Search TimeInOne

Global Search

Search cities, countries and time zones

Search by city, country, country code or IANA time zone.

Time Zone Converter

ET to MSTTime Converter

Convert Eastern Time to Mountain Standard Time, compare their live UTC offsets and explore a complete 24-hour conversion table.

Live clocksDST aware24-hour table

Live comparison

Current local times

From

ET

Eastern Time

To

MST

Mountain Standard Time

Enter a local date and time using ET.

ET

10:02:00 PM

Wednesday, August 12, 2026

UTC-04:00Seasonal zone
MST

7:02 PM

Wednesday, August 12, 2026

UTC-07:00Fixed offset

Time difference

MST is 3 hours behind ET

Hourly comparison

24-hour conversion table

Compare each hour in ET with MST.

24 hours
HourETMSTDifference
0

10:02:00 PM

Wednesday, August 12, 2026

7:02 PM

Wednesday, August 12, 2026

-3h
1

11:02:00 PM

Wednesday, August 12, 2026

8:02 PM

Wednesday, August 12, 2026

-3h
2

12:02:00 AM

Thursday, August 13, 2026

9:02 PM

Wednesday, August 12, 2026

-3h
3

1:02:00 AM

Thursday, August 13, 2026

10:02 PM

Wednesday, August 12, 2026

-3h
4

2:02:00 AM

Thursday, August 13, 2026

11:02 PM

Wednesday, August 12, 2026

-3h
5

3:02:00 AM

Thursday, August 13, 2026

12:02 AM

Thursday, August 13, 2026

-3h
6

4:02:00 AM

Thursday, August 13, 2026

1:02 AM

Thursday, August 13, 2026

-3h
7

5:02:00 AM

Thursday, August 13, 2026

2:02 AM

Thursday, August 13, 2026

-3h
8

6:02:00 AM

Thursday, August 13, 2026

3:02 AM

Thursday, August 13, 2026

-3h
9

7:02:00 AM

Thursday, August 13, 2026

4:02 AM

Thursday, August 13, 2026

-3h
10

8:02:00 AM

Thursday, August 13, 2026

5:02 AM

Thursday, August 13, 2026

-3h
11

9:02:00 AM

Thursday, August 13, 2026

6:02 AM

Thursday, August 13, 2026

-3h
12

10:02:00 AM

Thursday, August 13, 2026

7:02 AM

Thursday, August 13, 2026

-3h
13

11:02:00 AM

Thursday, August 13, 2026

8:02 AM

Thursday, August 13, 2026

-3h
14

12:02:00 PM

Thursday, August 13, 2026

9:02 AM

Thursday, August 13, 2026

-3h
15

1:02:00 PM

Thursday, August 13, 2026

10:02 AM

Thursday, August 13, 2026

-3h
16

2:02:00 PM

Thursday, August 13, 2026

11:02 AM

Thursday, August 13, 2026

-3h
17

3:02:00 PM

Thursday, August 13, 2026

12:02 PM

Thursday, August 13, 2026

-3h
18

4:02:00 PM

Thursday, August 13, 2026

1:02 PM

Thursday, August 13, 2026

-3h
19

5:02:00 PM

Thursday, August 13, 2026

2:02 PM

Thursday, August 13, 2026

-3h
20

6:02:00 PM

Thursday, August 13, 2026

3:02 PM

Thursday, August 13, 2026

-3h
21

7:02:00 PM

Thursday, August 13, 2026

4:02 PM

Thursday, August 13, 2026

-3h
22

8:02:00 PM

Thursday, August 13, 2026

5:02 PM

Thursday, August 13, 2026

-3h
23

9:02:00 PM

Thursday, August 13, 2026

6:02 PM

Thursday, August 13, 2026

-3h
Source time zone

About ET

A seasonal North American time zone that automatically switches between EST and EDT.

Full name
Eastern Time
Type
Seasonal IANA time zone
Regions
United States, Canada
View ET details
Target time zone

About MST

The fixed standard-time offset used in parts of North America.

Full name
Mountain Standard Time
Type
Fixed UTC offset
Regions
United States, Canada, Mexico
View MST details

Reverse this conversion

Convert MST back to ET.

MST to ET
FAQ

ET to MST time FAQ

Common questions about converting Eastern Time to Mountain Standard Time, their UTC offsets and daylight-saving behavior.

What is the time difference between ET and MST?

MST is 3 hours behind ET on this date.

What time is 9:00 AM ET in MST?

When it is 9:00 AM in ET, it is 6:00 AM in MST on Wednesday, August 12, 2026.

Is MST ahead of ET?

No. MST is currently 3 hours behind ET.

Do ET and MST use daylight saving time?

ET is represented by the IANA time zone America/New_York. Its active offset can change according to the date and daylight-saving rules. MST is defined as a fixed UTC offset. Its offset does not change automatically according to the selected date.

Where are ET and MST used?

ET is associated with United States, Canada. MST is associated with United States, Canada, Mexico. Time-zone abbreviations can be ambiguous, so TimeInOne uses the specific definitions shown on this page.