JST to BST Time Converter
Use this JST to BST time converter to compare Japan and United Kingdom time instantly. BST is 8 hours behind JST, so 9:00 AM JST becomes 1:00 AM BST and 5:00 PM JST becomes 9:00 AM BST. The page is useful for business-hours overlap, international calls, remote-team handoffs, webinars, and travel planning, with daylight saving adjustments handled automatically.
JST to BST Quick Facts
Use this JST to BST converter to compare Japan and United Kingdom time, check the 8 hours gap, and confirm the right slot for calls, handoffs, and deadlines. Good overlap starts around 5:00 PM JST / 9:00 AM BST.
How to Convert JST to BST
Converting between Japan Standard Time and British Summer Time means accounting for a 8 hours gap — here's how to do it in under 10 seconds with no sign-up.
Pick the date and time in Japan Standard Time (UTC +9) that you want to convert. Hit "Now" to load the current JST time instantly, or use "+1h" to step forward and compare.
The equivalent British Summer Time (UTC +1) time appears immediately. Since BST is 8 hours behind of JST, most daytime conversions stay on the same calendar day.
Click "Copy Time" to grab the BST result for your calendar or message. Use "+1d" to check how the conversion shifts across dates — helpful for scheduling recurring Japan–United Kingdom calls.
Why Choose Our JST to BST Converter
When someone in Japan suggests 5:00 PM JST, that's 9:00 AM BST. This converter shows the overlap so both sides agree on one slot — no back-and-forth.
Late-night JST times can land on a different date in BST because of the 8 hours offset. The converter labels "next day" or "previous day" next to the result so you never send a message a day early or miss a deadline.
Daylight Saving adjustments can widen or narrow the JST–BST gap by an hour. During transition weeks many people get it wrong. This converter pulls the current UTC offsets automatically, so the result is right even on the changeover day.
Product launches, sports matches, and webinars are often announced in JST. Convert the event time to BST so you know exactly when to tune in — with a 8 hours difference, a morning event in Japan hits the evening in United Kingdom.
JST to BST Time Conversion Chart
Quick-reference conversion table covering every hour of the day at a glance.
Japan Standard Time to British Summer Time full day schedule
| Japan Standard Time | British Summer Time |
|---|---|
| 12:00 AM |
4:00 PM
(previous day)
|
| 1:00 AM |
5:00 PM
(previous day)
|
| 2:00 AM |
6:00 PM
(previous day)
|
| 3:00 AM |
7:00 PM
(previous day)
|
| 4:00 AM |
8:00 PM
(previous day)
|
| 5:00 AM |
9:00 PM
(previous day)
|
| 6:00 AM |
10:00 PM
(previous day)
|
| 7:00 AM |
11:00 PM
(previous day)
|
| 8:00 AM |
12:00 AM
|
| 9:00 AM |
1:00 AM
|
| 10:00 AM |
2:00 AM
|
| 11:00 AM |
3:00 AM
|
| 12:00 PM |
4:00 AM
|
| 1:00 PM |
5:00 AM
|
| 2:00 PM |
6:00 AM
|
| 3:00 PM |
7:00 AM
|
| 4:00 PM |
8:00 AM
|
| 5:00 PM |
9:00 AM
|
| 6:00 PM |
10:00 AM
|
| 7:00 PM |
11:00 AM
|
| 8:00 PM |
12:00 PM
|
| 9:00 PM |
1:00 PM
|
| 10:00 PM |
2:00 PM
|
| 11:00 PM |
3:00 PM
|
Popular JST Time Converters
Explore more JST conversions for major business and travel corridors. Each page includes a 24-hour chart, time difference summary, and meeting overlap guidance.
Convert Other Time Zones to BST
Find the time difference from any major zone into British Summer Time. Use these pages when scheduling with United Kingdom from a different region.