From
Mountain Time
Denver
Time Zone Converter
MST to HST Time Zone Converter
Convert MST to HST with a live clock, current time difference, UTC offsets, and work-hour overlap. HST is 4 hours behind MST.
To
Hawaii Time
Honolulu
When it is 7:30 AM in Mountain Time, it is 3:30 AM in Hawaii Time.
MST to HST at a glance
Hawaii Time is 4 hours behind Mountain Time. If someone gives you a time in Mountain Time, move the clock by 4 hours to read it in Hawaii Time. A 9:00 AM start in Denver becomes 5:00 AM in Honolulu.
What Mountain Time covers
Mountain Time is used across the US and Canada in cities such as Denver and Calgary. It is useful when you work with logistics, field teams, or regional teams across the western half of North America.
What Hawaii Time covers
Hawaii Time is used in Honolulu and the rest of Hawaii. It does not switch for daylight saving time. It is helpful when your team works with travel, hospitality, or customers in the Pacific.
Quick answers
What is the time difference between MST and HST?
Hawaii Time is 4 hours behind Mountain Time.
What happens to a 3:00 PM meeting in MST?
It lands at 11:00 AM in HST.
Does daylight saving time matter for MST to HST?
Mountain Time and Hawaii Time are shown using the offsets that are active right now, so the result already reflects any daylight saving change in effect today.