CST to MST time difference
Right now US Mountain Time is 1 hour behind US Central Time: when it is 9:00 AM in US Central Time (CDT), it is 8:00 AM in US Mountain Time (MDT). Both places change their clocks on the same nights, so the difference stays the same all year.
CT, CST and CDT; MT, MST and MDT
CT means Central Time, whatever the season. It is CST (Central Standard Time, UTC-6) from early November to mid-March and CDT (Central Daylight Time, UTC-5) the rest of the year. Today it is CDT. MT means Mountain Time, whatever the season. It is MST (Mountain Standard Time, UTC-7) from early November to mid-March and MDT (Mountain Daylight Time, UTC-6) the rest of the year. Today it is MDT. Most of Arizona stays on MST all year, so in summer Arizona has the same clock time as Pacific Time; this page follows Denver, which changes the clocks. Because all of these zones change their clocks on the same nights, the gap between CT and MT stays 1 hour all year. People often write "EST" all year when they mean Eastern Time; the times on this page are correct either way.
CST to MST conversion table
Every hour of the day in US Central Time and the matching time in US Mountain Time, for today, October 13, 2026.
| CST (US Central Time) | MST (US Mountain Time) |
|---|---|
| 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 |
| 11:00 AM | 10:00 AM |
| 12:00 PM | 11:00 AM |
| 1:00 PM | 12:00 PM |
| 2:00 PM | 1:00 PM |
| 3:00 PM | 2:00 PM |
| 4:00 PM | 3:00 PM |
| 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 |
Scheduling tips
The gap is small, so normal working hours mostly overlap. When you share a time, write the zone with it, such as "9:00 AM CST", and remember that a time near midnight can fall on a different date on the other side.
Reverse: MST to CST. Other converters: CST to PKT · CST to EST · EST to MST · PST to MST · CST to PST · CST to GMT · any time zone to your time
Frequently asked questions
What is the time difference between CST and MST?
Right now US Mountain Time is 1 hour behind US Central Time.
What time is it in US Mountain Time when it is 9 AM in US Central Time?
8:00 AM.
What is 8 PM CST in MST?
7:00 PM MDT.
Does the CST to MST difference change during the year?
No. Both places switch to and from daylight saving time on the same nights, so the gap stays the same all year.
How do I convert CST to MST?
Enter the CST time and date at the top. The converter applies the difference for that date, including daylight saving time.
What is 12 PM CST in MST?
11:00 AM today.
What is 6 PM CST in MST?
5:00 PM today.
What is the best time for a call between US Central Time and US Mountain Time?
Pick a time that is in working hours in both places; the hour-by-hour table on this page shows both clocks side by side.