MST to HST Converter

HST is 3 hours behind MST right now.

Mountain Time—MST
Hawaii Time—HST

MST to HST conversion table

Based on today's offsets (MST UTC−7, HST UTC−10). Business hours are highlighted.

MSTHST
12:00 AM9:00 PM (previous day)
1:00 AM10:00 PM (previous day)
2:00 AM11:00 PM (previous day)
3:00 AM12:00 AM
4:00 AM1:00 AM
5:00 AM2:00 AM
6:00 AM3:00 AM
7:00 AM4:00 AM
8:00 AM5:00 AM
9:00 AM6:00 AM
10:00 AM7:00 AM
11:00 AM8:00 AM
12:00 PM9:00 AM
1:00 PM10:00 AM
2:00 PM11:00 AM
3:00 PM12:00 PM
4:00 PM1:00 PM
5:00 PM2:00 PM
6:00 PM3:00 PM
7:00 PM4:00 PM
8:00 PM5:00 PM
9:00 PM6:00 PM
10:00 PM7:00 PM
11:00 PM8:00 PM

Questions

What is the time difference between MST and HST?

Right now HST is 3 hours behind MST. The gap can change by an hour when daylight saving time starts or ends, because not every zone switches on the same date (or at all).

How do I convert MST to HST?

Subtract 3 hours from the MST time. For example, 12:00 PM MST is 9:00 AM HST.

Is it MST or MDT right now?

People often say “MST” all year, but during daylight saving time (mid-March to early November in the US) the zone is on MDT. It's MST right now. The converter above uses the correct one automatically.