PST to MST Converter

Pacific Standard Time → Mountain Standard Time · PST is 1 hour behind MST

PST
—
MST
—

PST and MST are the same time

PST to MST Conversion Table

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

Green rows = business hours overlap (9:00 AM – 6:00 PM PST)

Major PST Cities
  • Los Angeles, CA
  • San Francisco, CA
  • Seattle, WA
  • Portland, OR
  • Las Vegas, NV
  • San Diego, CA
Major MST Cities
  • Denver, CO
  • Salt Lake City, UT
  • Albuquerque, NM
  • Boise, ID
  • El Paso, TX
  • Tucson, AZ
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PST vs MST — What You Need to Know

PST (Pacific Standard Time) is UTC-8, covering California, Washington, Oregon, and Nevada. During DST it becomes PDT (UTC-7).

MST (Mountain Standard Time) is UTC-7, covering Colorado, Utah, Montana, Wyoming, and New Mexico. During DST it becomes MDT (UTC-6).

The 1-hour difference is constant. A 10:00 AM MST standup in Denver is 9:00 AM PST in San Francisco — one of the easier US cross-timezone gaps to bridge.

Frequently Asked Questions

How many hours is PST behind MST?

PST (Pacific Standard Time, UTC-8) is 1 hour behind MST (Mountain Standard Time, UTC-7). When it is 10:00 AM MST in Denver, it is 9:00 AM PST in Los Angeles. Both zones observe DST on the same dates, keeping the 1-hour gap constant year-round.

When it is 9 AM PST, what time is it MST?

When it is 9:00 AM PST, it is 10:00 AM MST. PST is always 1 hour behind MST.

What is the time difference between Los Angeles and Denver?

Denver (Mountain Time) is 1 hour ahead of Los Angeles (Pacific Time) year-round. Both cities shift clocks simultaneously for DST, maintaining the constant 1-hour difference.