Mountain Standard Time (MST) is UTC-7, used in the US mountain zone. See the live MST clock below and convert it to any city or time zone.
Key facts about Mountain Standard Time.
Mountain Standard Time covers the US mountain zone.
Mountain Standard Time (MST) is a standard-time abbreviation. In regions that observe daylight saving time, clocks move forward one hour in spring and the abbreviation changes for the summer months (for example EST becomes EDT, CST becomes CDT). During those months the UTC offset shifts by +1 hour.
Always check whether a given location is currently on standard or daylight time before converting — the offset shown here (UTC-7) is the standard-time value.
Compare MST with any city, or plan a meeting across zones.