JST to CET Converter

Category: Time Zone Converters

- June 27, 2025

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Japan Standard Time (JST)

UTC+9 • Tokyo, Osaka, Yokohama

Conversion Settings

Configure your timezone conversion preferences

Auto Convert

Daylight Saving Aware

Show UTC Offset

Show Seconds

Central European Time (CET)

UTC+1/+2 • Berlin, Paris, Madrid, Rome

--:--:--

Select a time to convert

Time Difference: --

UTC Offset (JST): +09:00

UTC Offset (CET): +01:00

DST Status: --

JST Time: --

CET Time: --

Time Format:

Current JST: --:--:--

Current CET: --:--:--

🇯🇵 JST never observes daylight saving time and is always UTC+9. CET observes daylight saving time from late March to late October (becomes CEST, UTC+2).

JST to CET Conversion Guide

What is JST to CET Conversion?

JST to CET conversion helps you translate time between Japan Standard Time and Central European Time zones. JST is always UTC+9 and never changes for daylight saving time. CET is UTC+1 in winter and UTC+2 in summer (CEST). The time difference varies between 7-8 hours depending on whether Central Europe is observing daylight saving time.

Time Zone Information

Japan Standard Time (JST): Used throughout Japan including Tokyo, Osaka, Yokohama, and Sapporo. Always UTC+9 with no daylight saving time adjustments ever implemented.

Central European Time (CET): Used across most of continental Europe including Germany, France, Italy, Spain, and many others. UTC+1 in winter, UTC+2 in summer (CEST).

Time Difference: JST is 8 hours ahead of CET (winter) and 7 hours ahead of CEST (summer). The difference changes twice a year with DST transitions.

Daylight Saving Time Impact

Japan: Never observes daylight saving time - JST remains UTC+9 throughout the year

Central Europe: Observes CEST (UTC+2) from last Sunday in March to last Sunday in October

Variable Difference: The time difference changes from 8 hours (winter) to 7 hours (summer)

Common Conversion Examples

Winter Time (CET)

JST 9:00 AM → CET 1:00 AM

JST 5:00 PM → CET 9:00 AM

8-hour difference in winter months

Summer Time (CEST)

JST 9:00 AM → CEST 2:00 AM

JST 5:00 PM → CEST 10:00 AM

7-hour difference in summer months

Business Hours

Best JST Time: 4:00 PM - 6:00 PM

Converts to CET: 8:00 AM - 10:00 AM

Optimal for European morning meetings

Travel Planning

JST Morning: 6:00 AM

CET Evening: 10:00 PM (previous day)

Consider date changes when scheduling

Conversion Tips & Best Practices

• Remember that the time difference changes twice a year due to European daylight saving time

• CET becomes CEST from the last Sunday in March to the last Sunday in October

• Business hours have limited overlap - late afternoon JST works best for European mornings

• CET covers most of continental Europe including major business centers

• Always double-check the current DST status when scheduling important meetings

• Consider using UTC as a reference point for complex multi-timezone scheduling

Convert Between JST and CET

Whether you're planning meetings, booking flights, or simply trying to catch a friend online, the JST–CET Time Converter makes it easy to figure out exactly what time it is across two major regions. With just a few clicks, you’ll know the correct time in Japan and Central Europe, including whether daylight saving time plays a role. No calculators or mental math required.

Why This Tool Might Save You From a Scheduling Headache

If you’ve ever had to schedule a video call between Tokyo and Berlin, you know how tricky the time math can get. Central Europe switches to daylight saving time for part of the year, while Japan doesn’t at all. That means the time difference isn’t fixed, it’s 8 hours apart in winter and 7 in summer. This calculator handles all of that for you, making sure you're always looking at the correct local time on both ends.

How It Works, Step by Step

Start by Choosing a Date and Time

Use the input box labeled “Japan Standard Time (JST)” to pick a date and time. You can also change the input timezone to CET if you're starting from the European side. Either way, this field lets you anchor the conversion to the exact moment you're planning for.

Customize Settings to Match Your Preferences

Below the input, you'll find four options to tailor your experience:

Auto Convert: Automatically updates the result when you change the date or time
Daylight Saving Aware: Ensures that CET accurately switches between standard and summer time
Show UTC Offset: Adds clarity by showing how far each timezone is from UTC
Show Seconds: Includes seconds in all the time displays

View the Result Instantly

Once you’ve entered your time, the result appears in the output box. If you entered a JST time, it will show the corresponding CET time, and vice versa. It also breaks down:

The time difference in hours
Each timezone’s UTC offset
Whether daylight saving time is active
The full formatted time and date in both zones

Extra Controls That Give You More Flexibility

Swap Timezones with One Click

Not sure which direction you’re converting? Use the “Swap” button to flip the input and output timezones. The tool updates the labels and instantly refreshes the conversion if you’ve already entered a date and time.

Want to Use the Current Time?

Click the “Now” button to auto-fill the date and time fields with the current local time in the selected input timezone. Great for real-time coordination.

Switch Between 12-Hour and 24-Hour Format

If you prefer reading time in 24-hour format, just click the “12 Hour” button to toggle. It updates all live and converted times instantly.

Live Clocks for Both Zones

At the bottom, you’ll see real-time clocks for both JST and CET. These update every second and help you keep an eye on what time it is right now, regardless of what you're converting.

Tips for Getting the Most Out of It

If you're converting dates close to the end of March or October, double-check the daylight saving status using the “DST Aware” setting
Use the formatted time display to copy-paste into invites or emails
If your meeting crosses into the previous or next day in one timezone, the tool will handle the date change

When This Really Comes in Handy

Let’s say you're in Tokyo and trying to plan a webinar with viewers in Munich. You want it to start at 5 PM JST. Pop that into the converter, and you’ll see it’s 10 AM in Munich during summer months (CEST) or 9 AM in winter (CET). No guessing or spreadsheet needed. Whether you’re in Berlin scheduling a supplier call with Osaka, or organizing a virtual birthday party across timezones, this saves you from that awkward "wait, what time is it there again?" moment.

Keep Your Schedule in Sync, Wherever You Are

This JST-CET time conversion tool gives you the clarity you need when planning across timezones. No second-guessing. No surprises. Just accurate, reliable time conversions that work whether you're organizing an international team meeting, setting a reminder for a livestream, or catching up with a friend abroad. Simple, fast, and built to keep you in sync.