Convert Mountain Time (MST) to UTC. UTC is 7 hours ahead of MST in winter, and UTC is 6 hours ahead of MDT in summer. Updated for the 2026 time zone changes and current daylight saving rules.
Need a city instead? Use the time zone converter.
| MST | Nov–Mar (MST → UTC) | Mar–Nov (MDT → UTC) |
|---|---|---|
| 12:00 AM | 7:00 AM | 6:00 AM |
| 1:00 AM | 8:00 AM | 7:00 AM |
| 2:00 AM | 9:00 AM | 8:00 AM |
| 3:00 AM | 10:00 AM | 9:00 AM |
| 4:00 AM | 11:00 AM | 10:00 AM |
| 5:00 AM | 12:00 PM | 11:00 AM |
| 6:00 AM | 1:00 PM | 12:00 PM |
| 7:00 AM | 2:00 PM | 1:00 PM |
| 8:00 AM | 3:00 PM | 2:00 PM |
| 9:00 AM | 4:00 PM | 3:00 PM |
| 10:00 AM | 5:00 PM | 4:00 PM |
| 11:00 AM | 6:00 PM | 5:00 PM |
| 12:00 PM | 7:00 PM | 6:00 PM |
| 1:00 PM | 8:00 PM | 7:00 PM |
| 2:00 PM | 9:00 PM | 8:00 PM |
| 3:00 PM | 10:00 PM | 9:00 PM |
| 4:00 PM | 11:00 PM | 10:00 PM |
| 5:00 PM | 12:00 AM (next day) | 11:00 PM |
| 6:00 PM | 1:00 AM (next day) | 12:00 AM (next day) |
| 7:00 PM | 2:00 AM (next day) | 1:00 AM (next day) |
| 8:00 PM | 3:00 AM (next day) | 2:00 AM (next day) |
| 9:00 PM | 4:00 AM (next day) | 3:00 AM (next day) |
| 10:00 PM | 5:00 AM (next day) | 4:00 AM (next day) |
| 11:00 PM | 6:00 AM (next day) | 5:00 AM (next day) |
This uses Mountain Time as in Denver, which changes clocks. Arizona stays on MST (UTC−7) all year. Alberta no longer uses MST at all: since Nov 1, 2026 it stays at UTC−6, so in winter Calgary is an hour ahead of Denver. Yukon, Creston and BC’s Peace River region are at UTC−7 all year.
UTC never changes, so the gap with North American time zones shifts by an hour when they change their clocks.
UTC is 7 hours ahead of MST in winter, and UTC is 6 hours ahead of MDT in summer.
9:00 AM MST is 4:00 PM UTC in winter, and 9:00 AM MDT is 3:00 PM UTC in summer.
12:00 PM MST is 7:00 PM UTC in winter, and 12:00 PM MDT is 6:00 PM UTC in summer.
5:00 PM MST is 12:00 AM (next day) UTC in winter, and 5:00 PM MDT is 11:00 PM UTC in summer.
MST is often used loosely for Mountain Time all year. Strictly, MST is the winter time and MDT is the summer time, from the second Sunday in March to the first Sunday in November. The converter above shows the right one for the date you pick.
This uses Mountain Time as in Denver, which changes clocks. Arizona stays on MST (UTC−7) all year. Alberta no longer uses MST at all: since Nov 1, 2026 it stays at UTC−6, so in winter Calgary is an hour ahead of Denver. Yukon, Creston and BC’s Peace River region are at UTC−7 all year.
UTC never changes, so the gap with North American time zones shifts by an hour when they change their clocks.