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PST to MST Time Converter

Use this PST to MST time converter to compare US West Coast and US Mountain time instantly. MST is 1 hour ahead of PST, so 9:00 AM PST becomes 10:00 AM MST and 5:00 PM PST becomes 6:00 PM MST. The page is useful for business-hours overlap, international calls, remote-team handoffs, webinars, and travel planning, with daylight saving adjustments handled automatically.

PST Pacific Standard Time
...
MST Mountain Standard Time
...
Select a time to convert

PST to MST Quick Facts

Use this PST to MST converter to compare US West Coast and US Mountain time, check the 1 hour gap, and confirm the right slot for calls, handoffs, and deadlines. Good overlap starts around 9:00 AM PST / 10:00 AM MST.

Time Difference
Mountain Standard Time is 1 hour ahead of Pacific Standard Time
Useful when deadlines, handoffs, or calls cross workday boundaries.
Best Call Window
Best overlap starts around 9:00 AM PST and 10:00 AM MST.
Common Use Cases
Useful for remote teams, customer support windows, travel planning, webinars, and same-day deadline handoffs.

How to Convert PST to MST

Converting between Pacific Standard Time and Mountain Standard Time means accounting for a 1 hour gap — here's how to do it in under 10 seconds with no sign-up.

Enter Your PST Time

Pick the date and time in Pacific Standard Time (UTC -8) that you want to convert. Hit "Now" to load the current PST time instantly, or use "+1h" to step forward and compare.

Read the MST Result

The equivalent Mountain Standard Time (UTC -7) time appears immediately. Since MST is 1 hour ahead of PST, most daytime conversions stay on the same calendar day.

Copy or Fine-Tune

Click "Copy Time" to grab the MST result for your calendar or message. Use "+1d" to check how the conversion shifts across dates — useful when Daylight Saving Time changes the gap.

Why Choose Our PST to MST Converter

Align PST–MST Meetings Instantly

When someone in United States suggests 9:00 AM PST, that's 10:00 AM MST. This converter shows the overlap so both sides agree on one slot — no back-and-forth.

Spot Date-Line Shifts at a Glance

Late-night PST times can land on a different date in MST because of the 1 hour offset. The converter labels "next day" or "previous day" next to the result so you never send a message a day early or miss a deadline.

Handles DST Transitions Automatically

Daylight Saving adjustments can widen or narrow the PST–MST gap by an hour. During transition weeks many people get it wrong. This converter pulls the current UTC offsets automatically, so the result is right even on the changeover day.

Never Miss a PST-Timed Event

Product launches, sports matches, and webinars are often announced in PST. Convert the event time to MST so you know exactly when to tune in — with a 1 hour difference, a morning event in United States falls during work hours in United States.

PST to MST Time Conversion Chart

Quick-reference conversion table covering every hour of the day at a glance.

Complete 24-Hour Conversion

Pacific Standard Time to Mountain Standard Time full day schedule

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
11:00 AM
PST
→
12:00 PM
MST
12:00 PM
PST
→
1:00 PM
MST
1:00 PM
PST
→
2:00 PM
MST
2:00 PM
PST
→
3:00 PM
MST
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
(next day)
The two zones in context

PST vs MST — cities and working rhythm

PST — Pacific Standard Time
Primary cities: Los Angeles, San Francisco, Seattle, Vancouver, San Diego

US West Coast — home of Silicon Valley, LA entertainment, and the SaaS / VC ecosystem. Business hours 9 AM – 6 PM PT. Startup / tech culture stretches later than East Coast: it's common for calendar invites from West Coast product teams to run through 8 PM PT.

MST — Mountain Standard Time
Primary cities: Denver, Phoenix (MST year-round, no DST), Calgary, Edmonton, Salt Lake City

US Mountain — Denver, Salt Lake City, most of Arizona (Arizona notably observes no DST, so it's MST year-round while its neighbours flip). Business hours 9 AM – 5 PM MT.

Time gap: MST is 1.0 hours ahead of PST (standard-time offsets — daylight-saving flips shift this by an hour twice a year in most northern-hemisphere zones).

PST to MST FAQ

Quick answers about daylight saving time, date changes, business-hour overlap, and the most common scheduling questions between Pacific Standard Time and Mountain Standard Time.

What is the time difference between PST and MST?

MST is 1 hour ahead of PST. PST is UTC −8:00 and MST is UTC −7:00 relative to UTC. Yes, both observe daylight saving time. Because they're both on the same DST cadence (Northern Hemisphere spring-forward in March, fall-back in October/November), the PST↔MST gap stays roughly constant year-round.

When can PST and MST have business-hour overlap?

Aim for 09:00–16:00 PST, which is 10:00–17:00 MST. Both sides stay inside standard business hours.

Does PST or MST observe daylight saving time?

Yes, both observe daylight saving time. Because they're both on the same DST cadence (Northern Hemisphere spring-forward in March, fall-back in October/November), the PST↔MST gap stays roughly constant year-round.

How do I quickly convert PST to MST?

To convert PST to MST, add 1 hour to the PST time. Example: if it's 10:00 AM PST, it's 11:00 MST that day. The live converter at the top of this page handles DST automatically.

Popular PST Time Converters

Explore more PST conversions for major business and travel corridors. Each page includes a 24-hour chart, time difference summary, and meeting overlap guidance.

Convert Other Time Zones to MST

Find the time difference from any major zone into Mountain Standard Time. Use these pages when scheduling with United States from a different region.

🇺🇸 Swap direction — MST to PST Converter