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HST to UTC converter
Hawaii Time
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Coordinated Universal Time
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Coordinated Universal Time is always 10 hours ahead of Hawaii Time.
When does the difference change?
The difference stays the same all year: UTC is 10 hours ahead of HST.
Questions
What time is 9 AM HST in UTC?
9 AM Hawaii Time is 7 PM Coordinated Universal Time.
How many hours ahead or behind is UTC from HST?
Coordinated Universal Time is always 10 hours ahead of Hawaii Time.
Does the HST to UTC difference change?
No, it stays the same all year.
About these time zones
HST to UTC, hour by hour
| Hawaii Time | Coordinated Universal Time |
|---|---|
| 12 AM | 10 AM |
| 1 AM | 11 AM |
| 2 AM | 12 PM |
| 3 AM | 1 PM |
| 4 AM | 2 PM |
| 5 AM | 3 PM |
| 6 AM | 4 PM |
| 7 AM | 5 PM |
| 8 AM | 6 PM |
| 9 AM | 7 PM |
| 10 AM | 8 PM |
| 11 AM | 9 PM |
| 12 PM | 10 PM |
| 1 PM | 11 PM |
| 2 PM | 12 AM (next day) |
| 3 PM | 1 AM (next day) |
| 4 PM | 2 AM (next day) |
| 5 PM | 3 AM (next day) |
| 6 PM | 4 AM (next day) |
| 7 PM | 5 AM (next day) |
| 8 PM | 6 AM (next day) |
| 9 PM | 7 AM (next day) |
| 10 PM | 8 AM (next day) |
| 11 PM | 9 AM (next day) |
Based on the clocks on Monday, October 12, 2026. Use the converter above for another date.