MST to HST Time Converter - Live World Clock
Convert time between Mountain Standard Time (MST) and Hawaii Standard Time (HST). See current time with live clocks.
United States (MST)
1
2
3
4
5
6
7
8
9
10
11
12
11:27:45 AM
Thursday, August 20, 2026
United States (HST)
1
2
3
4
5
6
7
8
9
10
11
12
07:27:45 AM
Thursday, August 20, 2026
Current Time Difference
MST is 3 hours ahead of HST
What is MST (Mountain Standard Time)?
Mountain Standard Time (MST) used in western North America, UTC-7:00.
Countries and Regions Using MST
Primary Country:
- United States
- States: Colorado, Arizona, Utah, New Mexico
Also Used By:
- Canada - Alberta
- Mexico
Key Facts about MST:
- ✓ Arizona doesn't observe DST
- ✓ Major mountain resort areas
- ✓ Growing tech hub in Denver
- ✓ Major Cities: Denver, Phoenix, Albuquerque, Salt Lake City
- ✓ UTC Offset: -7:00 (-6:00 during MDT)
What is HST (Hawaii Standard Time)?
Hawaii Standard Time (HST) used in Hawaii, UTC-10:00. No DST observed.
Countries and Regions Using HST
Primary Country:
- United States
- States: Hawaii
Key Facts about HST:
- ✓ No Daylight Saving Time
- ✓ Major tourism destination
- ✓ Pacific island timezone
- ✓ Major Cities: Honolulu, Pearl City, Hilo
- ✓ UTC Offset: -10:00
MST to HST Time Difference
Standard Time Difference:
MST is 3 hours ahead
Common Use Cases:
- • Business meetings between United States and United States
- • International collaboration across timezones
- • Scheduling calls and conferences
Frequently Asked Questions
Which countries are in MST time zone?
United States is the primary country using MST (-7:00). Other countries include: Canada, Mexico.
Which countries are in HST time zone?
United States is the primary country using HST (-10:00).
How many hours is MST ahead of HST?
MST is 3 hours ahead of HST.
Does United States observe Daylight Saving Time?
Yes, United States observes Daylight Saving Time. During DST, MST changes to MDT (Mountain Daylight Time) with UTC offset of -6:00.