PST to MST Converter
MST is 1 hour ahead of PST. 9:00 AM PST = 10:00 AM MST.
MST is 1 hour ahead of PST. To convert PST to MST, add 1 hour to the PST time: 9:00 AM PST = 10:00 AM MST.
PST (Pacific Time) is used in Los Angeles, San Francisco, Seattle, Las Vegas, Portland, Vancouver. MST (Mountain Time) is used in Denver, Salt Lake City, Albuquerque, Calgary, Edmonton; Phoenix (Arizona) all year.
PST here means Pacific Standard Time, not Philippine Standard Time. Most of Arizona uses MST all year and does not switch to MDT.
PST to MST time conversion table
PST to MST on 6 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| PST | MST | Day |
|---|---|---|
| 12:00 AM PST | 1:00 AM MST | night |
| 1:00 AM PST | 2:00 AM MST | night |
| 2:00 AM PST | 3:00 AM MST | night |
| 3:00 AM PST | 4:00 AM MST | night |
| 4:00 AM PST | 5:00 AM MST | night |
| 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 | work hours |
| 10:00 AM PST | 11:00 AM MST | work hours |
| 11:00 AM PST | 12:00 PM MST | work hours |
| 12:00 PM PST | 1:00 PM MST | work hours |
| 1:00 PM PST | 2:00 PM MST | work hours |
| 2:00 PM PST | 3:00 PM MST | work hours |
| 3:00 PM PST | 4:00 PM MST | work hours |
| 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 | night |
| 10:00 PM PST | 11:00 PM MST | night |
| 11:00 PM PST | 12:00 AM MST | next day |
- Work rows — 9 AM–5 PM in both places
- Night in the destination (10 PM–6 AM)
How to convert PST to MST
Add 1 hour to the PST time to get MST.
Example: 9:00 AM PST = 10:00 AM MST.
Across midnight: 11:00 PM PST = 12:00 AM MST (next day). The date changes, so always check the day as well as the hour.
Time difference between PST and MST
The time difference between PST and MST is 1 hour all year – MST is ahead of PST.
PST and MST during daylight saving time
- PST next changes on 14 Mar 2027: clocks go forward one hour at 01:59 local time, from PST (UTC−8) to PDT (UTC−7).
- MST next changes on 14 Mar 2027: clocks go forward one hour at 01:59 local time, from MST (UTC−7) to MDT (UTC−6).
Best time for a meeting between PST and MST
PST and MST share 7 hours of the 9 AM–5 PM working day. Any time between 9:00 AM and 4:00 PM PST lands between 10:00 AM and 5:00 PM MST, inside working hours for both.
PST to MST FAQ
What is the time difference between PST and MST?
MST is 1 hour ahead of PST all year. 9:00 AM PST = 10:00 AM MST.
What is 9 AM PST in MST?
9:00 AM PST is 10:00 AM MST.
What is 12 PM (noon) PST in MST?
12:00 PM PST is 1:00 PM MST.
Is MST ahead of or behind PST?
MST is 1 hour ahead of PST, so it is later in MST than in PST.
Does PST change for daylight saving time?
Yes. PST next changes on 14 Mar 2027, when clocks go forward one hour from PST to PDT.
Does MST change for daylight saving time?
Yes. MST next changes on 14 Mar 2027, when clocks go forward one hour from MST to MDT.
What is the best time for a meeting between PST and MST?
PST and MST share 7 hours of the 9 AM–5 PM working day. Any time between 9:00 AM and 4:00 PM PST lands between 10:00 AM and 5:00 PM MST, inside working hours for both.
Is PT the same as PST?
PST is the winter (standard) name of Pacific Time (PT). From March to November the same clocks are called PDT. This converter always uses the one in force on the date you choose.
Is MT the same as MST?
MST is the winter (standard) name of Mountain Time (MT). From March to November the same clocks are called MDT. This converter always uses the one in force on the date you choose.
Related conversions
Convert MST to PST
Convert PST to other time zones
Convert other time zones to MST
Learn more
Updated 6 November 2026. Time zone data: IANA tz database.