KST to JST Converter

Convert between any time zones worldwide. Free and accurate time zone converter with DST support.

Edit time and date on either side to see the conversion instantly.

Swap
KST
Korea Standard Time
Date changes are handled automatically when conversions cross midnight.
JST
Japan Standard Time
Date changes are handled automatically when conversions cross midnight.

Popular Timezone Conversions

CST to EST PST to EST MST to EST GMT to EST JST to EST GST to EST IST to EST EST to GMT

About KST to JST Conversion

Converting time between KST and JST requires understanding their time zone offsets and any daylight saving time adjustments. KST (KST) operates at UTC+9, while JST (JST) is set to UTC+9. Both time zones share the same UTC offset, so the time remains the same in both locations. For example, when it's 12:19 PM KST on February 4, 2026, it's 12:19 PM JST in JST. Use this converter to quickly find the equivalent time in JST for any time in KST, whether you're scheduling meetings, planning travel, or coordinating with teams across different time zones.

How to Use the Time Zone Converter

  1. Select your source timezone from the "From timezone" dropdown (use search to find quickly)
  2. Enter the date and time you want to convert (or click "Today" and "Now" for current time)
  3. Select your target timezone from the "To timezone" dropdown
  4. The conversion updates automatically as you change inputs - no button needed!
  5. Use "Copy" button to copy the converted time, or use presets for quick conversions

More Conversions from KST

KST to EST KST to CST KST to MST KST to MDT KST to PST KST to AKST KST to HST KST to GMT KST to CET KST to EET KST to MSK KST to IST KST to CST-CHINA KST to HKT KST to SGT KST to GST KST to AEST KST to AWST KST to NZST KST to UTC KST to ART KST to BRT KST to PHT KST to BDT KST to SAST KST to ICT KST to EAT KST to WAT KST to PKT

Frequently Asked Questions

What is the time difference between KST and JST?

The time difference between KST and JST is 0 hours. JST is 0 hours ahead KST.

Is JST ahead of or behind KST?

JST is ahead of KST by 0 hours. When it's 9 AM in KST, it's 9:00 AM in JST.

How many hours do you add to KST to get JST?

You add 0 hours to KST to get JST. For example, 9 AM KST + 0 hours = 9:00 AM JST.

Does the KST to JST time difference change during Daylight Saving Time?

No, the time difference between KST and JST remains constant throughout the year. Neither timezone observes Daylight Saving Time, so the 0-hour difference stays the same.

What is 9 AM KST in JST?

9 AM KST is 9:00 AM JST. This conversion accounts for the 0-hour time difference between the two timezones.

Is KST the same throughout the year when converting to JST?

Yes, the conversion between KST and JST remains consistent throughout the year. Since neither timezone observes Daylight Saving Time, the 0-hour difference is constant, making conversions predictable and straightforward.

ADVERTISEMENT

Bottom banner (responsive)

Copied to clipboard!