GMT to PST Converter
Category: Time Zone ConvertersGMT Time
Greenwich Mean Time (UTC+0)Pacific Time
Pacific Standard Time (UTC-8)GMT to PST Conversion Information
Time Zone Basics
Greenwich Mean Time (GMT) is the time at the Royal Observatory in Greenwich, London, and serves as the reference point for world time zones. Pacific Time in the United States alternates between PST (Pacific Standard Time) and PDT (Pacific Daylight Time) depending on the season.
Time Differences
2025 Daylight Saving Schedule
Important Notes
Convert GMT to Pacific Time
If you’ve ever tried setting up a call between London and California—or planned a flight that crosses time zones—you know how tricky the GMT and Pacific Time difference can get. That’s where this GMT to PST converter steps in. It’s fast, accurate, and smart enough to account for daylight saving shifts. Whether you're organizing meetings, coordinating travel, or just trying to keep track of loved ones across the world, this tool takes the guesswork out of the equation.
Why this tool saves more than just minutes
Pacific Time doesn’t sit still. It jumps between Standard Time and Daylight Time, depending on the season. That means the time difference from GMT isn’t fixed—it’s either 8 or 7 hours behind, depending on the time of year. This converter figures that out for you automatically, so you’re not left wondering whether to subtract 7 or 8 hours. It even tells you which mode Pacific Time is currently in, and updates live clocks for both GMT and PST/PDT so you can see the exact time right now in each zone.
How to use it - Just two steps
1. Choose your GMT date and time
Use the calendar and clock fields in the “GMT Time” section to enter the time you want to convert. The default is set to the current GMT time, but you can adjust it to any date and hour you like.
2. Hit the convert button
Click the “Convert GMT to PST” button, and the tool will instantly show the converted time in the Pacific Time zone, along with the correct date and day of the week. If daylight saving time is in effect on that date, it will account for the change and show you PDT instead of PST.
Change how the time is shown
Prefer seeing time in 24-hour format instead of AM/PM? No problem. Just click the “12 Hour” or “24 Hour” button in the bottom panel to switch between the two. The display updates immediately, including both live clocks and your converted result—no need to convert again.
Automatic updates that keep you on track
This isn’t a one-and-done converter. There are two live clocks—one showing the current GMT time and the other showing the current Pacific time. They tick in real time, right on the screen. It also checks every minute to see whether daylight saving time is active, and updates the label below the clocks to let you know if you’re looking at PST or PDT. That way, you’re always seeing the right info, even if you're just glancing.
Smart enough to handle the tricky parts
If you accidentally leave the time blank or enter something invalid, the converter won’t break—it’ll kindly ask you to enter a proper date and time. If you change the input after converting, the previous result clears out so you don’t mistake old info for new. And the tool never assumes—it calculates the daylight saving status based on the date you give it, not just what’s happening today.
Know when the clock shifts happen
Need to double-check when daylight saving time begins or ends? Scroll down to the bottom of the tool. There’s a full breakdown of the 2025 schedule, including exactly when clocks spring forward and fall back. It also gives quick examples of how much time difference to expect in both winter and summer months, and highlights which U.S. states follow Pacific Time.
Stay in sync across time zones
This converter doesn’t just change hours—it helps you stay connected, plan smarter, and avoid the awkward “Wait, what time did you mean?” moments. Whether you’re working, traveling, or catching up across continents, knowing the right time on both sides of the globe makes everything run smoother. Next time you're wondering what 3 PM GMT means for someone in California, you’ll have the answer in seconds.
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