Convert GMT to PST
View the GMT to PST time difference, compare hours side by side, and schedule meetings with calendar-friendly tools.
How to Convert GMT to PST
Open the GMT to PST converter: Visit https://www.xconvert.com/time-converter/gmt-to-pst-converter to load a visual comparison grid with GMT and PST already set up as the main conversion pair. This page is useful when you are scheduling a call between London-based operations working on GMT and teams on the U.S. West Coast, such as software, media, or e-commerce staff in Los Angeles, San Francisco, Seattle, or Vancouver-area business hours.
Add relevant comparison cities: Click + Add City and add cities such as London, Los Angeles, and San Francisco to compare GMT against Pacific Time business centers. This is especially practical for remote product teams, customer support handoffs, and entertainment or tech companies that coordinate work between the UK and the Pacific coast, where a GMT morning often lands in the very early PST hours.
Drag to select a meeting window: Use the Select button if needed, then drag across the timeline on the GMT row to highlight a time range in purple, such as 9:00 AM to 11:00 AM GMT. That selection shows immediately as 1:00 AM to 3:00 AM PST during standard-time alignment, which confirms that a typical UK morning meeting is too early for California and that a later GMT slot is usually needed for live collaboration.
Export and share the result: After selecting a range, use the export options shown on the page: ICS download, Google Calendar, Gmail, Copy to clipboard, or Share link. For example, if you settle on a cross-border handoff time for a London agency and a California client, the ICS file lets both sides import the meeting in local time automatically, while the share link is useful for sending a quick visual reference in Slack or email.
Understanding the GMT to PST Time Difference
GMT is 8 hours ahead of PST when Pacific Standard Time is in effect. That means 9:00 AM GMT = 1:00 AM PST, 12:00 PM GMT = 4:00 AM PST, and 5:00 PM GMT = 9:00 AM PST. This large westward gap is why same-day meetings usually happen in late afternoon GMT and morning PST, rather than in the morning for both sides.
The difference changes when the Pacific zone switches to daylight saving time and becomes PDT (UTC-7), while GMT itself remains UTC+0 year-round. In the United States, daylight saving time begins on the second Sunday in March and ends on the first Sunday in November; during that period, the gap between GMT and Pacific Time becomes 7 hours, not 8. For example, in summer, 9:00 AM GMT = 2:00 AM PDT, while 5:00 PM GMT = 10:00 AM PDT.
This matters because many users search for “GMT to PST” even during months when Pacific locations are actually observing PDT. In practical terms, if you are scheduling with companies in California, Washington, Oregon, or British Columbia, you should check the date at the top of the converter grid before confirming a time, especially for meetings between March and November, when the displayed Pacific local time may be one hour later than winter expectations.
Best Times for Calls and Meetings Between GMT and PST
The most realistic overlap for standard office hours is usually 4:00 PM to 6:00 PM GMT, which converts to 8:00 AM to 10:00 AM PST during Pacific Standard Time. This window works well for sales calls, sprint planning, and agency-client check-ins because UK teams are still within the workday while West Coast teams have started the morning and can join without needing an early pre-7 AM start.
A broader but less ideal overlap is 5:00 PM to 8:00 PM GMT = 9:00 AM to 12:00 PM PST. This is often the best choice for legal reviews, executive meetings, and product demos that need decision-makers in both regions, although it pushes the GMT side into late afternoon or early evening. For distributed teams in SaaS, gaming, cloud infrastructure, and digital marketing, this is often the default collaboration block.
Earlier GMT times rarely work for live meetings with PST participants. For example, 9:00 AM GMT = 1:00 AM PST, 11:00 AM GMT = 3:00 AM PST, and even 2:00 PM GMT = 6:00 AM PST during standard time, which is too early for most teams unless the meeting is urgent or involves 24/7 operations such as incident response, broadcast coordination, or global customer support.
During U.S. daylight saving time, the overlap improves slightly because Pacific Time shifts one hour forward to PDT. In that season, 4:00 PM GMT = 9:00 AM PDT and 6:00 PM GMT = 11:00 AM PDT, making late-afternoon GMT noticeably more convenient for West Coast participants. If your organization works across both winter and summer schedules, this seasonal one-hour shift can make recurring meetings easier from mid-March through early November.
Frequently Asked Questions
What is the time difference between GMT and PST?
GMT is 8 hours ahead of PST during Pacific Standard Time. In other words, when it is 12:00 PM noon in GMT, it is 4:00 AM in PST. This is the standard winter relationship used for places such as California and Washington before the Pacific zone moves into daylight saving time.
When is 9 AM GMT in PST?
9:00 AM GMT is 1:00 AM PST during standard time. That conversion shows why early UK business hours are usually not suitable for live meetings with teams on the U.S. West Coast, since Pacific participants would need to join in the middle of the night.
Does the difference between GMT and PST change during DST?
Yes, the difference changes when Pacific Time observes daylight saving time. From the second Sunday in March to the first Sunday in November, Pacific locations use PDT (UTC-7), so GMT is only 7 hours ahead instead of 8. This means a meeting that converts to 9:00 AM PST in winter may convert to 10:00 AM PDT in summer on the same GMT schedule.
What is the best meeting time between GMT and PST?
The best meeting window is usually 4:00 PM to 6:00 PM GMT, which equals 8:00 AM to 10:00 AM PST in standard time. This range gives GMT participants a late-afternoon slot and PST participants a normal morning start, making it practical for recurring team syncs, client calls, and project reviews.
Why does my GMT to PST conversion look different in summer?
It usually looks different because many Pacific locations are not actually on PST in summer; they are on PDT. If you choose a date in June, July, or August, the converter may show Pacific local time one hour later than winter because the U.S. West Coast is observing daylight saving time while GMT remains fixed at UTC+0.
Is GMT the same as UK time all year?
No, GMT is not the same as local UK clock time all year. The UK uses GMT in winter but switches to British Summer Time (BST, UTC+1) from the last Sunday in March to the last Sunday in October. If you are coordinating with London specifically, that seasonal UK change can also affect your meeting calculations beyond the GMT baseline.
How can I schedule a recurring call between GMT and Pacific Time without confusion?
Use the date picker on the converter page to check both a winter date and a summer date before you finalize the recurring slot. This is important because a meeting that works at 5:00 PM GMT = 9:00 AM PST in January will appear as 10:00 AM PDT in July, which may shift lunch breaks, school drop-offs, or team standup schedules for West Coast participants.