Convert PST to BST
See the current PST to BST time difference, compare hours side by side, and schedule meetings with calendar-friendly tools.
How to Convert PST to BST
Open the PST to BST converter: Go to https://www.xconvert.com/time-converter/pst-to-bst-converter. The page loads with PST and BST already set up in the comparison grid, which is useful if you are scheduling a client call between California and the UK or coordinating a product launch between a West Coast engineering team and a London operations team.
Add comparison cities if your workflow spans more than two regions: Click + Add City and search for cities such as Los Angeles, London, and New York if you need to compare US West Coast, UK, and East Coast business hours for software, media, or finance teams. This is especially helpful for companies that run customer support from the US while sales or partnerships are handled from London during UK office hours.
Drag to select the meeting window on the grid: Use the Select button if needed, then drag across the PST row to highlight a time range in purple, such as 9 AM to 11 AM PST. The BST row will immediately show the matching time as 5 PM to 7 PM BST, helping you confirm whether a late-afternoon UK meeting still fits normal office hours while staying in the morning for teams in Seattle, San Francisco, or Vancouver.
Export and share the confirmed time: After selecting the range, use the export options for ICS download, Google Calendar, Gmail, Copy to clipboard, or Share link. For example, a distributed team can send the ICS file to UK and US attendees so the event appears in each person’s local calendar automatically, while the share link is useful for quickly confirming a handoff window in Slack or email.
Understanding the PST to BST Time Difference
PST is normally 8 hours behind BST. When it is 9:00 AM PST, it is 5:00 PM BST on the same day. This fixed relationship applies during the part of the year when the US Pacific zone is on Pacific Standard Time (UTC-8) and the UK is on British Summer Time (UTC+1).
The difference does not stay the same all year because both regions observe daylight saving time on different schedules. The US Pacific time zone switches to daylight saving earlier in spring and returns later in autumn, while the UK changes on a different set of dates. Because of that mismatch, the gap between the US West Coast and the UK can temporarily become 7 hours instead of 8 hours.
For the UK, BST runs from the last Sunday in March to the last Sunday in October. In 2025, BST begins on 30 March 2025 and ends on 26 October 2025, when the UK moves from UTC+1 back to GMT (UTC+0). In the US Pacific zone, daylight saving time begins on the second Sunday in March and ends on the first Sunday in November; in 2025, those dates are 9 March 2025 and 2 November 2025.
That means the PST-to-BST page is most relevant during the UK summer period, but users should still watch the transition weeks carefully. From 9 March to 29 March 2025, the Pacific zone is already on daylight time while the UK has not yet moved to BST, so the difference is 7 hours. From 26 October to 1 November 2025, the UK has returned to GMT while the US West Coast is still on daylight time, so the difference is again 7 hours before shifting back after the US autumn change.
This matters in real business settings because London is a major hub for banking, legal services, advertising, and international sales, while the US Pacific region includes large technology and entertainment centers such as San Francisco, Seattle, Los Angeles, San Diego, and Silicon Valley. A team booking recurring calls across these markets needs to account for the March and October transition windows so a standing meeting does not suddenly move by an hour for one side.
Best Times for Calls and Meetings Between PST and BST
The most practical overlap between standard PST working hours and BST working hours is narrow because BST is 8 hours ahead. If a California team works roughly 8:00 AM to 5:00 PM PST and a London team works 9:00 AM to 6:00 PM BST, the strongest overlap is usually 9:00 AM to 10:00 AM PST = 5:00 PM to 6:00 PM BST. That hour often works for end-of-day UK check-ins and morning US status meetings.
An earlier US start can create a slightly better collaboration window. For example, 8:00 AM to 10:00 AM PST = 4:00 PM to 6:00 PM BST, which is often suitable for project reviews, agency calls, SaaS customer demos, and legal or procurement discussions that involve both London and the US West Coast. This is common in industries where UK commercial teams need to speak with product or engineering staff based in California.
If the UK side can start earlier or the US side can begin before normal office hours, you can expand the overlap. 7:00 AM to 9:00 AM PST = 3:00 PM to 5:00 PM BST is often one of the best windows for recurring weekly meetings because it lands comfortably inside the UK afternoon and still avoids very early evening. This timing is useful for transatlantic account management, venture capital updates, and media coordination between Los Angeles and London.
Late PST afternoons are generally poor for live meetings with BST because they push into the UK night. For example, 1:00 PM PST = 9:00 PM BST and 3:00 PM PST = 11:00 PM BST, which is usually too late for normal office collaboration unless you are handling urgent production issues, overnight trading support, or live event coverage. If your teams need more than a one-hour overlap, asynchronous handoffs through email, shared docs, or recorded updates may be more efficient than trying to force long live meetings.
During the weeks when the time difference temporarily becomes 7 hours, the overlap improves slightly. In those periods, 9:00 AM Pacific = 4:00 PM UK instead of 5:00 PM, making it easier to schedule a 60- to 90-minute meeting without pushing London too far past the end of the workday. This is one reason many remote teams review recurring calendar invites in March and late October.
Frequently Asked Questions
What is the time difference between PST and BST?
PST is 8 hours behind BST during the period when the Pacific zone is on UTC-8 and the UK is on UTC+1. In practical terms, when it is 9:00 AM PST, it is 5:00 PM BST. However, because US and UK daylight saving rules do not change on the same dates, the gap can temporarily become 7 hours during parts of March and late October.
When is 9 AM PST in BST?
9:00 AM PST is 5:00 PM BST on the same calendar day. This is one of the most commonly searched conversions because it sits near the edge of the shared workday: it is still a normal morning start for teams in California, while it lands in late afternoon for London-based staff.
Does the difference between PST and BST change during daylight saving time?
Yes, the difference changes because the US Pacific region and the UK switch clocks on different dates. In 2025, the US changes on 9 March and 2 November, while the UK changes on 30 March and 26 October. As a result, the PST/BST-style relationship is effectively 8 hours for much of the UK summer period, but the real Pacific-to-UK gap becomes 7 hours during the transition windows in March and late October.
What is the best meeting time between PST and BST?
For most teams, the best meeting window is 8:00 AM to 10:00 AM PST, which corresponds to 4:00 PM to 6:00 PM BST. If you want the least disruption on both sides, 9:00 AM PST = 5:00 PM BST is often the sweet spot for short standups, executive check-ins, and customer calls involving London and the US West Coast.
Is BST the same as GMT when converting from PST?
No, BST and GMT are not the same. BST is British Summer Time (UTC+1) and applies during the UK daylight saving period, while GMT is Greenwich Mean Time (UTC+0) and applies during the UK winter period. If you confuse BST with GMT, your meeting can be off by one hour, which is a common issue when scheduling transatlantic calls in spring and autumn.
Why is scheduling between the US West Coast and the UK difficult?
The challenge comes from the large time gap and the limited overlap in standard business hours. London is typically already in late afternoon when California starts its workday, so teams often have only one to three usable hours for live collaboration. This affects software releases, ad campaign approvals, legal reviews, and customer escalations where both sides need to be available at the same time.
How can I use the converter to plan recurring PST to BST meetings?
On the converter page, use the visual grid to drag across a likely PST meeting slot, then compare how it appears in the BST row for the same date. Check dates around late March and late October carefully, because recurring meetings can shift by an hour during DST transition periods. Once you find a stable window, export it as ICS, send it through Google Calendar or Gmail, or copy the share link so everyone sees the agreed slot clearly.