Convert PST to GMT
Compare Pacific Standard Time and Greenwich Mean Time with a live conversion table, meeting planner, and export options.
How PST to GMT Works
Convert Pacific Standard Time (UTC-8) to Greenwich Mean Time (UTC+0) using the 8-hour difference. The converter updates automatically for selected dates and times.
Hour-by-Hour Conversion Table
Scan a visual hour-by-hour table to compare PST and GMT across the day. Export selected times with ICS download or send them to Google Calendar and Gmail.
Schedule Meetings Across Zones
Find suitable meeting times between Pacific Standard Time and Greenwich Mean Time with side-by-side scheduling tools. DST changes and historical timezone rules are tracked automatically using the IANA timezone database.
PST (Pacific Standard Time, UTC-8) converts to GMT (Greenwich Mean Time, UTC+0) with GMT 8 hours ahead of PST.
Looking for Pitcairn Standard Time? See /time-converter/pst-pitcairn-time-zone.
How to Convert PST to GMT
Open the PST to GMT converter: Visit https://www.xconvert.com/time-converter/pst-to-gmt-converter when you need to line up Pacific Standard Time with Greenwich Mean Time for a client call, a UK-based project review, or a handoff between West Coast teams and partners in London. The page opens with Pacific Standard Time and Greenwich Mean Time arranged in a visual comparison grid, so you can immediately see how an 8-hour gap affects the business day.
Add comparison cities if your schedule involves more than two regions: Click + Add City and search for places that commonly work alongside Pacific Standard Time and Greenwich Mean Time, such as Los Angeles or Vancouver for North American operations and London or Dublin for teams working on Greenwich Mean Time schedules. This is especially useful for industries like software, media, consulting, and logistics, where a meeting may need to work for a California team, a UK stakeholder, and a shared services group in another office.
Drag across the grid to compare a realistic meeting window: Click Select, then drag across the Pacific Standard Time row to highlight a block such as 9:00 to 12:00 PST, which maps to 17:00 to 20:00 GMT on the Greenwich Mean Time row. You can also test a later slot like 15:00 PST = 23:00 GMT or 18:00 PST = 2:00 GMT (next day), which quickly shows why late Pacific Standard Time meetings usually push into late evening or the next day for Greenwich Mean Time participants.
Export the selected time range for your team: After selecting a range, use the export options for ICS download, Google Calendar, Gmail, Copy to clipboard, or Share link to send the agreed slot to everyone involved. That works well when a remote team in the western United States needs a calendar hold that UK colleagues can open in their own local calendar without manually rechecking the conversion.
Understanding the PST to GMT Time Difference
Pacific Standard Time is UTC-8 and Greenwich Mean Time is UTC+0, so GMT is 8 hours ahead of PST and PST is 8 hours behind GMT. In practical terms, when the workday starts in Pacific Standard Time, the day is already well underway in Greenwich Mean Time, which matters for same-day approvals, customer support coverage, and cross-border meetings.
The fixed examples make the relationship easy to apply: 9:00 PST = 17:00 GMT, 12:00 PST = 20:00 GMT, 15:00 PST = 23:00 GMT, and 18:00 PST = 2:00 GMT (next day). These examples show that a standard Pacific Standard Time morning reaches Greenwich Mean Time in the late afternoon and evening, while Pacific Standard Time evening hours move into the next calendar day on the Greenwich Mean Time side.
Daylight saving time changes the naming and the gap because Pacific Standard Time is a standard-time abbreviation whose daylight counterpart is PDT, and Greenwich Mean Time is a standard-time abbreviation whose daylight counterpart is BST. That means the PST to GMT relationship applies specifically when both sides are on their standard-time designations; during daylight saving periods, the abbreviations change, so users planning meetings across different months need to confirm whether they are actually scheduling in Pacific Standard Time and Greenwich Mean Time or in PDT and BST instead.
Pacific Standard Time is used in Canada, Mexico, and the United States, while Greenwich Mean Time is used across a wide set of countries and territories including the United Kingdom, Ireland, Iceland, Ghana, Senegal, Sierra Leone, Liberia, Mali, Guinea, Guinea-Bissau, Gambia, Togo, Mauritania, Burkina Faso, Sao Tome and Principe, Saint Helena, Guernsey, Jersey, and the Isle of Man. That broad GMT footprint makes this conversion relevant not only for UK business calls but also for shipping, nonprofit coordination, government work, and media schedules spanning North America, West Africa, and Atlantic territories.
Best Times for Calls and Meetings Between PST and GMT
Pacific Standard Time and Greenwich Mean Time have a workable overlap, but it is weighted toward Pacific Standard Time mornings and Greenwich Mean Time late afternoons to early evenings. The clearest examples are 9:00 PST = 17:00 GMT and 12:00 PST = 20:00 GMT, which place a Pacific Standard Time morning or midday meeting into a same-day slot that is still usable for many Greenwich Mean Time participants.
For most business calls, the most practical shared window is the span covered by those examples: 9:00 to 12:00 PST corresponds to 17:00 to 20:00 GMT. This is often suitable for software standups with West Coast engineering teams and UK product managers, legal or finance reviews between California and London, or customer meetings where a North American team needs to connect with partners operating on Greenwich Mean Time.
Later Pacific Standard Time meetings quickly become difficult for Greenwich Mean Time attendees. 15:00 PST = 23:00 GMT, which is already late night, and 18:00 PST = 2:00 GMT (next day), which moves the meeting into the next day entirely for the Greenwich Mean Time side; those slots are usually better reserved for urgent production issues, overnight operations, or deadline-driven coordination rather than routine recurring meetings.
If you are trying to protect normal office hours on both sides, start by testing a Pacific Standard Time morning block on the grid and avoid late-afternoon Pacific Standard Time selections unless the Greenwich Mean Time side specifically supports evening coverage. This matters in industries such as cloud operations, e-commerce support, international consulting, and media distribution, where teams often need a same-day response without forcing one region into midnight scheduling.
Frequently Asked Questions
What is the time difference between PST and GMT?
Pacific Standard Time is UTC-8 and Greenwich Mean Time is UTC+0, so GMT is 8 hours ahead of PST. That means if a team in California is working through the morning in Pacific Standard Time, colleagues on Greenwich Mean Time are already in the late afternoon or evening of the same day.
When is 9 AM PST in GMT?
9:00 PST = 17:00 GMT. This is one of the most useful conversion points for scheduling because it places a Pacific Standard Time morning meeting into a late-afternoon Greenwich Mean Time slot that still works for many office-based teams.
Does the difference between PST and GMT change during DST?
The PST to GMT difference applies when both abbreviations are being used in their standard-time form. Pacific Standard Time changes to PDT during its daylight saving period, and Greenwich Mean Time changes to BST during its daylight saving period, so the abbreviations and scheduling context change during those months even though this page is specifically about Pacific Standard Time and Greenwich Mean Time.
What is the best meeting time between PST and GMT?
A strong working window is 9:00 to 12:00 PST, which corresponds to 17:00 to 20:00 GMT. This range is often the best compromise for recurring meetings because it keeps Pacific Standard Time participants within standard business hours while giving Greenwich Mean Time participants a same-day late-afternoon or early-evening slot.
Why do late PST meetings become difficult for GMT participants?
The later the meeting starts in Pacific Standard Time, the more it pushes into night hours in Greenwich Mean Time. For example, 15:00 PST = 23:00 GMT and 18:00 PST = 2:00 GMT (next day), so a normal late-afternoon meeting on the US West Coast can become a very late or overnight event for someone working on Greenwich Mean Time.
Which countries use PST and GMT?
Pacific Standard Time is used in Canada, Mexico, and the United States. Greenwich Mean Time is used in Burkina Faso, Gambia, Ghana, Guernsey, Guinea, Guinea-Bissau, Iceland, Ireland, Isle of Man, Ivory Coast, Jersey, Liberia, Mali, Mauritania, Saint Helena, Sao Tome and Principe, Senegal, Sierra Leone, Togo, and the United Kingdom, which is why this conversion is relevant for both transatlantic business and broader international coordination.
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 version, use /time-converter/pst-pitcairn-time-zone to avoid mixing the two meanings when scheduling.