HST to MDT 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.
MST
Mountain Standard 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 MDT Conversion

Converting time between HST and MST requires understanding their time zone offsets and any daylight saving time adjustments. HST (HST) operates at UTC-10, while MST (MDT) is set to UTC-7. This means MST is 3 hours ahead HST. For example, when it's 5:18 PM HST on February 3, 2026, it's 8:18 PM MDT in MST. America/Denver observes daylight saving time, switching between MST (UTC-7) and MDT (UTC-6), while Pacific/Honolulu does not observe daylight saving time. Use this converter to quickly find the equivalent time in MST 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 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 UTC 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 MDT?

The time difference between HST and MDT is 3 hours. MDT is 3 hours ahead HST.

Is MDT ahead of or behind HST?

MDT is ahead of HST by 3 hours. When it's 8 AM in HST, it's 11:00 AM in MDT.

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

You add 3 hours to HST to get MDT. For example, 8 AM HST + 3 hours = 11:00 AM MDT.

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

Yes, the time difference can change during Daylight Saving Time (DST). MDT observes DST, which can affect the time difference during the transition periods in spring and fall.

What is 8 AM HST in MDT?

8 AM HST is 11:00 AM MDT. This conversion accounts for the 3-hour time difference between the two timezones.

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

No, the conversion between HST and MDT can vary during the year due to Daylight Saving Time. The time difference may change by 1 hour during DST transition periods (typically March and November), so always use a current timezone converter for accurate conversions.

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