MST to PST Time Zone Converter
This converts US Mountain Time (Denver, Salt Lake City — locals say MT) to US Pacific Time (Los Angeles, locals say PT). Pacific is 1 hour behind Mountain, and because both zones share the same daylight saving calendar, that gap never changes all year. The converter still tracks the exact date for you.
Enter a date and time to convert.
Daylight saving is applied automatically for the date you pick. Labels like PST/EST name the zone (Pacific/Eastern); the real abbreviation shifts to PDT/EDT during daylight saving, and gmt here means London (GMT in winter, BST in summer) while utc stays fixed.
The time difference
US Pacific Time is 1 hour behind US Mountain Time, and that gap holds all year. Both zones follow the same US daylight saving calendar, so they move together and the difference never drifts. Subtract an hour from a Mountain clock and you have the Pacific time — the West Coast is always one step behind the Rockies.
A worked example
Take 9:00 AM in Denver. On January 15, 2026 that's 8:00 AM in Los Angeles. On July 15, 2026 it's still 8:00 AM — the same clock result, because the two zones spring forward and fall back on the same dates. The 1-hour gap is dependable any day of the year.
Daylight saving & the abbreviation caveat
The slug says MST and PST, the standard-time names, but both zones shift to daylight time in the warm months — MDT and PDT — which is why locals just say "MT" and "PT." US clocks spring forward on March 8, 2026 and fall back on November 1, 2026. Because both sides switch on the same dates, the gap stays a clean 1 hour through the changeovers. The converter picks the right labels for the date you choose, so the result never looks off.
When you'll use it
Reach for this when setting up a call with a Los Angeles, Seattle, or San Francisco team, timing a West Coast game or product launch, or catching a flight from Denver to the coast. Since it's just an hour, it's a common quick check before scheduling anything cross-Rockies.
Frequently asked questions
How many hours behind is Pacific Time?
Pacific is 1 hour behind Mountain, every day of the year. When it's 9:00 AM in Denver, it's 8:00 AM in Los Angeles.
Does the gap change in summer?
No. Mountain and Pacific spring forward and fall back on the same dates, so the 1-hour gap holds steady through winter and summer alike.
What about Arizona?
Arizona stays on MST year-round and doesn't spring forward, so in summer it lines up with Pacific — same clock. This converter uses standard US Mountain (Denver) rules, which stay 1 hour ahead of Pacific.