Convert PST to MST
Compare Pacific Standard Time and Mountain Standard Time with a live conversion table, meeting planner, and calendar export tools.
How PST to MST Works
This converter maps Pacific Standard Time (UTC-8) to Mountain Standard Time (UTC-7), showing the 1-hour difference instantly. It also accounts for timezone rules when standard time changes affect either region.
Hour-by-Hour Conversion Table
Use the visual grid and hour-by-hour table to compare PST and MST across the day. Export selected times with ICS download or send them to Google Calendar and Gmail.
Schedule Meetings Across Zones
Find suitable meeting times between Pacific Standard Time and Mountain Standard Time with side-by-side business-hour comparisons. DST tracking and historical rule changes are updated automatically using the IANA timezone database.
How to Convert PST to MST
PST (Pacific Standard Time, UTC-8) converts to MST (Mountain Standard Time, UTC-7) with Mountain Standard Time one hour ahead of Pacific Standard Time.
Looking for Pitcairn Standard Time? See /time-converter/pst-pitcairn-time-zone.
Open the PST to MST converter: Go to
https://www.xconvert.com/time-converter/pst-to-mst-converterto load a visual comparison grid with Pacific Standard Time and Mountain Standard Time aligned on a 24-hour timeline. This layout is useful when you are scheduling a sales call between California and Arizona, coordinating a logistics handoff across the western United States, or planning support coverage between teams in Canada, Mexico, and the United States.Add comparison cities if your schedule spans more than two locations: Click + Add City and search for cities that commonly work with Pacific Standard Time and Mountain Standard Time, such as Los Angeles, Phoenix, Denver, or Mexico City depending on your business route or client footprint. This is especially practical for industries like software, transportation, field services, and regional operations where one team may work on Pacific Standard Time while another follows Mountain Standard Time.
Drag to select the meeting window on the grid: Use the Select button if needed, then drag across the Pacific Standard Time row to highlight a range in purple; for example, drag from 9:00 PST to 12:00 PST to see the matching 10:00 MST to 13:00 MST window. You can then drag the center of the selection to test another slot or pull the left and right handles to resize it, which helps when deciding whether a late-afternoon Pacific Standard Time check-in like 15:00 PST = 16:00 MST or 18:00 PST = 19:00 MST still fits both teams’ working hours.
Export and share the selected time range: Once a range is selected, use the export options for ICS download, Google Calendar, Gmail, Copy to clipboard, or Share link to distribute the agreed slot. This is useful when a project manager needs to send a calendar hold to a distributed team, a recruiter wants to email interview times across western North America, or an operations lead wants everyone to receive the meeting in their own local calendar automatically.
Understanding the PST to MST Time Difference
Pacific Standard Time (UTC-8) is one hour behind Mountain Standard Time (UTC-7), so every Pacific Standard Time appointment shifts forward by one hour in Mountain Standard Time. In practical terms, 9:00 PST = 10:00 MST, 12:00 PST = 13:00 MST, 15:00 PST = 16:00 MST, and 18:00 PST = 19:00 MST, which makes side-by-side scheduling straightforward for teams working across the western part of North America.
Pacific Standard Time is a standard-time abbreviation, and its daylight saving counterpart is PDT. Mountain Standard Time is also a standard-time abbreviation, and its daylight saving counterpart is MDT. That matters because this page is specifically about Pacific Standard Time to Mountain Standard Time, not about daylight saving versions of those zones.
The difference on this page is the standard-time relationship: Mountain Standard Time remains one hour ahead of Pacific Standard Time. During parts of the year when regions switch from standard time to daylight time, the abbreviations used may change from PST to PDT or from MST to MDT, so users planning recurring meetings should confirm whether they are discussing standard time or daylight time before sending invites to teams in Canada, Mexico, and the United States.
Best Times for Calls and Meetings Between PST and MST
Pacific Standard Time and Mountain Standard Time are close enough that most same-day business communication works well, with Mountain Standard Time only one hour ahead. A morning meeting on the Pacific coast translates into a slightly later morning slot in Mountain Standard Time, which is often ideal for internal standups, customer success check-ins, and cross-office coordination.
A practical overlap starts with 9:00 PST = 10:00 MST, which is a strong option for teams that want to avoid very early starts while still preserving most of the workday. Midday scheduling also works cleanly: 12:00 PST = 13:00 MST is useful for lunch-adjacent meetings, vendor calls, and regional management updates where both sides are already fully online.
For later-day collaboration, 15:00 PST = 16:00 MST often suits project reviews, handoffs, and end-of-day status meetings. If a team needs an evening slot, 18:00 PST = 19:00 MST can work for urgent coordination, but it is usually better reserved for exceptions because it pushes the Mountain Standard Time side further into after-hours availability.
For recurring meetings, the best window is usually the shared business block from late morning Pacific Standard Time through mid-afternoon Pacific Standard Time, which appears one hour later in Mountain Standard Time. That pattern is especially useful for remote software teams, regional sales organizations, healthcare administration groups, and transportation networks operating across Canada, Mexico, and the United States.
Frequently Asked Questions
What is the time difference between PST and MST?
Pacific Standard Time is one hour behind Mountain Standard Time. In offset terms, Pacific Standard Time is UTC-8 and Mountain Standard Time is UTC-7, so when the same event is expressed in both zones, the Mountain Standard Time clock reads one hour later.
When is 9 AM PST in MST?
9:00 PST = 10:00 MST. This is one of the most common conversion searches because it falls inside normal business hours and is often used for team standups, client onboarding calls, and interview scheduling across western North America.
Does the difference between PST and MST change during DST?
For this page, the standard-time relationship is PST to MST, with Mountain Standard Time one hour ahead of Pacific Standard Time. Daylight saving matters because Pacific Standard Time changes to PDT and Mountain Standard Time changes to MDT in regions that observe daylight time, so the abbreviations used in calendars and emails may differ depending on the season.
What is the best meeting time between PST and MST?
A strong meeting window is late morning to mid-afternoon in Pacific Standard Time because it becomes late morning to late afternoon in Mountain Standard Time. Common examples include 9:00 PST = 10:00 MST, 12:00 PST = 13:00 MST, and 15:00 PST = 16:00 MST, all of which fit typical business coordination for sales, operations, and remote project teams.
How do I convert PST to MST quickly?
The simplest rule is to move Pacific Standard Time forward by one hour to get Mountain Standard Time. For example, 12:00 PST = 13:00 MST and 18:00 PST = 19:00 MST, which makes it easy to review meeting invites, flight-related coordination, or shift schedules without doing a complex calculation.
Is PST Pacific Standard Time or Pitcairn Standard Time?
On this page, PST means Pacific Standard Time (UTC-8). PST can also mean Pitcairn Standard Time (UTC-8), and if you need that meaning, use /time-converter/pst-pitcairn-time-zone to avoid mixing the two pages when scheduling or documenting time zones.
Which countries use PST and MST?
Pacific Standard Time is used in Canada, Mexico, and the United States, and Mountain Standard Time is also used in Canada, Mexico, and the United States. That shared regional footprint is why PST-to-MST conversion is common for cross-border business calls, transportation planning, customer support coverage, and regional management meetings across North America.