GMT to PST Converter – Convert GMT to Pacific Time

PST is 8 hours behind GMT, so to convert mentally, subtract 8 hours to your GMT time. For example: 9:00 AM GMT = 1:00 AM PST. Our converter automatically adjusts for Daylight Saving Time so you always get the right result.

PST (Pacific Standard Time, UTC-8) is 8 hours behind GMT (Greenwich Mean Time, UTC+0) during standard time. For example, 9:00 AM GMT = 1:00 AM PST. During DST periods, this difference changes by 1 hour when one or both zones observe Daylight Saving Time — our converter automatically applies the correct offset for any date you select.

GMT is 8 hours behind PST, so standard 9–5 business hours do not overlap. The most practical window is late afternoon in GMT (5–7 PM), which falls in the morning in PST — for example, 5:00 PM GMT = 9:00 AM PST. Use our meeting planner to find the exact time for your date, especially around DST transitions.

Yes. GMT (Greenwich Mean Time) observes Daylight Saving Time. Clocks spring forward to BST (UTC+1) on the last Sunday in March, and fall back to GMT on the last Sunday in October. During the DST period, the difference with PST changes by 1 hour. In summer the UK switches to BST (British Summer Time, UTC+1). The GMT label itself never changes; it always means UTC+0. Our converter always uses the current offset for the date you select.

Major cities in the GMT (Greenwich Mean Time, UTC+0) timezone include: London (winter), Dublin (winter), Edinburgh, Reykjavik, Accra, Dakar. These cities switch to BST (UTC+1) from the last Sunday in March to the last Sunday in October.

Major cities in the PST (Pacific Standard Time, UTC-8) timezone include: Los Angeles, San Francisco, Seattle, Portland, Las Vegas, Vancouver. These cities switch to PDT (UTC-7) from the second Sunday in March to the first Sunday in November.

PST is 8 hours behind GMT. Because GMT and PST are 8 hours apart, there is no standard business-hour overlap — plan for one side to take an early morning or late evening call. Always include both local times in calendar invites (for example, "2:00 PM GMT / 6:00 AM PST PST"). Double-check around March and November (or March/October for European zones) when DST transitions can shift the offset by 1 hour. For full scheduling guidance, see our international meeting times guide.