CST to JST Converter

Category: Time Zone Converters

- July 01, 2025

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Central Standard Time (CST)

UTC-6/-5 • Chicago, Houston, Dallas, Mexico City

Conversion Settings

Configure your timezone conversion preferences

Auto Convert

Daylight Saving Aware

Show UTC Offset

Japan Standard Time (JST)

UTC+9 • Tokyo, Osaka, Yokohama, Sapporo

--:--:--

Select a time to convert

Time Difference: --

UTC Offset (CST): -6:00

UTC Offset (JST): +9:00

DST Status: --

CST/CDT Time: --

JST Time: --

Time Format:

Current CST/CDT: --:--:--

Current JST: --:--:--

🌏 CST is UTC-6 (winter) and CDT is UTC-5 (summer). JST is always UTC+9 and never observes daylight saving time.

CST to JST Conversion Guide

What is CST to JST Conversion?

CST to JST conversion helps you translate time between Central Standard Time and Japan Standard Time zones. CST is UTC-6 in winter and becomes CDT (UTC-5) during daylight saving time from March to November. JST is always UTC+9 and never changes for daylight saving time.

Time Zone Information

Central Standard Time (CST): Used in central US, Canada, and Mexico including Chicago, Houston, Dallas, and Mexico City. UTC-6 in winter, becomes CDT (UTC-5) during daylight saving.

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

Time Difference: JST is typically 15 hours ahead of CST, or 14 hours ahead of CDT during daylight saving time.

Daylight Saving Time Impact

Winter Period (CST): November to March - JST is 15 hours ahead of CST

Summer Period (CDT): March to November - JST is 14 hours ahead of CDT

Japan Time: No daylight saving time changes - always UTC+9 year-round

Common Conversion Examples

Business Hours (Winter)

CST 9:00 AM → JST 12:00 AM (next day)

CST 6:00 PM → JST 9:00 AM (next day)

15 hour time difference during CST period

Business Hours (Summer)

CDT 9:00 AM → JST 11:00 PM (same day)

CDT 6:00 PM → JST 8:00 AM (next day)

14 hour time difference during CDT period

Meeting Planning

Best CST Time: 7:00 PM - 9:00 PM

Converts to JST: 10:00 AM - 12:00 PM (next day)

Evening CST for morning JST business hours

Event Scheduling

CST Midnight: 3:00 PM JST (same day)

CST Noon: 3:00 AM JST (next day)

Perfect for global event timing

Conversion Tips & Best Practices

• Always check if Central Time is observing CST or CDT when scheduling

• JST doesn't change - it's always 9 hours ahead of UTC throughout the year

• Business meetings work best when CST is in evening (7-9 PM) for JST morning hours

• Remember that dates often change across the conversion - JST is often a day ahead

• Use 24-hour format to avoid AM/PM confusion when scheduling internationally

• Japan does not observe daylight saving time, making scheduling more predictable

Time Conversion Between CST and JST

Need to line up your workday in Chicago with a team in Tokyo? This CST to JST time converter has your back. Whether you’re planning a virtual meeting or just checking when your friend in Japan is waking up, this tool keeps it simple. Here's a breakdown of the countries that use each timezone.

CST/CDT (UTC-6 / UTC-5)	JST (UTC+9)
🇺🇸 United States 🇨🇦 Canada 🇲🇽 Mexico 🇬🇹 Guatemala 🇭🇳 Honduras 🇸🇻 El Salvador 🇳🇮 Nicaragua 🇨🇷 Costa Rica 🇧🇿 Belize	🇯🇵 Japan

No more timezone math at midnight

Trying to schedule across Central Time and Japan can throw off your day if you're not careful. The time gap is wide, and with daylight saving in the mix, things shift around. This converter takes care of all the behind-the-scenes adjustments, so you can focus on what matters instead of figuring out if it's already tomorrow in Tokyo.

How to use the CST to JST converter

Pick your date and time

Use the calendar and clock input to enter your local time. It starts with CST by default, but you can flip it to JST in seconds.

Choose your base timezone

Select whether you’re starting from CST/CDT or JST. The tool automatically sets the other as your output zone and updates the headings so you always know which side is which.

Instant or manual—your call

If “Auto Convert” is checked, the results update as you go. If you’d rather trigger it yourself, uncheck that and hit the big “Convert Time” button when you’re ready.

Get your results and time difference

You’ll see the converted time clearly, plus:

Which offset is active (CST or CDT)
The difference in hours (usually 14 or 15)
Optional UTC offsets if you enable them
Formatted date and time for both zones

Helpful Tools built right into the interface

Swap conversion direction

Need to go from JST back to CST? Just hit “Swap” and everything reverses. The fields and headers adjust too, so it’s always clear which way the conversion flows.

Use current time with one click

The “Now” button drops in the present moment from your selected input zone. This is great for quick checks and real-time comparisons.

Customize your format

Switch between 12-hour and 24-hour clocks depending on what’s more natural for you. Your preference sticks as you convert and view both sides.

Live time display

At the bottom, you’ll see up-to-date clocks for both CST/CDT and JST. These update every second and keep you anchored to what’s happening in both zones right now.

Real-life example: planning from Dallas to Tokyo

You’re in Dallas and want to schedule a call with a colleague in Tokyo. You enter 8:00 PM CST for tomorrow. The tool tells you it’ll be 11:00 AM JST the next day. That makes it perfect timing to catch them right after their morning coffee—without waking up before sunrise yourself.

Stay in sync from Texas to Tokyo

Whether you're arranging meetings, attending global events, or just trying to catch a loved one on the other side of the world, the CST to JST converter gives you the confidence to plan correctly. No second guessing the time, no mixed-up dates. Just clear, reliable answers.