MST to PST: Convert Mountain Time to Pacific Time

PST is 1 hour behind MST all year. Convert any time below, or use the full MST to PST conversion table.

Mountain Time (MST/MDT)
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Pacific Time (PST/PDT)
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Quick answer

PST is 1 hour behind MST all year. So 12:00 PM MDT = 11:00 AM PDT. (Mountain Time is on MDT and Pacific Time is on PDT for daylight saving time right now.)

MST to PST conversion table

MST / MDTPST / PDT
12:00 AM11:00 PM −1 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

MST and PST difference through 2027

The gap between the two zones on each date range, including daylight saving time changes:

DatesMountain TimePacific TimeDifference
Sep 30, 2026 – Oct 31, 2026MDT (UTC−6)PDT (UTC−7)PST 1 hour behind
Nov 1, 2026 – Mar 13, 2027MST (UTC−7)PST (UTC−8)PST 1 hour behind
Mar 14, 2027 – Nov 6, 2027MDT (UTC−6)PDT (UTC−7)PST 1 hour behind
Nov 7, 2027 – Dec 31, 2027MST (UTC−7)PST (UTC−8)PST 1 hour behind

Best time to meet or call

  • Working hours (9 AM–5 PM) overlap from 10:00 AM–5:00 PM MST (9:00 AM–4:00 PM PST), about 7 hours.

About Mountain Time (MST)

Mountain Time uses MST (UTC−7) in winter and MDT (UTC−6) in summer. Most of Arizona stays on MST all year and does not change its clocks. It's used in Denver, Salt Lake City, Albuquerque, Boise, El Paso and Calgary.

About Pacific Time (PST)

Pacific Time uses PST (UTC−8) in winter and PDT (UTC−7) during daylight saving time. It's used in Los Angeles, San Francisco, San Diego, Seattle, Portland, Las Vegas and Vancouver.

Frequently asked questions

What time is 12 PM MST in PST?

12:00 PM MDT is 11:00 AM PDT.

How many hours ahead or behind is PST from MST?

PST is 1 hour behind MST, all year.

Does MST change for daylight saving time?

Yes. Mountain Time uses MST (UTC−7) in winter and MDT (UTC−6) in summer. Most of Arizona stays on MST all year and does not change its clocks.

Does PST change for daylight saving time?

Yes. Pacific Time uses PST (UTC−8) in winter and PDT (UTC−7) during daylight saving time.

What is the best time for a call between MST and PST?

Right now, working hours overlap from 10:00 AM–5:00 PM MST (9:00 AM–4:00 PM PST), about 7 hours.

Is it MST or MDT right now?

Mountain Time uses MST in winter and MDT from the second Sunday in March to the first Sunday in November. The live clock on this page shows which one applies today.

More time zone conversions

Sources

Reviewed by Gurmej Singh, Founder, Divy Digital Hub · Last reviewed: Wednesday, September 30, 2026. All calculations run in your browser. Editorial policy.