Tokyo
London
Convert JST to BST
Japan Standard Time to British Summer Time — London is 8 hours behind Tokyo
Quick Facts
Time Difference
-8 hours
JST Full Name
Japan Standard Time
BST Full Name
British Summer Time
JST to BST Conversion Table
Related Conversions
About JST and BST Time Zones
JST (Japan Standard Time) is UTC+9 and covers cities like Tokyo, Osaka, Kyoto. BST (British Summer Time) is UTC+1 and covers cities like London, Edinburgh, Cardiff.
When it's 12:00 PM (noon) in Tokyo (JST), it's 4:00 AM in London (BST). The time difference between JST and BST is 8 hours — London is behind Tokyo.
The 8-hour difference makes real-time overlap challenging — early morning calls (7–9 AM JST) work best.
Use our world clock tool to compare Tokyo and London with a visual timeline, or browse more timezone conversions.
Frequently Asked Questions
What is the time difference between JST and BST?
London (BST) is 8 hours behind Tokyo (JST). The offset is -8 hours.
Is BST ahead or behind JST?
BST is 8 hours behind JST. JST is UTC+9 and BST is UTC+1.
When it's 12:00 PM in Tokyo, what time is it in London?
When it's 12:00 PM (noon) in Tokyo (JST), it's 4:00 AM in London (BST).
When it's 5:00 PM in Tokyo, what time is it in London?
When it's 5:00 PM in Tokyo (JST), it's 9:00 AM in London (BST).