EDT to MST Time Converter
Use this EDT to MST time converter to compare US East Coast and US Mountain time instantly. MST is 3 hours behind EDT, so 9:00 AM EDT becomes 6:00 AM MST and 5:00 PM EDT becomes 2:00 PM MST. The page is useful for business-hours overlap, international calls, remote-team handoffs, webinars, and travel planning, with daylight saving adjustments handled automatically.
EDT to MST Quick Facts
Use this EDT to MST converter to compare US East Coast and US Mountain time, check the 3 hours gap, and confirm the right slot for calls, handoffs, and deadlines. Good overlap starts around 12:00 PM EDT / 9:00 AM MST.
How to Convert EDT to MST
Converting between Eastern Daylight Time and Mountain Standard Time means accounting for a 3 hours gap — here's how to do it in under 10 seconds with no sign-up.
Pick the date and time in Eastern Daylight Time (UTC -4) that you want to convert. Hit "Now" to load the current EDT time instantly, or use "+1h" to step forward and compare.
The equivalent Mountain Standard Time (UTC -7) time appears immediately. Since MST is 3 hours behind of EDT, most daytime conversions stay on the same calendar day.
Click "Copy Time" to grab the MST result for your calendar or message. Use "+1d" to check how the conversion shifts across dates — useful when Daylight Saving Time changes the gap.
Why Choose Our EDT to MST Converter
When someone in United States suggests 12:00 PM EDT, that's 9:00 AM MST. This converter shows the overlap so both sides agree on one slot — no back-and-forth.
Late-night EDT times can land on a different date in MST because of the 3 hours offset. The converter labels "next day" or "previous day" next to the result so you never send a message a day early or miss a deadline.
Daylight Saving adjustments can widen or narrow the EDT–MST gap by an hour. During transition weeks many people get it wrong. This converter pulls the current UTC offsets automatically, so the result is right even on the changeover day.
Product launches, sports matches, and webinars are often announced in EDT. Convert the event time to MST so you know exactly when to tune in — with a 3 hours difference, a morning event in United States falls during work hours in United States.
EDT to MST Time Conversion Chart
Quick-reference conversion table covering every hour of the day at a glance.
Eastern Daylight Time to Mountain Standard Time full day schedule
| Eastern Daylight Time | Mountain Standard Time |
|---|---|
| 12:00 AM |
9:00 PM
(previous day)
|
| 1:00 AM |
10:00 PM
(previous day)
|
| 2:00 AM |
11:00 PM
(previous day)
|
| 3:00 AM |
12:00 AM
|
| 4:00 AM |
1:00 AM
|
| 5:00 AM |
2:00 AM
|
| 6:00 AM |
3:00 AM
|
| 7:00 AM |
4:00 AM
|
| 8:00 AM |
5:00 AM
|
| 9:00 AM |
6:00 AM
|
| 10:00 AM |
7:00 AM
|
| 11:00 AM |
8:00 AM
|
| 12:00 PM |
9:00 AM
|
| 1:00 PM |
10:00 AM
|
| 2:00 PM |
11:00 AM
|
| 3:00 PM |
12:00 PM
|
| 4:00 PM |
1:00 PM
|
| 5:00 PM |
2:00 PM
|
| 6:00 PM |
3:00 PM
|
| 7:00 PM |
4:00 PM
|
| 8:00 PM |
5:00 PM
|
| 9:00 PM |
6:00 PM
|
| 10:00 PM |
7:00 PM
|
| 11:00 PM |
8:00 PM
|
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Convert Other Time Zones to MST
Find the time difference from any major zone into Mountain Standard Time. Use these pages when scheduling with United States from a different region.