HST to UTC Converter

Convert between any time zones worldwide. Free and accurate time zone converter with DST support.

Edit time and date on either side to see the conversion instantly.

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HST
Hawaii Standard Time
Date changes are handled automatically when conversions cross midnight.
UTC
Coordinated Universal Time
Date changes are handled automatically when conversions cross midnight.

Popular Timezone Conversions

CST to EST PST to EST MST to EST GMT to EST JST to EST GST to EST IST to EST EST to GMT

About HST to UTC Conversion

Converting time between HST and UTC requires understanding their time zone offsets and any daylight saving time adjustments. HST (HST) operates at UTC-10, while UTC (UTC) is set to UTC+0. This means UTC is 10 hours ahead HST. Note that due to the time difference, the date may change. When it's 6:36 PM HST on February 3, 2026, it's 4:36 AM UTC on February 4, 2026 in UTC. Use this converter to quickly find the equivalent time in UTC for any time in HST, whether you're scheduling meetings, planning travel, or coordinating with teams across different time zones.

How to Use the Time Zone Converter

  1. Select your source timezone from the "From timezone" dropdown (use search to find quickly)
  2. Enter the date and time you want to convert (or click "Today" and "Now" for current time)
  3. Select your target timezone from the "To timezone" dropdown
  4. The conversion updates automatically as you change inputs - no button needed!
  5. Use "Copy" button to copy the converted time, or use presets for quick conversions

More Conversions from HST

HST to EST HST to CST HST to MST HST to MDT HST to PST HST to AKST HST to GMT HST to CET HST to EET HST to MSK HST to IST HST to JST HST to CST-CHINA HST to HKT HST to SGT HST to GST HST to AEST HST to AWST HST to NZST HST to ART HST to BRT HST to PHT HST to BDT HST to KST HST to SAST HST to ICT HST to EAT HST to WAT HST to PKT

Frequently Asked Questions

What is the time difference between HST and UTC?

The time difference between HST and UTC is 10 hours. UTC is 10 hours ahead HST.

Is UTC ahead of or behind HST?

UTC is ahead of HST by 10 hours. When it's 12 PM in HST, it's 10:00 PM in UTC.

How many hours do you add to HST to get UTC?

You add 10 hours to HST to get UTC. For example, 12 PM HST + 10 hours = 10:00 PM UTC.

Does the HST to UTC time difference change during Daylight Saving Time?

No, the time difference between HST and UTC remains constant throughout the year. Neither timezone observes Daylight Saving Time, so the 10-hour difference stays the same.

What is 12 PM HST in UTC?

12 PM HST is 10:00 PM UTC. This conversion accounts for the 10-hour time difference between the two timezones.

Is HST the same throughout the year when converting to UTC?

Yes, the conversion between HST and UTC remains consistent throughout the year. Since neither timezone observes Daylight Saving Time, the 10-hour difference is constant, making conversions predictable and straightforward.

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