PST to GMT Time Zone Converter
PST to GMT converts US Pacific Time to London time. London is normally 8 hours ahead of the West Coast, and because both places observe daylight saving, that gap holds steady for most of the year. The converter handles the switch automatically — including the couple of weeks each spring and fall when the US and Europe haven't both changed yet.
Enter a date and time to convert.
Daylight saving is applied automatically for the date you pick. Labels like PST/EST name the zone (Pacific/Eastern); the real abbreviation shifts to PDT/EDT during daylight saving, and gmt here means London (GMT in winter, BST in summer) while utc stays fixed.
The time difference
London is 8 hours ahead of US Pacific Time for most of the year. Both sides observe daylight saving, so the gap mostly stays steady rather than drifting. The catch is that the US and Europe switch on different dates — the US in early March and November, Europe in late March and late October. During the roughly two-week windows in between (March 8–29 and October 25–November 1 in 2026), the usual 8-hour gap is briefly off by an hour until both sides have changed.
A worked example
Take 9:00 AM Pacific. On January 15, 2026 that's 5:00 PM in London, and on July 15, 2026 it's again 5:00 PM in London. Both fall in aligned periods, so the standard 8-hour gap gives the same clock result — 5 PM either way.
Daylight saving & the abbreviation caveat
The slug says GMT, but London is only truly on GMT in winter; from late March to late October it's on BST, British Summer Time. On the Pacific side, PST is the winter name and PDT the summer one, so locals just say "PT." The 8-hour gap you see most of the year comes from both sides moving together — it only wobbles during those short mismatch windows. The converter sorts all of this out for the exact date you choose.
When you'll use it
Great for scheduling a call between the West Coast and a London office, catching a UK match kickoff or live broadcast, timing a flight to Heathrow, or coordinating with clients and friends in Britain without doing the math each time.
Frequently asked questions
How many hours ahead is London from Pacific Time?
London is 8 hours ahead of Pacific Time for most of the year. When it's 9:00 AM in Los Angeles, it's 5:00 PM in London. During two short windows in spring and fall the gap is briefly 7 or 9 hours.
Is London on GMT all year?
No. London is on GMT in winter and BST — British Summer Time — from late March to late October. The converter uses whichever applies to the date you pick, so you don't have to track it.
What is 9 AM Pacific in London?
5:00 PM London time — both in winter and in summer for the standard dates. The usual gap is 8 hours.