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Timezone Prime

MST to UTC converter

Convert Mountain Time (MST/MDT) to Coordinated Universal Time (UTC), with daylight saving applied for the exact date you pick.

From

Tue, Oct 27

To

Tue, Oct 27 Same day

MDT 9 to 5 UTC 9 to 5

From zone
Mountain Daylight Time
Offset and clock
UTC−6 Daylight saving time
IANA name
America/Denver
To zone
Coordinated Universal Time
Offset and clock
UTC+0 No daylight saving time
IANA name
Etc/UTC

UTC is 6 hours ahead of MDT.

Time difference
UTC is 6 hours ahead of MDT for most of the year (238 days in 2026). The gap is 7 hours for about 18 weeks in 2026.
Meeting window
Working days of 9 AM to 5 PM overlap from 9:00 AM to 11:00 AM MDT, which is 3:00 PM to 5:00 PM UTC while MDT and UTC apply.
Daylight saving
Mountain Time changes its clocks twice a year; Coordinated Universal Time does not.

Where MST and UTC apply

Shaded areas follow the official zone boundaries, so a country split across zones is split here too. Hover or tap a region for its local time.

  • Mountain Time
  • Coordinated Universal Time
  • Same UTC offset right now, different zone rules

Drag to pan. Ctrl and scroll, or pinch, to zoom. Boundaries: timezone-boundary-builder, © OpenStreetMap contributors

Hour by hour

Every hour of Tuesday, October 27, 2026, side by side. Days with a clock change show 23 or 25 rows.

Shaded rows fall inside working hours in both places.

Hourly comparison of the two time zones. Choose a time to load it in the converter.
Denver (MDT) Greenwich meridian (UTC) Working hours
12:00 AM 6:00 AM
1:00 AM 7:00 AM
2:00 AM 8:00 AM
3:00 AM 9:00 AM
4:00 AM 10:00 AM
5:00 AM 11:00 AM
6:00 AM 12:00 PM
7:00 AM 1:00 PM
8:00 AM 2:00 PM
9:00 AM 3:00 PM Both working
10:00 AM 4:00 PM Both working
11:00 AM 5:00 PM
12:00 PM 6:00 PM
1:00 PM 7:00 PM
2:00 PM 8:00 PM
3:00 PM 9:00 PM
4:00 PM 10:00 PM
5:00 PM 11:00 PM
6:00 PM 12:00 AM next day
7:00 PM 1:00 AM next day
8:00 PM 2:00 AM next day
9:00 PM 3:00 AM next day
10:00 PM 4:00 AM next day
11:00 PM 5:00 AM next day

MST to UTC conversion table

Every hour of the Mountain Time day, plus the common half hours, and their UTC equivalents. The second column covers the part of the year when the clocks are on a different gap.

MST to UTC conversion table
Mountain Time UTC 6 h ahead, most of the year (238 days in 2026) UTC 7 h ahead, about 18 weeks in 2026
12:00 AM 6:00 AM7:00 AM
1:00 AM 7:00 AM8:00 AM
2:00 AM 8:00 AM9:00 AM
3:00 AM 9:00 AM10:00 AM
4:00 AM 10:00 AM11:00 AM
5:00 AM 11:00 AM12:00 PM
6:00 AM 12:00 PM1:00 PM
7:00 AM 1:00 PM2:00 PM
8:00 AM 2:00 PM3:00 PM
9:00 AM 3:00 PM4:00 PM
9:30 AM 3:30 PM4:30 PM
10:00 AM 4:00 PM5:00 PM
10:30 AM 4:30 PM5:30 PM
11:00 AM 5:00 PM6:00 PM
11:30 AM 5:30 PM6:30 PM
12:00 PM 6:00 PM7:00 PM
12:30 PM 6:30 PM7:30 PM
1:00 PM 7:00 PM8:00 PM
1:30 PM 7:30 PM8:30 PM
2:00 PM 8:00 PM9:00 PM
2:30 PM 8:30 PM9:30 PM
3:00 PM 9:00 PM10:00 PM
3:30 PM 9:30 PM10:30 PM
4:00 PM 10:00 PM11:00 PM
4:30 PM 10:30 PM11:30 PM
5:00 PM 11:00 PM12:00 AM (next day)
5:30 PM 11:30 PM12:30 AM (next day)
6:00 PM 12:00 AM (next day)1:00 AM (next day)
7:00 PM 1:00 AM (next day)2:00 AM (next day)
8:00 PM 2:00 AM (next day)3:00 AM (next day)
9:00 PM 3:00 AM (next day)4:00 AM (next day)
10:00 PM 4:00 AM (next day)5:00 AM (next day)
11:00 PM 5:00 AM (next day)6:00 AM (next day)

How the gap changes in 2026 and 2027

Each row is a stretch of days with one constant difference, split at every clock change.

Time difference periods between MST and UTC
Dates MST UTC Difference
Thu, Jan 1, 2026 until Sun, Mar 8, 2026 MST UTC UTC 7 h ahead
Sun, Mar 8, 2026 until Sun, Nov 1, 2026 MDT UTC UTC 6 h ahead
Sun, Nov 1, 2026 until Sun, Mar 14, 2027 MST UTC UTC 7 h ahead
Sun, Mar 14, 2027 until Sun, Nov 7, 2027 MDT UTC UTC 6 h ahead
Sun, Nov 7, 2027 until Sat, Jan 1, 2028 MST UTC UTC 7 h ahead

Upcoming clock changes

  1. Mountain Time Sunday, November 1, 2026: at 2:00 AM clocks go back 1 hour to 1:00 AM
  2. Mountain Time Sunday, March 14, 2027: at 2:00 AM clocks go forward 1 hour to 3:00 AM
  3. Mountain Time Sunday, November 7, 2027: at 2:00 AM clocks go back 1 hour to 1:00 AM
  4. Mountain Time Sunday, March 12, 2028: at 2:00 AM clocks go forward 1 hour to 3:00 AM

About the two zones

Mountain Time (MST / MDT)

Mountain Time follows the clock in Denver: Mountain Standard Time (MST, UTC−7) in winter and Mountain Daylight Time (MDT, UTC−6) during US daylight saving time.

IANA zone
America/Denver
Offset
UTC−7 standard, UTC−6 daylight saving
Used in
the mountain states of the US and parts of Canada
Major cities
Denver, Salt Lake City, Albuquerque, Calgary, Edmonton, Boise

Most of Arizona stays on MST all year and does not switch to MDT. For Phoenix, pick America/Phoenix in the converter.

Coordinated Universal Time (UTC)

Coordinated Universal Time is the reference every time zone is measured from. It never changes for daylight saving time. Servers, aviation, logs and APIs use it because it is unambiguous.

IANA zone
Etc/UTC
Offset
UTC+0 all year
Used in
no single country; it is the world reference clock

MST and UTC, answered

What is the time difference between MST and UTC?

UTC is 6 hours ahead of MDT for most of the year (238 days in 2026). The gap is 7 hours for about 18 weeks in 2026.

How do I work out UTC from MST?

UTC is 6 hours ahead of MDT for most of the year (238 days in 2026). The gap is 7 hours for about 18 weeks in 2026. Type any MST time into the MST to UTC converter to see the UTC time for any date.

What is 9:00 AM MST in UTC?

9:00 AM MDT is 3:00 PM UTC for most of the year (238 days in 2026). 9:00 AM MST is 4:00 PM UTC for about 18 weeks in 2026.

What is 12:00 PM MST in UTC?

12:00 PM MDT is 6:00 PM UTC for most of the year (238 days in 2026). 12:00 PM MST is 7:00 PM UTC for about 18 weeks in 2026.

What is 10:00 AM MST in UTC?

10:00 AM MDT is 4:00 PM UTC for most of the year (238 days in 2026). 10:00 AM MST is 5:00 PM UTC for about 18 weeks in 2026.

What is 5:00 PM MST in UTC?

5:00 PM MDT is 11:00 PM UTC for most of the year (238 days in 2026). 5:00 PM MST is 12:00 AM (next day) UTC for about 18 weeks in 2026.

Is UTC ahead of MST, and by how many hours?

Yes. UTC is 6 hours ahead of MDT for most of the year (238 days in 2026). The gap is 7 hours for about 18 weeks in 2026.

What is a good meeting time for MST and UTC?

Working days of 9 AM to 5 PM overlap from 9:00 AM to 11:00 AM MDT, which is 3:00 PM to 5:00 PM UTC while MDT and UTC apply.

Does daylight saving time affect MST to UTC?

Mountain Time changes its clocks twice a year; Coordinated Universal Time does not. The next change is on Sunday, November 1, 2026 in Mountain Time.

Which MST does the MST to UTC converter use?

Most of Arizona stays on MST all year and does not switch to MDT. For Phoenix, pick America/Phoenix in the converter.

Related conversions

From Mountain Time

To Coordinated Universal Time