From
Hawaii Time
Honolulu
Time Zone Converter
HST to UTC Time Zone Converter
Convert HST to UTC with a live clock, current time difference, UTC offsets, and work-hour overlap. UTC is 10 hours ahead of HST.
To
UTC
London
When it is 7:30 AM in Hawaii Time, it is 5:30 PM in UTC.
HST to UTC at a glance
UTC is 10 hours ahead of Hawaii Time. If someone gives you a time in Hawaii Time, move the clock by 10 hours to read it in UTC. A 9:00 AM start in Honolulu becomes 7:00 PM in London.
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.
What UTC covers
UTC is the global reference clock used to compare time zones around the world. It does not change for daylight saving time. It is the safest format for international schedules, APIs, databases, and server logs.
Quick answers
What is the time difference between HST and UTC?
UTC is 10 hours ahead of Hawaii Time.
What happens to a 3:00 PM meeting in HST?
It lands at 1:00 AM in UTC.
Does daylight saving time matter for HST to UTC?
Hawaii Time and UTC are shown using the offsets that are active right now, so the result already reflects any daylight saving change in effect today.