CST to MST Converter
Convert time between Central Standard Time (CST) and Mountain Time (MST/MDT).
Convert a specific time
- IndiaIST, UTC+5:30
- Eastern Time – New YorkEDT, UTC-4
- Central Time – ChicagoCDT, UTC-5
- Mountain Time – DenverMDT, UTC-6
- Arizona – PhoenixMST, UTC-7
- Pacific Time – Los AngelesPDT, UTC-7
- Mexico CityCST, UTC-6
- Saskatchewan – ReginaCST, UTC-6
- UTC / GMTUTC, UTC+0
- United Kingdom – LondonBST, UTC+1
- Central Europe – Paris, BerlinCEST, UTC+2
- Gulf – DubaiGST, UTC+4
- SingaporeSGT, UTC+8
- Japan – TokyoJST, UTC+9
- Australia Eastern – SydneyAEST, UTC+10
- EST (always UTC-5)Fixed offset, no DST
- CST (always UTC-6)Fixed offset, no DST
- MST (always UTC-7)Fixed offset, no DST
- PST (always UTC-8)Fixed offset, no DST
- IndiaIST, UTC+5:30
- Eastern Time – New YorkEDT, UTC-4
- Central Time – ChicagoCDT, UTC-5
- Mountain Time – DenverMDT, UTC-6
- Arizona – PhoenixMST, UTC-7
- Pacific Time – Los AngelesPDT, UTC-7
- Mexico CityCST, UTC-6
- Saskatchewan – ReginaCST, UTC-6
- UTC / GMTUTC, UTC+0
- United Kingdom – LondonBST, UTC+1
- Central Europe – Paris, BerlinCEST, UTC+2
- Gulf – DubaiGST, UTC+4
- SingaporeSGT, UTC+8
- Japan – TokyoJST, UTC+9
- Australia Eastern – SydneyAEST, UTC+10
- EST (always UTC-5)Fixed offset, no DST
- CST (always UTC-6)Fixed offset, no DST
- MST (always UTC-7)Fixed offset, no DST
- PST (always UTC-8)Fixed offset, no DST
Time Difference
Central Time is 1 hour ahead of Mountain Time right now.
- Now until Nov 1, 2026: Central Time is 1 hour ahead of Mountain Time (CDT → MDT).
- Nov 1, 2026 – Nov 1, 2026: Central Time and Mountain Time show the same time (CST → MDT).
- Nov 1, 2026 – Mar 14, 2027: Central Time is 1 hour ahead of Mountain Time (CST → MST).
- Mar 14, 2027 – Mar 14, 2027: Central Time is 2 hours ahead of Mountain Time (CDT → MST).
- From Mar 14, 2027: Central Time is 1 hour ahead of Mountain Time (CDT → MDT).
Central Time is on CDT right now, not CST
Mountain Time is on MDT right now, not MST
Best time to call
Convenient overlapping hours on Saturday, September 19, 2026.
| CST (Central Time) | MDT (Mountain Time) |
|---|---|
| 10:00 AM | 9:00 AM |
| 11:00 AM | 10:00 AM |
| 12:00 PM | 11:00 AM |
| 1:00 PM | 12:00 PM |
These hours fall within 9 AM–5 PM in both places.
Convert another time zone Plan a meeting across CST and MSTCST to MST conversion table
For Saturday, September 19, 2026 in Central Time.
| CDT | MDT |
|---|---|
| 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 |
About these time zones
Central Standard Time (CST)
Central Standard Time (CST) is UTC-6. Most of the central United States and Manitoba use CST only in winter and switch to Central Daylight Time (CDT, UTC-5) from the second Sunday in March to the first Sunday in November. Most of Saskatchewan, most of Mexico and much of Central America stay on CST all year.
Mountain Standard Time (MST)
Mountain Standard Time (MST) is UTC-7. Denver, Salt Lake City, Alberta and most of the Mountain region use MST in winter and Mountain Daylight Time (MDT, UTC-6) in summer. Arizona (except the Navajo Nation), Sonora, several other Mexican states, Yukon and parts of British Columbia use UTC-7 all year, so in summer they match Pacific Daylight Time.
CST to MST FAQs
What time is it in MST when it is 9 AM CST?
On Saturday, September 19, 2026, 9:00 AM CDT is 8:00 AM MDT in Mountain Time.
How many hours ahead is CST from MST?
It depends on the time of year because of daylight saving time. Now until Nov 1, 2026: Central Time is 1 hour ahead of Mountain Time (CDT → MDT). Nov 1, 2026 – Nov 1, 2026: Central Time and Mountain Time show the same time (CST → MDT).
Should I use MST or MDT?
Mountain Time is on MDT (UTC-6) on Saturday, September 19, 2026. Many people write “MST” all year, but strictly MST means Mountain Standard Time (always UTC-7). This converter follows the real local time in Mountain Time, including daylight saving time.
What is the best time for a call between CST and MST?
On Saturday, September 19, 2026, good options are 10:00 AM CDT (9:00 AM MDT), 11:00 AM CDT (10:00 AM MDT), 12:00 PM CDT (11:00 AM MDT), 1:00 PM CDT (12:00 PM MDT). These fall within normal 9 AM–5 PM working hours in both places.
Does CST change for daylight saving time?
The region changes: Central Time switches between CST and CDT, so conversions depend on the date. CST itself always means UTC-6.
Does MST change for daylight saving time?
The region changes: Mountain Time switches between MST and MDT, so conversions depend on the date. MST itself always means UTC-7.