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Timezone Prime

CST to MST converter

Convert Central Time (CST/CDT) to Mountain Time (MST/MDT), with daylight saving applied for the exact date you pick.

From

Tue, Oct 27

To

Tue, Oct 27 Same day

CDT 9 to 5 MDT 9 to 5

From zone
Central Daylight Time
Offset and clock
UTC−5 Daylight saving time
IANA name
America/Chicago
To zone
Mountain Daylight Time
Offset and clock
UTC−6 Daylight saving time
IANA name
America/Denver

MDT is 1 hour behind CDT.

Time difference
MDT is 1 hour behind CDT for most of the year (238 days in 2026). The gap is 2 hours for 0 days in 2026. The gap is 0 hours for 0 days in 2026.
Meeting window
Working days of 9 AM to 5 PM overlap from 10:00 AM to 5:00 PM CDT, which is 9:00 AM to 4:00 PM MDT while CDT and MDT apply.
Daylight saving
Both zones change their clocks, on the dates listed below, so the gap can shift during the year.

The same conversion works for every city on these clocks, such as Chicago to Denver, Chicago to Arizona and Texas to Denver.

Where CST and MST 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.

  • Central Time
  • Mountain 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.
Chicago (CDT) Denver (MDT) Working hours
12:00 AM 11:00 PM previous day
1:00 AM 12:00 AM
2:00 AM 1:00 AM
3:00 AM 2:00 AM
4:00 AM 3:00 AM
5:00 AM 4:00 AM
6:00 AM 5:00 AM
7:00 AM 6:00 AM
8:00 AM 7:00 AM
9:00 AM 8:00 AM
10:00 AM 9:00 AM Both working
11:00 AM 10:00 AM Both working
12:00 PM 11:00 AM Both working
1:00 PM 12:00 PM Both working
2:00 PM 1:00 PM Both working
3:00 PM 2:00 PM Both working
4:00 PM 3:00 PM Both working
5:00 PM 4:00 PM
6:00 PM 5:00 PM
7:00 PM 6:00 PM
8:00 PM 7:00 PM
9:00 PM 8:00 PM
10:00 PM 9:00 PM
11:00 PM 10:00 PM

CST to MST conversion table

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

CST to MST conversion table
Central Time MDT or MST 1 h behind, all year MST 2 h behind, 0 days in 2026
12:00 AM 11:00 PM (previous day)10:00 PM (previous day)
1:00 AM 12:00 AM11:00 PM (previous day)
2:00 AM 1:00 AM12:00 AM
3:00 AM 2:00 AM1:00 AM
4:00 AM 3:00 AM2:00 AM
5:00 AM 4:00 AM3:00 AM
6:00 AM 5:00 AM4:00 AM
7:00 AM 6:00 AM5:00 AM
8:00 AM 7:00 AM6:00 AM
9:00 AM 8:00 AM7:00 AM
9:30 AM 8:30 AM7:30 AM
10:00 AM 9:00 AM8:00 AM
10:30 AM 9:30 AM8:30 AM
11:00 AM 10:00 AM9:00 AM
11:30 AM 10:30 AM9:30 AM
12:00 PM 11:00 AM10:00 AM
12:30 PM 11:30 AM10:30 AM
1:00 PM 12:00 PM11:00 AM
1:30 PM 12:30 PM11:30 AM
2:00 PM 1:00 PM12:00 PM
2:30 PM 1:30 PM12:30 PM
3:00 PM 2:00 PM1:00 PM
3:30 PM 2:30 PM1:30 PM
4:00 PM 3:00 PM2:00 PM
4:30 PM 3:30 PM2:30 PM
5:00 PM 4:00 PM3:00 PM
5:30 PM 4:30 PM3:30 PM
6:00 PM 5:00 PM4:00 PM
7:00 PM 6:00 PM5:00 PM
8:00 PM 7:00 PM6:00 PM
9:00 PM 8:00 PM7:00 PM
10:00 PM 9:00 PM8:00 PM
11:00 PM 10:00 PM9:00 PM

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 CST and MST
Dates CST MST Difference
Thu, Jan 1, 2026 until Sun, Mar 8, 2026 CST MST MST 1 h behind
Sun, Mar 8, 2026 until Sun, Mar 8, 2026 CDT MST MST 2 h behind
Sun, Mar 8, 2026 until Sun, Nov 1, 2026 CDT MDT MDT 1 h behind
Sun, Nov 1, 2026 until Sun, Nov 1, 2026 CST MDT Same time
Sun, Nov 1, 2026 until Sun, Mar 14, 2027 CST MST MST 1 h behind
Sun, Mar 14, 2027 until Sun, Mar 14, 2027 CDT MST MST 2 h behind
Sun, Mar 14, 2027 until Sun, Nov 7, 2027 CDT MDT MDT 1 h behind
Sun, Nov 7, 2027 until Sun, Nov 7, 2027 CST MDT Same time
Sun, Nov 7, 2027 until Sat, Jan 1, 2028 CST MST MST 1 h behind

Upcoming clock changes

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

About the two zones

Central Time (CST / CDT)

Central Time follows the clock in Chicago: Central Standard Time (CST, UTC−6) in winter and Central Daylight Time (CDT, UTC−5) during US daylight saving time.

IANA zone
America/Chicago
Offset
UTC−6 standard, UTC−5 daylight saving
Used in
the central United States and parts of Canada
Major cities
Chicago, Houston, Dallas, Minneapolis, Winnipeg, New Orleans

CST is also used for China Standard Time (UTC+8) and Cuba Standard Time. Here CST means US Central Time (America/Chicago).

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.

CST and MST, answered

What is the time difference between CST and MST?

MDT is 1 hour behind CDT for most of the year (238 days in 2026). The gap is 2 hours for 0 days in 2026. The gap is 0 hours for 0 days in 2026.

How do I work out the time in Denver from CST?

Denver uses Mountain Time. MDT is 1 hour behind CDT for most of the year (238 days in 2026). The gap is 2 hours for 0 days in 2026. The gap is 0 hours for 0 days in 2026. Type any CST time into the CST to MST converter to see the Denver time for any date.

What is 9:00 AM CST in MST?

9:00 AM CDT or CST is 8:00 AM MDT or MST for all year. 9:00 AM CDT is 7:00 AM MST for 0 days in 2026.

What is 12:00 PM CST in MST?

12:00 PM CDT or CST is 11:00 AM MDT or MST for all year. 12:00 PM CDT is 10:00 AM MST for 0 days in 2026.

What is 10:00 AM CST in MST?

10:00 AM CDT or CST is 9:00 AM MDT or MST for all year. 10:00 AM CDT is 8:00 AM MST for 0 days in 2026.

What is 5:00 PM CST in MST?

5:00 PM CDT or CST is 4:00 PM MDT or MST for all year. 5:00 PM CDT is 3:00 PM MST for 0 days in 2026.

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

No, MST is behind CST. MDT is 1 hour behind CDT for most of the year (238 days in 2026). The gap is 2 hours for 0 days in 2026. The gap is 0 hours for 0 days in 2026.

What is a good meeting time for CST and MST?

Working days of 9 AM to 5 PM overlap from 10:00 AM to 5:00 PM CDT, which is 9:00 AM to 4:00 PM MDT while CDT and MDT apply.

Does daylight saving time affect CST to MST?

Both zones change their clocks, on their own dates, so the gap can shift during the year. The next change is on Sunday, November 1, 2026 in Central Time.

Which CST does the CST to MST converter use?

CST is also used for China Standard Time (UTC+8) and Cuba Standard Time. Here CST means US Central Time (America/Chicago).

Which MST does the CST to MST 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 Central Time

To Mountain Time