EST to MT Time Converter
MT is 2 hours behind EST. The US East Coast is currently on EDT (UTC-4:00), and The US Mountain states are currently on MDT (UTC-6:00).
Best Time to Call Between EST and MT
Both zones are inside normal business hours between 11:00 AM and 5:00 PM EST — that's 9:00 AM to 3:00 PM MT. That's a 6-hour window.
both at work EST only MT only neither — hours along the strip are EST.
Common Times Converted
EST on the left, MT on the right.
EST to MT: Full 24-Hour Conversion Table
Shaded rows are working hours; the darker shade marks the hours when both zones are at work.
| EST | MT | Working hours |
|---|---|---|
| 12:00 AM | 10:00 PM prev day | — |
| 1:00 AM | 11:00 PM prev 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 | EST only |
| 10:00 AM | 8:00 AM | EST only |
| 11:00 AM | 9:00 AM | Both zones |
| 12:00 PM | 10:00 AM | Both zones |
| 1:00 PM | 11:00 AM | Both zones |
| 2:00 PM | 12:00 PM | Both zones |
| 3:00 PM | 1:00 PM | Both zones |
| 4:00 PM | 2:00 PM | Both zones |
| 5:00 PM | 3:00 PM | MT only |
| 6:00 PM | 4:00 PM | MT only |
| 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 | — |
What EST and MT Actually Are
EST — Eastern Standard Time
New York, Toronto, Washington DC, Atlanta, Miami, Boston. Standing at UTC-5:00 as written, and the region does change its clocks, so its live offset moves by an hour twice a year. The next change is on Sunday, November 1, 2026, to EST. Australia also uses EST for its own Eastern Standard Time (UTC+10), now more often written AEST.
Eastern Standard Time is only actually in force from early November to mid-March. For the other eight months the same region is on EDT, which is why so many EST conversions are quietly wrong.
MT — Mountain Time
Denver, Salt Lake City, Calgary, Edmonton — and Phoenix, which does not change its clocks. Standing at UTC-7:00 as written, and the region does change its clocks, so its live offset moves by an hour twice a year. The next change is on Sunday, November 1, 2026, to MST.
Mountain Time contains the most conspicuous daylight saving exception in North America: Arizona, which has opted out since 1968.
What This Means in Practice
Both sides change clocks, on different dates
Both regions observe daylight saving but do not switch on the same day, so for a week or two each spring and fall the gap between them is an hour different from the rest of the year. Those short windows are where recurring invitations quietly break.
Close enough to share a working day
At only 2 hours apart, the two working days overlap almost completely. Scheduling is barely constrained by the difference.
Major Cities in Each Zone
Cities on EST
Cities on MT
Frequently Asked Questions
What is the time difference between EST and MT?
MT is 2 hours behind EST.
What is 9:00 AM EST in MT?
9:00 AM EST is 7:00 AM MT.
What are the best hours to schedule a call between EST and MT?
Between 11:00 AM and 5:00 PM EST, which is 9:00 AM to 3:00 PM MT. Both sides are inside normal business hours through that window.
Does the difference between EST and MT change during the year?
Yes. Both regions observe daylight saving, and they do not switch on the same dates, so the gap shifts by an hour at least twice a year. The next clock change is on Sunday, November 1, 2026.
Does EST always mean Eastern Standard Time?
Australia also uses EST for its own Eastern Standard Time (UTC+10), now more often written AEST.