date you choose.
Is MT the same as MST?
MST is the winter (standard) name of Mountain Time (MT). From March to November the same clocks are called MDT. This converter always uses the one in force on the date you choose.
Related conversions
Convert MST to EST
Convert EST to other time zones
Convert other time zones to MST
EST to MST by hour
Learn more
Updated 6 November 2026. Time zone data: IANA tz database.