The short answer

Central Standard Time is 1 hour ahead of Mountain Time.

Central Standard Time
12:19:05am
CDT · UTC-05:00 · Mon, Jun 22
Mountain Time
11:19:05pm
MDT · UTC-06:00 · Sun, Jun 21
Read across to convert
Central Standard Time
CDT · UTC-05:00
12:19am ☾
Mountain Time
MDT · UTC-06:00
11:19pm ☾
Click any row to pin that hour across both zones.
NOW
12amMon
11pmSun ·−1d
1am
12amMon
2am
1am
3am
2am
4am
3am
5am
4am
6am
5am
7am
6am
8am
7am
9am
WORK
8am
10am
WORK
9am
WORK
11am
WORK
10am
WORK
12pm
WORK
11am
WORK
1pm
WORK
12pm
WORK
2pm
WORK
1pm
WORK
3pm
WORK
2pm
WORK
4pm
WORK
3pm
WORK
5pm
4pm
WORK
6pm
5pm
7pm
6pm
8pm
7pm
9pm
8pm
10pm
9pm
11pm
10pm
daylightnightworking hoursoverlap
Best time to meet
Best for a call
Central Standard Time
10am–5pm
=
Mountain Time
9am–4pm
Popular conversions

Quick reference.

9amCentral Standard Time=8amMountain Time
12pmCentral Standard Time=11amMountain Time
3pmCentral Standard Time=2pmMountain Time
5pmCentral Standard Time=4pmMountain Time
9pmCentral Standard Time=8pmMountain Time
In context

What each side covers.

Central Standard Time
CDT · UTC-05:00
12:19am
Cities on this clock
Mountain Time
MDT · UTC-06:00
11:19pm
Cities on this clock
Did you mean…? “CDT” is shared by several places. This page shows Central Standard Time (US & Canada) — or switch to China Standard Time · Cuba Standard Time.

Frequently asked

Quick answers about converting between Central Standard Time and Mountain Time. Can't find what you need? Email [email protected].

What is the time difference between Central Standard Time and Mountain Time?
Central Standard Time is 1 hour ahead of Mountain Time right now. We always show the live, daylight-saving-correct difference, so this figure already accounts for whichever side is observing summer time today.
When it's 9am in Central Standard Time, what time is it in Mountain Time?
9am in Central Standard Time is 8am in Mountain Time. Use the hour-by-hour table above to read any other time across — find the row and read the matching cell in the other column.
What's the best time for a call between Central Standard Time and Mountain Time?
10am–5pm in Central Standard Time lines up with 9am–4pm in Mountain Time — both sides are inside a 9-to-5 working day.
Does this account for daylight saving time?
Yes. We track every clock change in both places, so the abbreviations you see — CDT and MDT — are the ones actually in effect right now, not a fixed all-year value. When either side changes its clocks, this page updates automatically.
Why is the date sometimes different on each side?
When two places are far enough apart, the same moment can fall on different calendar days. That is why some conversions are marked "previous day" or "next day" — it is the same instant in time, read off two clocks that crossed midnight at different points.