Time Zone Converter — Convert Time Between Any Two Time Zones
Stop manually calculating time zone differences. The OnlineTimeZone converter uses the browser's native ICU timezone dataset to accurately convert any time between any two of the 400+ IANA time zones. Daylight Saving Time rules for all regions are applied automatically — no need to remember which countries currently observe DST or what their offset is.
Frequently Asked Questions — GMT to PST
Greenwich Mean Time (GMT) is 8 hours ahead of Pacific Standard Time (PST). For example, when it is 12:00 PM GMT, it is 4:00 AM PST.
You can convert GMT to PST instantly using our interactive time zone converter above. Simply type your time in the GMT field or drag the range slider, and the tool will automatically display the equivalent time in PST.
The best overlap hours for a meeting are between 5:00 PM and 6:00 PM GMT, which corresponds to 9:00 AM to 10:00 AM PST. This window ensures participants in both locations are awake and within reasonable hours.
Yes, both Greenwich Mean Time (GMT) and Pacific Standard Time (PST) observe Daylight Saving Time. The time difference between them shifts by 1 hour during standard/daylight saving transitions in spring and autumn.