GMT to HST Converter

HST is 10h 0m behind GMT. When it's 12:00 PM GMT, it's 2:00 AM HST.

From

GMT · UTC

4:09:48AM

Greenwich Mean Time

e.g. London

To

HST · UTC-10

6:09:48PM

Hawaii Standard Time

e.g. Honolulu

Open in World ClockHST → GMT
9:00 AM GMT=11:00 PM(−1 day) HST
12:00 PM GMT=2:00 AM HST
5:00 PM GMT=7:00 AM HST

Hourly conversion (GMT → HST)

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

Shaded rows are within standard working hours (8am–6pm) on both sides.

GMT (UTC+0) equals UTC. The UK uses BST (UTC+1) in summer.

Hawaii does not observe daylight saving time, so HST (UTC−10) applies year-round.

More GMT conversions

Frequently asked questions

What is the time difference between GMT and HST?
HST is 10h 0m behind GMT. GMT is UTC and HST is UTC-10.
What is 12:00 PM GMT in HST?
12:00 PM GMT is 2:00 AM HST.
Does GMT change for daylight saving time?
GMT (UTC+0) equals UTC. The UK uses BST (UTC+1) in summer.