GMT to PST Converter (Greenwich Mean Time to Pacific Time)

Mid-January 2026: PST is 8 hours behind GMT. Mid-July 2026: PDT is 7 hours behind GMT.

Subtract eight hours from a GMT reading to get Pacific Standard Time, the clock of Los Angeles, San Francisco, Seattle and Portland in winter. From the second Sunday of March to the first Sunday of November, those cities are on Pacific Daylight Time (UTC−07:00), and the subtraction is seven hours. GMT is fixed, so the whole change comes from the American side.

The conversion matters when a release, a stream or a deadline is announced in GMT or UTC and you live on the West Coast, or when you are writing for an international audience and want the Pacific reading to be right. The gap is large enough that the calendar date often differs.

How to use this tool

1. Pick a date and time in GMT. The date matters when daylight saving time is in force.
2. Read the matching time in PST, with both UTC offsets.
3. Use "Use current time" for now, or the tables below for a quick look.

Formula

PST time = GMT time − (GMT UTC offset) + (PST UTC offset)

The converter looks up both UTC offsets for the actual instant in the saved IANA time zone rules, so daylight saving changes are included automatically.

Example

Worked with the saved rules:

9:00 AM GMT on March 2, 2026 = 1:00 AM PST

6:30 PM GMT on August 3, 2026 = 11:30 AM PDT

Time difference through the year

The difference depends on the date when either place moves its clocks. These are the offsets on two reference days, from the saved IANA rules:

Clock changes in 2026

Between these dates the difference shifts by the size of the change.

GMT to PST time table

Each hour in Greenwich Mean Time with the matching Pacific Time time in winter and summer (reference days in January and July).

PST to GMT time table

Each hour in Pacific Time with the matching Greenwich Mean Time time in winter and summer (reference days in January and July).

Hours that work in both places

Hours (on the January reference day) that fall between 8:00 AM and 8:00 PM in both GMT and PST:

Check the summer column above when one of the places is on daylight saving time.

When the date is different

Between midnight and 8 a.m. GMT in winter (7 a.m. in summer), the Pacific clock is still on the previous date. A game patch published at 03:00 GMT on a Friday arrives at 7 p.m. on Thursday in California in winter, so it appears on a Thursday calendar in the US.

The same logic works in the other direction, since 4:00 p.m. on a Pacific winter day is midnight GMT, the end of that calendar day for anyone reading UTC-based statistics.

Software releases and live streams

Many technology companies publish their release schedules in UTC or GMT because customers are worldwide. Local readers on Pacific time can convert once and subscribe to a calendar rather than checking every announcement.

Vancouver and the rest of British Columbia mostly follow Pacific time too, so the same conversion applies north of the border. Arizona stays on Mountain Standard Time and is not part of this pair.