HST to UTC Time Converter
Hawaii Standard Time → Coordinated Universal Time
HST
UTC-10
Hawaii Standard Time
UTC
UTC+0
Coordinated Universal Time
Hawaii Standard Time (HST) is 10 hours ahead Coordinated Universal Time (UTC). When it is noon in HST, it is 10 PM in UTC. This offset is fixed year-round.
All 24 Hours — HST to UTC
Click any row to see the full detail page. Current hour in HST is highlighted.
Best Meeting Times — HST & UTC
Recommended windows where both HST and UTC participants are within working hours (8 AM–6 PM).
Tip: When scheduling between HST and UTC, aim for the “Best” windows above. These times keep both parties within normal working hours, avoiding early-morning or late-evening fatigue.
Related Time Zone Conversions
Frequently Asked Questions — HST to UTC
Hawaii Standard Time (HST) is 10 hours ahead of Coordinated Universal Time (UTC). HST is UTC-10 and UTC is UTC+0.
Live Now
HST
UTC-10
01:23:46
Saturday
UTC
UTC+0
11:23:46
Saturday
Right now, 1 AM HST = 11 AM UTC
Business Hours Quick Jump
Reverse Conversion
UTC to HST
Coordinated Universal Time → Hawaii Standard Time
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