Convert CET to JST
See the CET to JST time difference, use the hour-by-hour table, and schedule meetings across Central Europe and Japan.
How to Convert CET to JST
Open the CET to JST converter: Go to https://www.xconvert.com/time-converter/cet-to-jst-converter. The page is built for comparing Central European Time and Japan Standard Time on a visual 24-hour grid, which is useful when you are scheduling a supplier call with Tokyo, coordinating a release with a Japan-based engineering team, or checking whether a Frankfurt-to-Tokyo handoff can happen during business hours.
Add comparison cities relevant to your work: Click “+ Add City” and search for cities such as Berlin, Paris, or Tokyo if you want city-based labels alongside the CET and JST rows. This is especially practical for automotive, electronics, logistics, and finance teams, since many European companies work from Germany or France while Japanese operations are concentrated around Tokyo, Osaka, and Nagoya.
Drag to select the meeting window on the grid: Use the “Select” button if needed, then drag across the CET row to highlight a time range in purple; for example, drag from 9:00 AM to 11:00 AM CET and the JST row will show 5:00 PM to 7:00 PM JST on the same day. That visual comparison quickly confirms whether a European morning meeting fits Japanese office hours, which is often ideal for sales reviews, manufacturing updates, or end-of-day approvals in Japan.
Export and share the selected time: After selecting a range, use the export options shown on the page: ICS download, Google Calendar, Gmail, Copy to clipboard, or Share link. This is helpful when you need to send a confirmed CET/JST meeting slot to a distributed team so colleagues in Europe and Japan see the correct local time automatically in their calendars and email invites.
Understanding the CET to JST Time Difference
CET is UTC+1, and JST is UTC+9, so JST is normally 8 hours ahead of CET. That means when it is 9:00 AM CET, it is 5:00 PM JST on the same calendar day. This fixed winter relationship is the standard comparison people use for Germany, France, Italy, Spain, and other Central European locations when coordinating with Japan.
The difference changes when Central Europe switches to Central European Summer Time (CEST, UTC+2), while Japan does not observe daylight saving time. During the European DST period, the gap becomes 7 hours instead of 8. In practice, 9:00 AM in Central Europe during summer is 4:00 PM in Japan, not 5:00 PM.
In most of Europe, daylight saving time starts on the last Sunday in March and ends on the last Sunday in October. For 2025, clocks move forward on 30 March 2025 and move back on 26 October 2025. So from late March through late October, many users searching for “CET to JST” are actually dealing with a CEST to JST difference of 7 hours, even if they casually still say “CET.”
This matters for real scheduling decisions. A standing call set for 10:00 AM Central Europe in February reaches Japan at 6:00 PM JST, but the same nominal local meeting time in July lands at 5:00 PM JST because Europe is on summer time. For remote teams in software, manufacturing procurement, gaming, and international trade, that one-hour seasonal shift can be the difference between a meeting ending inside or outside Japanese office hours.
Best Times for Calls and Meetings Between CET and JST
The most practical overlap between standard CET business hours and JST business hours is usually 9:00 AM to 11:00 AM CET = 5:00 PM to 7:00 PM JST. This is one of the few windows where both sides are still within or close to normal office time, making it suitable for project check-ins, account management calls, and cross-border operations updates.
If you need a slightly earlier Japanese slot, 8:00 AM CET = 4:00 PM JST and 10:00 AM CET = 6:00 PM JST. That makes 8:00 AM to 10:00 AM CET a strong option for teams that want Japan to stay comfortably within the late afternoon rather than pushing into the evening. It is commonly used for European headquarters speaking with Tokyo colleagues before Japan’s workday ends.
During European summer time, the overlap shifts earlier because Central Europe moves one hour ahead. In that period, 9:00 AM to 11:00 AM CEST = 4:00 PM to 6:00 PM JST, which is often even better for recurring meetings. Companies with teams in Berlin, Amsterdam, Milan, or Paris and partners in Tokyo often prefer this summer window because it avoids late-evening attendance in Japan.
Meetings after 12:00 PM CET become difficult for Japan because 12:00 PM CET = 8:00 PM JST in winter, and even later slots can run into personal time. On the other side, very early Japan morning meetings are also hard for Europe: 9:00 AM JST = 1:00 AM CET in winter. For that reason, CET-JST coordination usually works best when Europe meets in the morning and Japan joins in the late afternoon or early evening.
For specific use cases, a 9:30 AM CET / 5:30 PM JST slot works well for weekly status meetings, while 8:00 AM CET / 4:00 PM JST is better for longer workshops or technical reviews. If the meeting includes additional regions such as London or New York, the CET-JST overlap may still work for Europe and Japan but often becomes too early or too late for North America, so the visual grid is particularly useful for spotting trade-offs before sending invites.
Frequently Asked Questions
What is the time difference between CET and JST?
JST is 8 hours ahead of CET when Central Europe is on standard time. Since CET = UTC+1 and JST = UTC+9, the math is straightforward in winter: add 8 hours to convert CET to JST. However, when Central Europe switches to summer time, the practical difference becomes 7 hours because Europe moves to UTC+2.
When is 9 AM CET in JST?
9:00 AM CET is 5:00 PM JST on the same day. This is one of the most commonly used conversion points because it falls inside a realistic meeting window for Europe and near the end of the business day in Japan. During European summer time, 9:00 AM in Central Europe becomes 4:00 PM JST instead.
Does the CET to JST difference change during daylight saving time?
Yes, the difference changes because Japan does not use daylight saving time, but most CET-region countries do. In winter, the gap is 8 hours, and from the last Sunday in March to the last Sunday in October, the gap is usually 7 hours because Central Europe is then on CEST. For 2025, that DST period runs from 30 March 2025 to 26 October 2025.
What is the best meeting time between CET and JST?
The best regular meeting window is usually 9:00 AM to 11:00 AM CET, which corresponds to 5:00 PM to 7:00 PM JST in winter. This gives Europe a morning slot and Japan a late-afternoon to early-evening slot, which is often manageable for business teams. In summer, the equivalent overlap improves slightly to 9:00 AM to 11:00 AM CEST = 4:00 PM to 6:00 PM JST.
How do I convert CET to JST quickly on https://www.xconvert.com?
Open the CET to JST page and use the visual comparison grid rather than typing times manually. Add any extra city rows you need, then drag across the CET timeline to highlight a meeting range and immediately see the corresponding JST hours. Once the purple selection looks right, you can export it through ICS, Google Calendar, Gmail, Copy to clipboard, or Share link for fast team coordination.
Is Japan always ahead of Central Europe?
Yes, Japan is always ahead of Central Europe, but the exact lead depends on the season. Japan is 8 hours ahead of CET in winter and 7 hours ahead of CEST in summer. That means Tokyo is never behind Berlin, Paris, or Rome; the only question is whether the lead is 7 or 8 hours.
Why do some CET to JST conversions seem off by one hour?
This usually happens because people say “CET” year-round even when Central Europe is actually observing CEST. If you calculate using UTC+1 during July, August, or September, your result will be one hour late for most of Europe. Always check whether the date falls between the last Sunday in March and the last Sunday in October before confirming an international meeting with Japan.
Is there any overlap between normal office hours in CET and JST?
Yes, but it is limited and usually favors European mornings and Japanese late afternoons. In winter, 9:00 AM to 11:00 AM CET = 5:00 PM to 7:00 PM JST, which is the most practical overlap for many teams. Outside that range, one side usually ends up meeting very early in the morning or late in the evening, which is harder for recurring calls.