BST to HST Time Zone Converter — Greenwich to Hawaii

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

Edit time or date on either side — all cards update instantly.

From

UTC...

Greenwich Mean Time

To Same day

UTC...

Hawaii Standard Time

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Upcoming clock change (daylight saving)

From (Greenwich Mean Time): Next DST change: October 25, 2026 — BST shifts to GMT (UTC+0)

BST to HST Conversion Chart

Last updated: April 2026

Today's reference — every 3 hours. DST is applied automatically.

BST Time	HST Time
12:00 AM	1:00 PM (-1 day)
3:00 AM	4:00 PM (-1 day)
6:00 AM	7:00 PM (-1 day)
9:00 AM	10:00 PM (-1 day)
12:00 PM	1:00 AM
3:00 PM	4:00 AM
6:00 PM	7:00 AM
9:00 PM	10:00 AM

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 BST to HST Conversion

Last updated: April 2026

Converting time between GMT and HST requires understanding their time zone offsets and any daylight saving time adjustments. GMT (BST) operates at UTC+1, while HST (HST) is set to UTC-10. This means HST is 11 hours behind GMT. For example, when it's 1:33 PM BST on May 1, 2026, it's 2:33 AM HST in HST. Europe/London observes daylight saving time, switching between GMT (UTC+0) and BST (UTC+1), while Pacific/Honolulu does not observe daylight saving time. Use this converter to quickly find the equivalent time in HST for any time in GMT, whether you're scheduling meetings, planning travel, or coordinating with teams across different time zones.

How to Use the Time Zone Converter

Last updated: April 2026

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

More Conversions from BST

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

Frequently Asked Questions

Last updated: April 2026

What is the time difference between BST and HST?

The time difference between BST and HST is 11 hours. HST is 11 hours behind BST.

Is HST ahead of or behind BST?

HST is behind BST by 11 hours. When it's 9 AM in BST, it's 10:00 PM in HST.

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

You subtract 11 hours from BST to get HST. For example, 9 AM BST - 11 hours = 10:00 PM HST.

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

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

What is 9 AM BST in HST?

9 AM BST is 10:00 PM HST. This conversion accounts for the 11-hour time difference between the two timezones.

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

No, the conversion between BST and HST 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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