MST to EST Converter
EST is 2 hours ahead of MST. 9:00 AM MST = 11:00 AM EST.
EST is 2 hours ahead of MST. To convert MST to EST, add 2 hours to the MST time: 9:00 AM MST = 11:00 AM EST.
MST (Mountain Time) is used in Denver, Salt Lake City, Albuquerque, Calgary, Edmonton; Phoenix (Arizona) all year. EST (Eastern Time) is used in New York, Washington DC, Florida, Georgia, Ohio, Michigan, Ontario, Quebec, Panama and Jamaica (all year).
Most of Arizona uses MST all year and does not switch to MDT.
MST to EST time conversion table
MST to EST on 6 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| MST | EST | Day |
|---|---|---|
| 12:00 AM MST | 2:00 AM EST | night |
| 1:00 AM MST | 3:00 AM EST | night |
| 2:00 AM MST | 4:00 AM EST | night |
| 3:00 AM MST | 5:00 AM EST | night |
| 4:00 AM MST | 6:00 AM EST | — |
| 5:00 AM MST | 7:00 AM EST | — |
| 6:00 AM MST | 8:00 AM EST | — |
| 7:00 AM MST | 9:00 AM EST | — |
| 8:00 AM MST | 10:00 AM EST | — |
| 9:00 AM MST | 11:00 AM EST | work hours |
| 10:00 AM MST | 12:00 PM EST | work hours |
| 11:00 AM MST | 1:00 PM EST | work hours |
| 12:00 PM MST | 2:00 PM EST | work hours |
| 1:00 PM MST | 3:00 PM EST | work hours |
| 2:00 PM MST | 4:00 PM EST | work hours |
| 3:00 PM MST | 5:00 PM EST | — |
| 4:00 PM MST | 6:00 PM EST | — |
| 5:00 PM MST | 7:00 PM EST | — |
| 6:00 PM MST | 8:00 PM EST | — |
| 7:00 PM MST | 9:00 PM EST | — |
| 8:00 PM MST | 10:00 PM EST | night |
| 9:00 PM MST | 11:00 PM EST | night |
| 10:00 PM MST | 12:00 AM EST | next day |
| 11:00 PM MST | 1:00 AM EST | next day |
- Work rows — 9 AM–5 PM in both places
- Night in the destination (10 PM–6 AM)
How to convert MST to EST
Add 2 hours to the MST time to get EST.
Example: 9:00 AM MST = 11:00 AM EST.
Across midnight: 10:00 PM MST = 12:00 AM EST (next day). The date changes, so always check the day as well as the hour.
Time difference between MST and EST
The time difference between MST and EST is 2 hours all year – EST is ahead of MST.
MST and EST during daylight saving time
- 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).
- 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).
Best time for a meeting between MST and EST
MST and EST share 6 hours of the 9 AM–5 PM working day. Any time between 9:00 AM and 3:00 PM MST lands between 11:00 AM and 5:00 PM EST, inside working hours for both.
MST to EST FAQ
What is the time difference between MST and EST?
EST is 2 hours ahead of MST all year. 9:00 AM MST = 11:00 AM EST.
What is 9 AM MST in EST?
9:00 AM MST is 11:00 AM EST.
What is 12 PM (noon) MST in EST?
12:00 PM MST is 2:00 PM EST.
Is EST ahead of or behind MST?
EST is 2 hours ahead of MST, so it is later in EST than in MST.
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.
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.
What is the best time for a meeting between MST and EST?
MST and EST share 6 hours of the 9 AM–5 PM working day. Any time between 9:00 AM and 3:00 PM MST lands between 11:00 AM and 5:00 PM EST, inside working hours for both.
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.
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.
Related conversions
Convert EST to MST
Convert MST to other time zones
Convert other time zones to EST
MST to EST by hour
Learn more
Updated 6 November 2026. Time zone data: IANA tz database.