MST to EST time difference
Right now US Eastern Time is 2 hours ahead of US Mountain Time: when it is 9:00 AM in US Mountain Time (MDT), it is 11:00 AM in US Eastern Time (EDT). Both places change their clocks on the same nights, so the difference stays the same all year.
MT, MST and MDT; ET, EST and EDT
MT means Mountain Time, whatever the season. It is MST (Mountain Standard Time, UTC-7) from early November to mid-March and MDT (Mountain Daylight Time, UTC-6) the rest of the year. Today it is MDT. ET means Eastern Time, whatever the season. It is EST (Eastern Standard Time, UTC-5) from early November to mid-March and EDT (Eastern Daylight Time, UTC-4) the rest of the year. Today it is EDT. Most of Arizona stays on MST all year, so in summer Arizona has the same clock time as Pacific Time; this page follows Denver, which changes the clocks. Because all of these zones change their clocks on the same nights, the gap between MT and ET stays 2 hours all year. People often write "EST" all year when they mean Eastern Time; the times on this page are correct either way.
MST to EST conversion table
Every hour of the day in US Mountain Time and the matching time in US Eastern Time, for today, October 13, 2026.
| MST (US Mountain Time) | EST (US Eastern Time) |
|---|---|
| 12:00 AM | 2:00 AM |
| 1:00 AM | 3:00 AM |
| 2:00 AM | 4:00 AM |
| 3:00 AM | 5:00 AM |
| 4:00 AM | 6:00 AM |
| 5:00 AM | 7:00 AM |
| 6:00 AM | 8:00 AM |
| 7:00 AM | 9:00 AM |
| 8:00 AM | 10:00 AM |
| 9:00 AM | 11:00 AM |
| 10:00 AM | 12:00 PM |
| 11:00 AM | 1:00 PM |
| 12:00 PM | 2:00 PM |
| 1:00 PM | 3:00 PM |
| 2:00 PM | 4:00 PM |
| 3:00 PM | 5:00 PM |
| 4:00 PM | 6:00 PM |
| 5:00 PM | 7:00 PM |
| 6:00 PM | 8:00 PM |
| 7:00 PM | 9:00 PM |
| 8:00 PM | 10:00 PM |
| 9:00 PM | 11:00 PM |
| 10:00 PM | 12:00 AM (next day) |
| 11:00 PM | 1:00 AM (next day) |
Scheduling tips
The gap is small, so normal working hours mostly overlap. When you share a time, write the zone with it, such as "9:00 AM MST", and remember that a time near midnight can fall on a different date on the other side.
Reverse: EST to MST. Other converters: PKT to EST · PST to EST · CST to EST · GMT to EST · IST to EST · MST to CST · any time zone to your time
Frequently asked questions
What is the time difference between MST and EST?
Right now US Eastern Time is 2 hours ahead of US Mountain Time.
What time is it in US Eastern Time when it is 9 AM in US Mountain Time?
11:00 AM.
What is 8 PM MST in EST?
10:00 PM EDT.
Does the MST to EST difference change during the year?
No. Both places switch to and from daylight saving time on the same nights, so the gap stays the same all year.
How do I convert MST to EST?
Enter the MST time and date at the top. The converter applies the difference for that date, including daylight saving time.
What is 12 PM MST in EST?
2:00 PM today.
What is 6 PM MST in EST?
8:00 PM today.
What is the best time for a call between US Mountain Time and US Eastern Time?
Pick a time that is in working hours in both places; the hour-by-hour table on this page shows both clocks side by side.