Time zone converter/PST to MST
PST to MST Converter
Mountain Standard Time (MST) is 1 hour ahead of Pacific Standard Time (PST). To convert PST to MST, add 1 hour.
- 8:00 AM PST→9:00 AM MST
- 10:00 AM PST→11:00 AM MST
- 11:00 AM PST→12:00 PM MST
- 1:00 PM PST→2:00 PM MST
- 2:00 PM PST→3:00 PM MST
MST = PST + 1 hour · PST = MST − 1 hour
From
Pacific Standard Time (PST)
—
To
Mountain Standard Time (MST)
—
The converted time appears in the result below.
Calculating time difference
Pick a date and time above.
MST = PST + 1 hour · PST = MST − 1 hour
PST and MST stay on standard time all year — they don’t switch for daylight saving. Use PT to MT when you want Pacific Time to Mountain Time (Denver) for a specific day, including PDT or MDT when local clocks are on daylight time.
PST to MST Conversion Table
Every hour of the day. Highlighted rows are common conversions. If you see +1 next to MST, that Mountain time falls on the next calendar day.
| PST | MST | Note |
|---|---|---|
| 12:00 AM PST | 1:00 AM MST | — |
| 1:00 AM PST | 2:00 AM MST | — |
| 2:00 AM PST | 3:00 AM MST | — |
| 3:00 AM PST | 4:00 AM MST | — |
| 4:00 AM PST | 5:00 AM MST | — |
| 5:00 AM PST | 6:00 AM MST | — |
| 6:00 AM PST | 7:00 AM MST | — |
| 7:00 AM PST | 8:00 AM MST | — |
| 8:00 AM PST | 9:00 AM MST | — |
| 9:00 AM PST | 10:00 AM MST | — |
| 10:00 AM PST | 11:00 AM MST | Popular |
| 11:00 AM PST | 12:00 PM MST | Popular |
| 12:00 PM PST | 1:00 PM MST | — |
| 1:00 PM PST | 2:00 PM MST | Popular |
| 2:00 PM PST | 3:00 PM MST | Popular |
| 3:00 PM PST | 4:00 PM MST | — |
| 4:00 PM PST | 5:00 PM MST | — |
| 5:00 PM PST | 6:00 PM MST | — |
| 6:00 PM PST | 7:00 PM MST | — |
| 7:00 PM PST | 8:00 PM MST | — |
| 8:00 PM PST | 9:00 PM MST | — |
| 9:00 PM PST | 10:00 PM MST | — |
| 10:00 PM PST | 11:00 PM MST | — |
| 11:00 PM PST | 12:00 AM MST +1 | Next day |
Popular PST to MST Conversions
Quick answers for the times people look up most between Pacific and Mountain — as PST/MST, or as everyday Pacific Time to Mountain Time.
11 AM Pacific Time to Mountain Time
11:00 AM Pacific Time is normally 12:00 PM Mountain Time. If you keep both on standard time, 11 AM PST is 12 PM MST.
2 PM PST to MST
2:00 PM PST is 3:00 PM MST. Mid-afternoon on the Pacific coast is one hour later in Mountain Time.
10 AM PST to MST
10:00 AM PST is 11:00 AM MST. Same one-hour step on standard time: add an hour and you are on Mountain.
1 PM PST to MST
1:00 PM PST is 2:00 PM MST. Early afternoon Pacific lines up with mid-afternoon Mountain — still just add one hour.
Pacific Time to Mountain Time
Pacific Time is normally 1 hour behind Mountain Time. For example, 11 AM Pacific Time is normally 12 PM Mountain Time. Day to day, PT to MT usually follows that same one-hour gap.
PT means Pacific Time — PST in winter, PDT in summer. MT means Mountain Time (Denver) — MST in winter, MDT in summer. If a meeting invite only says “Pacific” or “Mountain,” pick the meeting date so the result matches what local clocks show that day.
What Is the Time Difference Between PST and MST?
Pacific Standard Time is UTC−8 and Mountain Standard Time is UTC−7. MST is 1 hour ahead of PST, so add 1 hour when converting PST to MST. That gap stays the same all year as long as both sides are on standard time.
- PST = UTC−8
- MST = UTC−7
- MST = PST + 1 hour
- PST = MST − 1 hour
Example: 10 AM PST is 11 AM MST. 2 PM PST is 3 PM MST. Subtract one hour to go from MST back to PST.
PST/MST vs PT/MT: What’s the Difference?
| Term | Meaning |
|---|---|
| PST | Pacific Standard Time · UTC−8 |
| PDT | Pacific Daylight Time · UTC−7 |
| PT | Pacific Time · PST or PDT |
| MST | Mountain Standard Time · UTC−7 |
| MDT | Mountain Daylight Time · UTC−6 |
| MT | Mountain Time · MST or MDT |
Most of the US Pacific coast and the Mountain region around Denver change clocks in the same weeks of spring and fall. So everyday Pacific Time to Mountain Time usually stays one hour apart in winter and in summer. What changes is the name on the clock: PST/MST in standard time, PDT/MDT in daylight time.
On a January workday, 11 AM PST is 12 PM MST. On a July workday, 11 AM PDT is 12 PM MDT — still one hour, different names. PST to MST always uses standard time, even in July. Pacific Time to Mountain Time follows the date you enter and shows PDT or MDT when local clocks are on daylight time.
Mountain Time here means the Denver clock. Arizona stays on MST in summer and does not change for daylight saving — choose Arizona if that is the place you mean.
Use PST → MST when both sides should stay on standard time. Use PT → MT when you want Pacific and Mountain local time for the day you pick.
Current Pacific and Mountain Time
Pacific Time and Mountain Time (Denver) right now, with the name each region is using this season. The PST and MST cards below always stay on standard time, even when local clocks show PDT or MDT.
Pacific Time
--:--
PT
Mountain Time (Denver)
--:--
MT
PST
UTC−8
Standard time all year
MST
UTC−7
Standard time all year
Pacific to Mountain Time Meeting Planner
Workday hours on standard time. Highlighted rows are easier on both sides — roughly 9 AM to 4 PM Pacific / 10 AM to 5 PM Mountain. For a summer meeting on local Pacific and Mountain time, switch to PT → MT and choose the meeting date.
| Pacific | Mountain | For calls |
|---|---|---|
| 8:00 AM | 9:00 AM | Early start (8 AM Pacific / 9 AM Mountain) |
| 9:00 AM | 10:00 AM | Works well for both (9 AM / 10 AM Mountain) |
| 10:00 AM | 11:00 AM | Works well for both (10 AM / 11 AM Mountain) |
| 11:00 AM | 12:00 PM | Works well for both (11 AM / noon Mountain) |
| 12:00 PM | 1:00 PM | Works well for both (noon / 1 PM Mountain) |
| 1:00 PM | 2:00 PM | Works well for both (1 PM / 2 PM Mountain) |
| 2:00 PM | 3:00 PM | Works well for both (2 PM / 3 PM Mountain) |
| 3:00 PM | 4:00 PM | Works well for both (3 PM / 4 PM Mountain) |
| 4:00 PM | 5:00 PM | Late day, still workable (4 PM / 5 PM Mountain) |
| 5:00 PM | 6:00 PM | Late for Pacific (5 PM Pacific / 6 PM Mountain) |
MST to PST Converter
Going the other way? Subtract 1 hour from an MST time to get PST.
About These Time Zones
Open a zone page for the fixed abbreviation, or the regional clock that follows daylight saving for the date you pick.
PST to MST FAQ
- What is 11 AM Pacific Time in Mountain Time?
- 11 AM Pacific Time is normally 12 PM Mountain Time. If you keep both on standard time, 11 AM PST is 12 PM MST.
- What is 2 PM PST in MST?
- 2 PM PST is 3 PM MST. Add one hour. Going the other way, 3 PM MST is 2 PM PST.
- What is 10 AM PST in MST?
- 10 AM PST is 11 AM MST. When both regions share the same season, 10 AM Pacific Time is usually 11 AM Mountain Time too.
- How many hours is MST ahead of PST?
- One hour. PST is UTC−8 and MST is UTC−7, so MST = PST + 1 hour.
- How do I convert PST to MST?
- Add 1 hour (MST = PST + 1; PST = MST − 1). Examples: 10 AM PST → 11 AM MST; 2 PM PST → 3 PM MST.
- Is Mountain Time one hour ahead of Pacific Time?
- Yes — 11 AM Pacific is usually 12 PM Mountain. PT and MT are the everyday labels; winter clocks often read PST/MST, summer PDT/MDT.
- What is the difference between PST/MST and PT/MT?
- PST and MST always mean standard time (UTC−8 and UTC−7). PT and MT are everyday Pacific and Mountain time — standard in winter, daylight in summer. Use PST → MST when both sides should stay on standard time; use PT → MT when you care about a specific day.