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KST to EST Time Converter

Use this KST to EST time converter to compare South Korea and US East Coast time instantly. EST is 14 hours behind KST, so 9:00 AM KST becomes 7:00 PM (previous day) EST and 5:00 PM KST becomes 3:00 AM EST. The page is useful for business-hours overlap, international calls, remote-team handoffs, webinars, and travel planning, with daylight saving adjustments handled automatically.

KST Korea Standard Time
...
EST Eastern Standard Time
...
Select a time to convert

KST to EST Quick Facts

Use this KST to EST converter to compare South Korea and US East Coast time, check the 14 hours gap, and confirm the right slot for calls, handoffs, and deadlines. Find the best overlap for calls and meetings.

Time Difference
Eastern Standard Time is 14 hours behind Korea Standard Time
Useful when deadlines, handoffs, or calls cross workday boundaries.
Best Call Window
Normal business hours do not overlap well here, so test early-morning or late-evening compromise slots.
Common Use Cases
Useful for remote teams, customer support windows, travel planning, webinars, and same-day deadline handoffs.

How to Convert KST to EST

Converting between Korea Standard Time and Eastern Standard Time means accounting for a 14 hours gap — here's how to do it in under 10 seconds with no sign-up.

Enter Your KST Time

Pick the date and time in Korea Standard Time (UTC +9) that you want to convert. Hit "Now" to load the current KST time instantly, or use "+1h" to step forward and compare.

Read the EST Result

The equivalent Eastern Standard Time (UTC -5) time appears immediately. Since EST is 14 hours behind of KST, conversions often cross midnight — look for the date-change label.

Copy or Fine-Tune

Click "Copy Time" to grab the EST result for your calendar or message. Use "+1d" to check how the conversion shifts across dates — helpful for scheduling recurring South Korea–United States calls.

Why Choose Our KST to EST Converter

Align KST–EST Meetings Instantly

With 14 hours between KST and EST, business-hours overlap is limited. This tool instantly shows which hours work on both sides, so you can lock in a meeting without a chain of "does 3 PM work for you?" emails.

Spot Date-Line Shifts at a Glance

A KST evening at 9 PM is already the previous afternoon in EST. This converter flags date changes beside the result — critical when booking flights, hitting deadlines, or scheduling across the South Korea–United States corridor.

Handles DST Transitions Automatically

Daylight Saving adjustments can widen or narrow the KST–EST gap by an hour. During transition weeks many people get it wrong. This converter pulls the current UTC offsets automatically, so the result is right even on the changeover day.

Never Miss a KST-Timed Event

Product launches, sports matches, and webinars are often announced in KST. Convert the event time to EST so you know exactly when to tune in — with a 14 hours difference, a morning event in South Korea hits the evening in United States.

KST to EST Time Conversion Chart

Quick-reference conversion table covering every hour of the day at a glance.

Complete 24-Hour Conversion

Korea Standard Time to Eastern Standard Time full day schedule

12:00 AM
KST
→
10:00 AM
EST
(previous day)
1:00 AM
KST
→
11:00 AM
EST
(previous day)
2:00 AM
KST
→
12:00 PM
EST
(previous day)
3:00 AM
KST
→
1:00 PM
EST
(previous day)
4:00 AM
KST
→
2:00 PM
EST
(previous day)
5:00 AM
KST
→
3:00 PM
EST
(previous day)
6:00 AM
KST
→
4:00 PM
EST
(previous day)
7:00 AM
KST
→
5:00 PM
EST
(previous day)
8:00 AM
KST
→
6:00 PM
EST
(previous day)
9:00 AM
KST
→
7:00 PM
EST
(previous day)
10:00 AM
KST
→
8:00 PM
EST
(previous day)
11:00 AM
KST
→
9:00 PM
EST
(previous day)
12:00 PM
KST
→
10:00 PM
EST
(previous day)
1:00 PM
KST
→
11:00 PM
EST
(previous day)
2:00 PM
KST
→
12:00 AM
EST
3:00 PM
KST
→
1:00 AM
EST
4:00 PM
KST
→
2:00 AM
EST
5:00 PM
KST
→
3:00 AM
EST
6:00 PM
KST
→
4:00 AM
EST
7:00 PM
KST
→
5:00 AM
EST
8:00 PM
KST
→
6:00 AM
EST
9:00 PM
KST
→
7:00 AM
EST
10:00 PM
KST
→
8:00 AM
EST
11:00 PM
KST
→
9:00 AM
EST
Reviewed by iFormat Time Tools Team Last updated

Timezone offsets and DST rules verified against the IANA Time Zone Database. Conversion math and business-hour overlap windows double-checked against real-world scheduling scenarios.

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KST to EST FAQ

Quick answers about daylight saving time, date changes, business-hour overlap, and the most common scheduling questions between Korea Standard Time and Eastern Standard Time.

What is the time difference between KST and EST?

EST is 14 hours behind KST. KST is UTC +9:00 and EST is UTC −5:00 relative to UTC. EST observes daylight saving but KST does not, so the gap shifts by an hour twice a year. In EST winter the difference is 14 hours; in summer it changes by one hour.

When can KST and EST have business-hour overlap?

There is no clean business-hour overlap between KST and EST — the 14 hours gap pushes at least one side outside 9-to-5. Schedule calls at the very start or end of one party's day.

Does KST or EST observe daylight saving time?

EST observes daylight saving but KST does not, so the gap shifts by an hour twice a year. In EST winter the difference is 14 hours; in summer it changes by one hour.

How do I quickly convert KST to EST?

To convert KST to EST, add 14 hours subtract from the KST time. Example: if it's 10:00 AM KST, it's 20:00 EST that day. The live converter at the top of this page handles DST automatically.

Popular KST Time Converters

Explore more KST conversions for major business and travel corridors. Each page includes a 24-hour chart, time difference summary, and meeting overlap guidance.

Convert Other Time Zones to EST

Find the time difference from any major zone into Eastern Standard Time. Use these pages when scheduling with United States from a different region.

🇺🇸 Swap direction — EST to KST Converter