Convert BST to KST
Compare British Summer Time and Korea Standard Time with a live time difference table, meeting planner, and calendar export tools.
How BST to KST Works
British Summer Time is UTC+1 and Korea Standard Time is UTC+9, so KST is 8 hours ahead. This converter applies the correct offset automatically and reflects seasonal changes in the UK.
Hour-by-Hour Time Table
Use the visual grid to compare BST and KST across each hour of the day. Scan overlapping business hours quickly, then export selected times as ICS files or add them to Google Calendar and Gmail.
Schedule Meetings Accurately
Plan calls between the UK and South Korea with automatic DST tracking and historical timezone updates. Conversion data follows the IANA timezone database to keep times accurate as rules change.
How to Convert BST to KST
BST (British Summer Time, UTC+1) converts to KST (Korea Standard Time, UTC+9) with KST 8 hours ahead of BST.
Looking for Bangladesh Standard Time? See /time-converter/bst-bangladesh-time-zone.
Looking for Bougainville Standard Time? See /time-converter/bst-bougainville-time-zone.
Open the BST to KST converter: Go to
https://www.xconvert.com/time-converter/bst-to-kst-converterto open a comparison grid with British Summer Time already set against Korea Standard Time. This layout is useful when you are scheduling a supplier call with Seoul, coordinating a game launch with a Korean publishing partner, or planning support coverage between the United Kingdom and South Korea.Add comparison cities: Click + Add City and search for additional locations that matter to your schedule, such as London for UK business hours or Seoul for South Korean office timing. This is especially helpful for industries like e-commerce, electronics, gaming, and media, where teams in the United Kingdom often coordinate with partners or clients in South Korea.
Select a working window on the grid: Click Select, then drag across the colored timeline to highlight a BST range in purple; for example, drag from 9:00 BST to 12:00 BST to see the matching 17:00 KST to 20:00 KST window. That visual comparison quickly shows that a late-morning meeting in British Summer Time lands in the early evening in Korea Standard Time, which can work for sales calls, project reviews, or same-day handoffs.
Export and share the result: After selecting a range, use the export options for ICS download, Google Calendar, Gmail, Copy to clipboard, or Share link. This is practical when you need to send a confirmed BST-to-KST meeting slot to a distributed team so everyone receives the event in their own local calendar without manually converting times.
Understanding the BST to KST Time Difference
British Summer Time is 8 hours behind Korea Standard Time, and Korea Standard Time is 8 hours ahead of British Summer Time. In practical terms, when it is 9:00 BST, it is 17:00 KST; when it is 12:00 BST, it is 20:00 KST; when it is 15:00 BST, it is 23:00 KST; and when it is 18:00 BST, it is 2:00 KST the next day.
British Summer Time is a daylight saving time abbreviation, and its standard counterpart is GMT. Korea Standard Time does not observe daylight saving time, so the BST-to-KST relationship applies specifically while the United Kingdom and related Crown Dependencies are on British Summer Time; outside that period, the difference changes because BST is seasonal while KST stays fixed year-round.
This converter is specifically relevant for the countries that use these time zones. British Summer Time is used in Guernsey, Isle of Man, Jersey, and the United Kingdom, while Korea Standard Time is used in North Korea and South Korea, making the page useful for cross-border scheduling involving UK-based firms, Korean clients, logistics teams, and remote employees.
Best Times for Calls and Meetings Between BST and KST
British Summer Time morning hours line up best with Korea Standard Time late afternoon and evening. The clearest examples are 9:00 BST = 17:00 KST and 12:00 BST = 20:00 KST, which means a UK morning meeting can still fit into a same-day Korean work or early evening schedule.
A 9:00 BST to 12:00 BST window is often the most practical range for live collaboration. That span becomes 17:00 KST to 20:00 KST, which is suitable for project check-ins, vendor coordination, publishing approvals, and customer meetings where the UK side wants a normal morning slot and the Korea side can join before the day gets too late.
Later British Summer Time afternoon meetings become difficult for standard office coordination in Korea. For example, 15:00 BST = 23:00 KST, and 18:00 BST = 2:00 KST the next day, so those times are usually better reserved for urgent production incidents, overnight operations, or globally distributed teams that already work outside standard business hours.
If you are trying to build a recurring meeting, the most sustainable pattern is usually to anchor it in the British Summer Time morning rather than the afternoon. That reduces the chance of pushing Korean participants into late-night attendance and is especially useful for weekly account reviews, engineering syncs, and cross-border planning sessions.
Frequently Asked Questions
What is the time difference between BST and KST?
British Summer Time is 8 hours behind Korea Standard Time, and Korea Standard Time is 8 hours ahead of British Summer Time. This means a working hour in the UK shifts into late afternoon or evening in Korea, which is why UK morning meetings are usually the easiest option for both sides.
When is 9 AM BST in KST?
9:00 BST = 17:00 KST. This conversion is useful for scheduling business calls, remote team standups, or partner updates because it places a UK morning meeting into the Korean late afternoon, which is still practical for same-day communication.
Does the BST to KST difference change during daylight saving time?
Yes, because British Summer Time is a daylight saving time abbreviation and its standard counterpart is GMT. Korea Standard Time does not observe DST, so the BST-to-KST difference applies during the British Summer Time period, and the relationship changes in months when the UK is not on BST.
What is the best meeting time between BST and KST?
The most workable overlap is usually during the British Summer Time morning, because that maps to late afternoon and evening in Korea Standard Time. For example, 9:00 BST to 12:00 BST becomes 17:00 KST to 20:00 KST, which is often suitable for client calls, operations reviews, and cross-border project updates.
When is 12 PM BST in KST?
12:00 BST = 20:00 KST. This is often close to the end of the Korean business day or early evening, so it can work for scheduled meetings, but it is less flexible than earlier BST times if participants in South Korea need to stay within standard office hours.
When is 3 PM BST in KST?
15:00 BST = 23:00 KST. That makes a mid-afternoon meeting in British Summer Time a late-night meeting in Korea Standard Time, which is usually not ideal unless the discussion is urgent or the Korean team already supports evening operations.
When is 6 PM BST in KST?
18:00 BST = 2:00 KST the next day. Because the date rolls over in Korea Standard Time, this timing is generally unsuitable for normal business meetings and is more relevant for emergency coordination, overnight support, or time-sensitive production issues.
Is BST British Summer Time or Bangladesh Standard Time?
On this page, BST means British Summer Time (UTC+1). BST can also mean Bangladesh Standard Time (UTC+6), which is covered separately at /time-converter/bst-bangladesh-time-zone, and it can also refer to Bougainville Standard Time on its own dedicated page.