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MST to HST converter

HST is 3 hours behind of MST today. MST (Mountain Standard Time) - currently UTC−7; HST (Hawaii Standard Time) - currently UTC−10.

6 hours of the workday overlap: 12 PM-6 PM MST is 9 AM-3 PM HST. Quick answers: 9 AM MST = 6 AM HST, 12 PM MST = 9 AM HST, 5 PM MST = 2 PM HST.

MST · Mountain Standard Time

UTC−7

HST · Hawaii Standard Time

UTC−10

Convert a time

HST
--:--

Working hours side by side

columns: MST hours
PING · 09–18 local MAYBE · 07–09, 18–21 NOT NOW · 21–07Outlined: everyone can be pinged

MST to HST conversion table

MSTHSTVerdict in HST
12 AM · 00:009 PM · 21:00 (previous day)NOT NOW
1 AM · 01:0010 PM · 22:00 (previous day)NOT NOW
2 AM · 02:0011 PM · 23:00 (previous day)NOT NOW
3 AM · 03:0012 AM · 00:00NOT NOW
4 AM · 04:001 AM · 01:00NOT NOW
5 AM · 05:002 AM · 02:00NOT NOW
6 AM · 06:003 AM · 03:00NOT NOW
7 AM · 07:004 AM · 04:00NOT NOW
8 AM · 08:005 AM · 05:00NOT NOW
9 AM · 09:006 AM · 06:00NOT NOW
10 AM · 10:007 AM · 07:00MAYBE
11 AM · 11:008 AM · 08:00MAYBE
12 PM · 12:009 AM · 09:00PING
1 PM · 13:0010 AM · 10:00PING
2 PM · 14:0011 AM · 11:00PING
3 PM · 15:0012 PM · 12:00PING
4 PM · 16:001 PM · 13:00PING
5 PM · 17:002 PM · 14:00PING
6 PM · 18:003 PM · 15:00PING
7 PM · 19:004 PM · 16:00PING
8 PM · 20:005 PM · 17:00PING
9 PM · 21:006 PM · 18:00MAYBE
10 PM · 22:007 PM · 19:00MAYBE
11 PM · 23:008 PM · 20:00MAYBE

Cities on MST

America/Denver
DenverEl PasoAlbuquerqueColorado SpringsSalt Lake CitySanta Fe

Cities on HST

Pacific/Honolulu
HonoluluEast HonoluluPearl CityWaiau-Pacific PalisadesMakakilo / Kapolei / Honokai HaleKalihi-Palama

Other conversions

All converters
HST → MSTMST → ESTMST → EDTMST → PSTMST → PDTMST → CSTMST → CDTMST → GMTMST → UTCMST → BSTMST → CET

Questions

What is the time difference between MST and HST?

HST (Hawaii Standard Time) is 3 hours behind of MST (Mountain Standard Time) right now: UTC−7 versus UTC−10.

What is 9 AM MST in HST?

9:00 AM MST is 6 AM HST.

What is 5 PM MST in HST?

5:00 PM MST is 2 PM HST.

Does daylight saving change the MST–HST difference?

Denver switches between MST and MDT; next change Sunday, 14 March 2027 (UTC−7 → UTC−6). HST has no daylight saving; it stays UTC−10 all year.