EST to MST Converter
Convert Eastern Time (EST/EDT) to Mountain Time (MST/MDT). This page uses New York time and Denver time, so it follows daylight saving automatically: pick any date below and the conversion uses the offsets in force on that day.
EST to MST time difference
The converter above shows the difference for the date and time you choose. Over 2026, the gap works out like this:
- MST is 2 hours behind ESTAll year.
EST to MST for a working day
New York time from 6 AM to 10 PM, converted. Bold times fall between 9 AM and 5 PM in MST.
| EST (New York) | MST (Denver) |
|---|---|
| 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 |
Calculated for January 15, 2026.
About these time zones
EST. Eastern Time is EST (UTC-5) in winter and EDT (UTC-4) from the second Sunday in March to the first Sunday in November. It covers New York, Toronto, Miami and most of the US East Coast.
MST. This page uses Denver, which is MST (UTC-7) in winter and MDT (UTC-6) in summer. Most of Arizona stays on MST all year, so in summer Phoenix matches Pacific Time rather than Denver.
Overlap. Meetings starting between 11:00 AM and 4:00 PM EST land inside a 9 to 5 working day in both zones.