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