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CompressNConvert

MST to PST Converter

Convert Mountain Time to Pacific Time, with daylight-saving time handled automatically.

MST → PST

11:00 AM

Wednesday, January 15, 2025

MST to PST conversion chart

Each hour of the day in MST and its equivalent in PST.

MSTPST
12:00 AM11:00 PM (previous day)
1:00 AM12:00 AM
2:00 AM1:00 AM
3:00 AM2:00 AM
4:00 AM3:00 AM
5:00 AM4:00 AM
6:00 AM5:00 AM
7:00 AM6:00 AM
8:00 AM7:00 AM
9:00 AM8:00 AM
10:00 AM9:00 AM
11:00 AM10:00 AM
12:00 PM11:00 AM
1:00 PM12:00 PM
2:00 PM1:00 PM
3:00 PM2:00 PM
4:00 PM3:00 PM
5:00 PM4:00 PM
6:00 PM5:00 PM
7:00 PM6:00 PM
8:00 PM7:00 PM
9:00 PM8:00 PM
10:00 PM9:00 PM
11:00 PM10:00 PM

Time zone details

Mountain Time

Canada, Mexico, United States

Abbreviation
MST/MDT
Current UTC offset
UTC-7
Daylight saving
Observed
Major cities
Denver, El Paso, Albuquerque, Colorado Springs +5 more

Pacific Time

Canada, Mexico, United States

Abbreviation
PST/PDT
Current UTC offset
UTC-8
Daylight saving
Observed
Major cities
Los Angeles, San Diego, San Jose, San Francisco +8 more

Cities in these time zones

A time zone is a rule, not a place. Cities that keep the same standard offset and switch their clocks on the same dates share one time zone, so they are listed together here and appear as a single option in the pickers above. Berlin, Paris, Madrid, and Rome are all Central European Time; New York and Toronto are both Eastern Time. Cities that merely happen to read the same right now stay separate — London and Abidjan both show UTC+0 each winter, but only London moves to UTC+1 in summer, so converting to one is not the same as converting to the other.

Every city below converts identically, on every date, including daylight-saving changeovers. Pick whichever name you recognise — the result is the same.

Mountain Time

MST/MDT · UTC-7

9 cities across 3 countries · 3 IANA zones

Canada
Calgary, Edmonton, Lethbridge, Red Deer
Mexico
Ciudad Juárez
United States
Denver, El Paso, Albuquerque, Colorado Springs

Pacific Time

PST/PDT · UTC-8

12 cities across 3 countries · 3 IANA zones

Canada
Vancouver, Surrey, Victoria, Burnaby
Mexico
Tijuana, Mexicali, Ensenada, Rosarito
United States
Los Angeles, San Diego, San Jose, San Francisco

Complete tool guide

How to use the MST to PST Time Zone Converter: dates, times, formats, and limitations

The MST to PST Time Zone Converter is a free online time-and-date utility that converts a time in Mountain Time to Pacific Time. It turns calendar or timestamp information into a structured result without requiring a spreadsheet formula, command-line script, or manual calendar count.

Date calculations need more care than ordinary arithmetic because months have different lengths, leap years add a day, local clocks use time zones and daylight-saving rules, and business-day conventions vary. The tool makes its browser-based calculation repeatable while the guide below explains the assumptions you should verify.

Why use this tool?

  • Calculate or inspect calendar information without manually counting through months and leap years.
  • Change inputs quickly to compare schedules, deadlines, durations, timestamps, and planning scenarios.
  • See multiple related representations and totals together rather than converting each field separately.
  • Copy useful values into development, reporting, travel, operations, or project-planning workflows.
  • Run the calculation in the browser without submitting entered dates to a date-calculation service.

Common use cases

  • Scheduling calls or meetings between Mountain Time and Pacific Time regions.
  • Planning travel, broadcasts, or deadlines across the two zones.
  • Checking a spreadsheet, application, database, API, calendar, or manually calculated date result.
  • Translating technical time data into a form that colleagues or customers can understand.

How to use it

  1. 1

    Enter a date, a time in MST and confirm whether the value should be interpreted in local time or UTC.

  2. 2

    Choose the operation or output mode that matches the question you need to answer.

  3. 3

    Review the main converted time and the supporting breakdown, paying attention to direction, time zone, and included endpoints.

  4. 4

    Copy the result together with its date format, unit, and time-zone context so it is not ambiguous later.

Calculation method

It resolves each zone through the IANA time-zone database so daylight-saving transitions are applied for the date you choose.

The browser applies calendar-aware date operations rather than treating every month as an identical number of days.

Understanding the output

converted time

When sharing a result, use an unambiguous format such as an ISO date and state the time zone whenever a clock time is involved.

Time zones and limitations

Abbreviations can shift with daylight saving, so confirm the date you are converting.

Historical, legal, payroll, financial-market, and cross-border scheduling rules can require authoritative holiday calendars or time-zone databases beyond a general browser calculation.

Practical tips for better results

  • Use the swap button to reverse the direction instantly.
  • The 24-hour chart shows the full-day mapping at a glance.
  • Write month names or use ISO YYYY-MM-DD when day/month order could be misunderstood.
  • State UTC or the named local time zone instead of using an unexplained clock time.
  • Confirm whether a duration includes the start date, end date, both, or neither.

Frequently asked questions

What is the MST to PST Time Zone Converter used for?

It converts a time in Mountain Time to Pacific Time. Common uses include scheduling calls or meetings between mountain time and pacific time regions.; planning travel, broadcasts, or deadlines across the two zones.. The supporting breakdown helps make the result easier to verify and communicate.

How are leap years and different month lengths handled?

The calculation uses calendar-aware browser dates, so February and the varying lengths of calendar months are considered. Results involving a month-end can still depend on the chosen operation and should be reviewed.

Can daylight-saving time affect the result?

Yes. A local-time interval that crosses a daylight-saving change can contain 23 or 25 clock hours even when the calendar dates are one day apart. Use UTC for elapsed technical time when appropriate.

Can I use this for payroll, legal deadlines, or official schedules?

Use it as a planning and verification aid. Official calculations may depend on jurisdiction-specific holidays, cut-off times, inclusion rules, contractual definitions, or authoritative time-zone data.

Keep working

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