Convert GMT to PST
See the time difference between Greenwich Mean Time and Pacific Standard Time with a live converter, hourly table, and scheduling tools.
How GMT Converts to PST
Greenwich Mean Time is UTC+0 and Pacific Standard Time is UTC-8, so PST is 8 hours behind GMT. This converter updates automatically for the selected date and reflects timezone rule changes.
Hour-by-Hour Time Table
Use the visual grid to compare GMT and PST across each hour of the day. Review side-by-side times, then export events with ICS download or send them to Google Calendar and Gmail.
Schedule Meetings Across Zones
Find suitable meeting times between Greenwich Mean Time and Pacific Standard Time without manual math. DST transitions and historical offset changes are tracked automatically using the IANA timezone database.
How to Convert GMT to PST
Greenwich Mean Time (GMT, UTC+0) to PST (Pacific Standard Time, UTC-8) is a common conversion for UK–US West Coast calls, media scheduling, and remote team coordination. Looking for Pitcairn Standard Time? See /time-converter/pst-pitcairn-time-zone.
Open the GMT to PST converter: Go to https://www.xconvert.com/time-converter/gmt-to-pst-converter to load a visual comparison grid with Greenwich Mean Time and Pacific Standard Time already aligned on a 24-hour timeline. This view is useful when you need to schedule a call from the United Kingdom to California, coordinate support coverage between Europe and North America, or compare broadcast times for audiences in both regions.
Add comparison cities if your schedule involves more regions: Click + Add City and search for places that commonly work alongside Pacific Standard Time and Greenwich Mean Time, such as London for UK business hours, Los Angeles for West Coast media and tech teams, or Vancouver for Canada-based operations. This helps if you are planning meetings across industries like software, film production, logistics, or customer support, where one team may work in GMT while another follows Pacific Standard Time.
Drag to select a meeting window on the grid: Click Select, then drag across the GMT row to highlight a time range in purple; for example, drag around 9:00 GMT to see 1:00 PST, or extend the selection to compare 12:00 GMT = 4:00 PST, 15:00 GMT = 7:00 PST, and 18:00 GMT = 10:00 PST. The colored slots make it easy to spot whether you are landing in green work-hour blocks or pushing someone into yellow evening hours, which matters when arranging standups, client reviews, or handoffs between London and the US West Coast.
Export and share the selected time range: Once a range is selected, use the export options for ICS download, Google Calendar, Gmail, Copy to clipboard, or Share link. This is especially practical when a distributed team needs the same meeting block added to their calendars automatically, or when you want to send a client a confirmed GMT-to-Pacific Standard Time slot without rewriting the conversion manually.
Understanding the GMT to PST Time Difference
Pacific Standard Time (Pacific Standard Time, UTC-8) is 8 hours behind Greenwich Mean Time (GMT, UTC+0). Put another way, GMT is 8 hours ahead of Pacific Standard Time, so a morning time in GMT lands much earlier in Pacific Standard Time: 9:00 GMT = 1:00 PST, 12:00 GMT = 4:00 PST, 15:00 GMT = 7:00 PST, and 18:00 GMT = 10:00 PST.
This converter page is specifically for standard time to standard time: GMT and Pacific Standard Time. GMT is a standard-time abbreviation, and its daylight-saving counterpart is BST; Pacific Standard Time is also a standard-time abbreviation, and its daylight-saving counterpart is PDT. During the parts of the year when the United Kingdom uses BST or the US West Coast uses PDT, the GMT-to-Pacific Standard Time relationship on this page no longer represents the seasonal daylight schedule, so the difference changes during DST months.
GMT is used across countries including the United Kingdom, Ireland, Iceland, Ghana, Senegal, Sierra Leone, Liberia, Mali, Mauritania, Guinea, Guinea-Bissau, Gambia, Burkina Faso, Togo, Ivory Coast, Sao Tome and Principe, Saint Helena, Guernsey, Jersey, and the Isle of Man. Pacific Standard Time is used in parts of Canada, Mexico, and the United States, which is why this conversion appears often in North American trade, software collaboration, entertainment releases, and transatlantic support operations.
Best Times for Calls and Meetings Between GMT and PST
Pacific Standard Time (Pacific Standard Time, UTC-8) works best with GMT when the GMT side schedules in the afternoon rather than the early morning. The example conversions show why: 9:00 GMT = 1:00 PST and 12:00 GMT = 4:00 PST, both of which are very early on the Pacific Standard Time side, while 15:00 GMT = 7:00 PST and 18:00 GMT = 10:00 PST move into a more practical West Coast morning.
For real business use, that means many GMT–Pacific Standard Time meetings are easiest when the GMT participant is willing to meet later in the day. A London-based manager, UK agency, or operations team can often reach California, Vancouver, Seattle, San Francisco, or Los Angeles contacts more comfortably once GMT reaches the mid-to-late afternoon window represented by 15:00 GMT and 18:00 GMT.
This matters in industries with regular transatlantic coordination. Technology companies often need engineering or product meetings between UK teams and West Coast offices; media teams may align release schedules between London and Los Angeles; and ecommerce or customer support teams may use the overlap to hand off tickets from Europe to North America. Using the grid’s green, yellow, and gray bands helps you avoid setting a meeting that looks fine in GMT but lands in pre-work hours or late evening for the Pacific Standard Time side.
Frequently Asked Questions
What is the time difference between GMT and PST?
Pacific Standard Time (Pacific Standard Time, UTC-8) is 8 hours behind Greenwich Mean Time (GMT, UTC+0). That means if your office runs on GMT and your colleague is on Pacific Standard Time, the GMT clock is always eight hours ahead on this standard-time comparison page.
When is 9 AM GMT in PST?
9:00 GMT = 1:00 PST. This is an early-hour conversion that often matters for teams in the United Kingdom trying to reach the US West Coast, because a 9 AM GMT start lands at 1 AM in Pacific Standard Time and is usually unsuitable for live meetings.
Does the difference between GMT and PST change during DST?
Yes, the difference changes during daylight saving periods because GMT switches to BST in places that observe UK summer time, and Pacific Standard Time switches to PDT in regions that observe Pacific daylight time. This page covers the standard-time pairing only, so it is most accurate when you specifically need GMT and Pacific Standard Time, not their daylight counterparts.
What is the best meeting time between GMT and PST?
The most workable meeting windows usually come later in the GMT day, because the Pacific Standard Time side starts eight hours earlier on the clock. The examples show that 15:00 GMT = 7:00 PST and 18:00 GMT = 10:00 PST, so late afternoon GMT is generally more practical for West Coast business calls than early GMT morning slots like 9:00 GMT = 1:00 PST.
Which countries use GMT and Pacific Standard Time?
GMT is used in countries and territories including the United Kingdom, Ireland, Iceland, Ghana, Senegal, Sierra Leone, Liberia, Mali, Mauritania, Guinea, Guinea-Bissau, Gambia, Burkina Faso, Togo, Ivory Coast, Sao Tome and Principe, Saint Helena, Guernsey, Jersey, and the Isle of Man. Pacific Standard Time is used in parts of Canada, Mexico, and the United States, making this conversion especially relevant for transatlantic business and travel planning.
Is PST Pacific Standard Time or Pitcairn Standard Time?
On this page, PST means Pacific Standard Time (UTC-8). PST can also mean Pitcairn Standard Time (UTC-8), and if you need that meaning, use /time-converter/pst-pitcairn-time-zone to avoid mixing the two pages.
How do I quickly convert GMT to Pacific Standard Time for a work call?
A fast way to do it is to anchor from the examples already shown on the grid: 9:00 GMT = 1:00 PST, 12:00 GMT = 4:00 PST, 15:00 GMT = 7:00 PST, and 18:00 GMT = 10:00 PST. In the converter, you can drag a purple selection across the GMT row and immediately see where that same block lands in Pacific Standard Time, which is useful for sales calls, engineering standups, and cross-border client meetings.