From
GMT
London
Time Zone Converter
GMT to JST Time Zone Converter
Convert GMT to JST with a live clock, current time difference, UTC offsets, and work-hour overlap. JST is 8 hours ahead of GMT.
To
Japan Time
Tokyo
When it is 7:30 AM in GMT, it is 3:30 PM in Japan Time.
GMT to JST at a glance
Japan Time is 8 hours ahead of GMT. If someone gives you a time in GMT, move the clock by 8 hours to read it in Japan Time. A 9:00 AM start in London becomes 5:00 PM in Tokyo.
What GMT covers
GMT is commonly used as the United Kingdom time reference. In summer, the UK moves to British Summer Time. It is a familiar baseline for Europe, Africa, and global remote teams.
What Japan Time covers
Japan Time is used throughout Japan. Tokyo follows it year-round without daylight saving changes. It is helpful for manufacturing, gaming, and business coordination with Japan-based teams.
Quick answers
What is the time difference between GMT and JST?
Japan Time is 8 hours ahead of GMT.
What happens to a 3:00 PM meeting in GMT?
It lands at 11:00 PM in JST.
Does daylight saving time matter for GMT to JST?
GMT and Japan Time are shown using the offsets that are active right now, so the result already reflects any daylight saving change in effect today.