Convert HST to ACST Time
Free online converter with current times, time difference, and conversion table between HST and ACST time zones.
Current time in HST: Loading...
Current time in ACST: Loading...
Time difference: +19.5 hours
HST to ACST Conversion Table
This table shows common HST times converted to ACST time:
About HST and ACST Time Zones
HST Time Zone
Full Name: Hawaii Standard Time
UTC Offset: UTC-10
Current Time: Loading...
Standard time in Hawaii.
Used in: USA (Hawaii), French Polynesia
ACST Time Zone
Full Name: Australian Central Standard Time
UTC Offset: UTC+9.5
Current Time: Loading...
Standard time in Central Australia.
Used in: Australia (SA, NT)
How to Convert HST to ACST
Enter HST Time
Enter the HST time you want to convert using the time picker or by typing directly in 24-hour format.
Click Convert
Click the "Convert Time" button to perform the conversion from HST to ACST.
View Result
The equivalent ACST time will be displayed, along with the time difference between the two zones.
Use Conversion Table
For quick reference, you can also use the conversion table below that shows common HST times converted to ACST.
Common Uses for HST to ACST Conversion
International Business
Schedule meetings and calls between locations in USA (Hawaii) and Australia (SA time zones.
Travel Planning
Calculate arrival times and plan activities when traveling between USA (Hawaii) and Australia (SA.
Event Scheduling
Convert event times for international broadcasts, webinars, or sports events between these regions.
Keeping in Touch
Find the best times to call friends, family, or colleagues across these time zones.
Frequently Asked Questions
The time difference between HST and ACST is +19.5 hours. This means that when it's noon (12:00 PM) in HST, it's 7:00 AM in ACST.
To convert HST to ACST time, add 19.5 hours to the HST time. You can use our converter at the top of this page for instant and accurate conversions.
HST does not observe DST. ACST observes DST.
Minimal overlap in business hours.
Our converter uses standard time zone offsets. For the most accurate conversions during DST transition periods, please verify the exact dates when DST begins or ends in the relevant regions, as these can vary by year and location.