Compare MST vs CST
See the current time difference between MST and CST, how daylight saving affects the gap, and the best hours to schedule meetings.
How to Find the Time Difference Between MST and CST
Open the MST vs CST converter: Go to https://www.xconvert.com/time-converter/mst-vs-cst to open the visual comparison page with MST and CST already loaded as separate rows on the time grid. This view is useful when you need to schedule a support handoff between Denver-area teams on Mountain Time and Chicago, Dallas, or Mexico City contacts on Central Time without calculating the offset manually.
Add other relevant cities with the + Add City button: Click + Add City and search for cities such as Phoenix, Denver, Chicago, or Mexico City to compare how different parts of the Mountain and Central regions behave across the year. This is especially helpful for logistics, airline operations, retail chains, and remote teams because Phoenix stays on Arizona time year-round while Chicago follows U.S. daylight saving time, which can change the practical meeting window in spring and fall.
Drag across the grid to select a meeting window: Click Select if needed, then drag across the colored timeline on the MST row to highlight a range in purple, such as 9:00 AM to 11:00 AM MST. That selection shows immediately as 10:00 AM to 12:00 PM CST, confirming that Central Time is normally 1 hour ahead of Mountain Time, which is useful for setting sales calls, dispatch coordination, or a same-day project check-in.
Export the selected time for your team or clients: After selecting the range, use the export options shown on the page — ICS download, Google Calendar, Gmail, Copy to clipboard, or Share link — to send the converted time without retyping anything. For example, a distributed operations team can send an ICS file so warehouse staff in Mountain Time and customer service staff in Central Time both see the event in their own local calendar automatically.
MST vs CST Offset Explained
MST is 1 hour behind CST. In standard-time terms, Mountain Standard Time (MST) is UTC-7 and Central Standard Time (CST) is UTC-6. That means when it is 9:00 AM MST, it is 10:00 AM CST, and when it is 5:00 PM CST, it is 4:00 PM MST.
The seasonal detail matters because many locations do not stay on standard time all year. In the United States and Canada, clocks typically switch to daylight saving time on the second Sunday in March and return on the first Sunday in November. In 2026, that means the DST period runs from March 8, 2026 to November 1, 2026 for most U.S. observances.
During that daylight period, many Mountain Time locations move from MST (UTC-7) to MDT (UTC-6), and many Central Time locations move from CST (UTC-6) to CDT (UTC-5). Because both regions usually shift forward by one hour at the same time, the difference between them remains 1 hour in most U.S.-to-U.S. comparisons, so 9:00 AM in Denver is still 10:00 AM in Chicago during daylight time.
However, not every place follows DST. Arizona is the most important exception in the Mountain region: most of the state, including Phoenix, stays on MST (UTC-7) all year and does not switch to MDT. This creates seasonal differences: in summer, Phoenix is 2 hours behind Chicago because Phoenix remains at UTC-7 while Chicago moves to CDT (UTC-5), so 9:00 AM in Phoenix becomes 11:00 AM in Chicago.
This distinction matters for real scheduling. A transportation company coordinating truck arrivals between Arizona distribution centers and Illinois warehouses, or a software team split between Phoenix and Austin, cannot assume the offset is always the same as Denver-to-Chicago. The xconvert grid helps you see these changes visually on a specific date, which is especially useful around March and November clock changes when missed meetings are most common.
Frequently Asked Questions
What is the time difference between MST and CST right now?
The standard offset is 1 hour, with CST ahead of MST. In plain terms, if it is 8:00 AM MST, it is 9:00 AM CST. For most U.S. locations that observe the same daylight saving schedule, the practical difference stays at 1 hour year-round, but Arizona can differ seasonally from Central Time cities that observe DST.
Is Central Time always one hour ahead of Mountain Time?
For most common U.S. comparisons, yes, Central Time is 1 hour ahead of Mountain Time. But the exact labels change by season: winter is usually MST vs CST, while summer is more often MDT vs CDT in places that observe daylight saving time. The exception is Arizona, where cities like Phoenix remain on MST all year, so the gap versus Central Time can become 2 hours during the summer daylight period.
Does daylight saving time change the difference between MST and CST?
Usually, no — not when both locations observe the same DST schedule. If one Mountain Time city and one Central Time city both spring forward in March and fall back in November, the difference remains 1 hour because both clocks move together. The main complication happens when comparing a non-DST location such as Phoenix with a DST-observing Central city such as Chicago or Dallas.
When do MST and CST change for daylight saving time?
In most U.S. and Canadian areas that observe DST, clocks move forward on the second Sunday in March and move back on the first Sunday in November. In 2026, that means the change to daylight time happens on March 8, 2026, and the return to standard time happens on November 1, 2026. If your meeting is near those dates, checking the exact day on the converter is important because international partners or Arizona-based teams may not follow the same schedule.
How do I convert 9 AM MST to CST?
Add 1 hour to convert from MST to CST. So 9:00 AM MST = 10:00 AM CST, 1:00 PM MST = 2:00 PM CST, and 6:00 PM MST = 7:00 PM CST. This is useful for planning internal meetings, customer demos, or dispatch windows between Mountain and Central offices.
Why does Phoenix not always match other Mountain Time cities?
Phoenix is in Arizona, and most of Arizona does not observe daylight saving time, so it stays on MST (UTC-7) throughout the year. Denver, by contrast, shifts between MST (UTC-7) in winter and MDT (UTC-6) in summer. That means Phoenix and Denver match in winter, but in summer Phoenix is 1 hour behind Denver, and Phoenix can be 2 hours behind Chicago while Chicago is on CDT.
What are good meeting hours between MST and CST teams?
Because the offset is only 1 hour in most cases, there is a broad overlap for business scheduling. A window like 9:00 AM to 3:00 PM MST maps to 10:00 AM to 4:00 PM CST, which works well for sales teams, healthcare administration, SaaS support, and regional operations groups. If one side is in Arizona, verify the date first, especially during summer, because the overlap may shift relative to Central Time offices.
Is MST the same as Mountain Time?
Not always. MST specifically means Mountain Standard Time (UTC-7), while Mountain Time can refer to either MST in winter or MDT in summer in locations that observe daylight saving time. This distinction matters when writing contracts, booking flights, or sending calendar invites, because “Mountain Time” is broader than the exact standard-time label “MST.”