Convert AEST to KST
Check the 1-hour time difference between AEST and KST, compare hours side by side, and schedule meetings with calendar export tools.
How AEST to KST Works
AEST is UTC+10 and KST is UTC+9, so KST is 1 hour behind AEST. Enter any time to convert it instantly across both time zones.
Hour-by-Hour Time Table
Use the visual hour-by-hour table to compare AEST and KST across the day. Scan business hours quickly and export selected times to ICS or Google Calendar.
Schedule Meetings Accurately
Find overlapping working hours between AEST and KST and share meeting times by Gmail or calendar export. Time calculations adjust automatically using the IANA timezone database.
How to Convert AEST to KST
Open the AEST to KST converter: Visit https://www.xconvert.com/time-converter/aest-to-kst-converter to load a visual comparison grid with AEST and KST aligned on a 24-hour timeline. This page is useful when you are scheduling a supplier call between Australia and South Korea, coordinating a gaming launch across Sydney and Seoul, or planning support coverage for customers in both time zones.
Add comparison cities if your schedule involves more teams: Click + Add City and search for cities that matter to your workflow, such as Sydney for Australian operations or Seoul for South Korean business coordination. This is especially helpful for industries like electronics, shipping, education, and regional sales, where teams in Australia and Korea often need to compare local work hours before confirming a meeting.
Drag to select the meeting window on the grid: Click Select, then drag across the colored timeline in the AEST row to highlight a time range in purple; you can resize it with the side handles or move it by dragging the center. For example, if you highlight 9:00 AEST to 12:00 AEST, the tool shows 8:00 KST to 11:00 KST, which is a practical overlap for morning check-ins, project updates, or customer calls.
Export and share the confirmed time range: Once a range is selected, use the export options for ICS download, Google Calendar, Gmail, Copy to clipboard, or Share link. This is useful when a Sydney-based team needs to send a calendar hold to colleagues in Seoul so everyone receives the meeting in local time without manually converting 15:00 AEST = 14:00 KST or 18:00 AEST = 17:00 KST.
Understanding the AEST to KST Time Difference
AEST is Australian Eastern Standard Time (UTC+10) and KST is Korea Standard Time (UTC+9). AEST is 1 hour ahead of KST, which means KST is -1 hours behind AEST. In practical terms, when it is 9:00 AEST, it is 8:00 KST, and when it is 12:00 AEST, it is 11:00 KST.
This small one-hour gap makes Australia–Korea coordination easier than many cross-border schedules in Asia-Pacific. The same pattern continues through the day: 15:00 AEST = 14:00 KST and 18:00 AEST = 17:00 KST, so a standard afternoon in eastern Australia still falls within the business day in South Korea. That is useful for procurement teams, university partnerships, airline coordination, and regional account management.
Daylight saving time is the main reason users should pay attention to the season. AEST is a standard-time abbreviation, and its DST counterpart is AEDT, while KST does not observe DST. That means the AEST-to-KST relationship described here applies during the standard-time period in eastern Australia, but the difference changes during the months when parts of Australia switch from AEST to AEDT.
AEST is used in Australia, while KST is used in South Korea and North Korea. For businesses working with Seoul-based technology firms, Korean manufacturers, or Australian service teams on the east coast, this converter helps avoid one-hour scheduling mistakes that can still disrupt handoffs, interviews, demos, and recurring weekly meetings.
Best Times for Calls and Meetings Between AEST and KST
Because AEST is only 1 hour ahead of KST, there is a broad overlap between normal business hours in eastern Australia and Korea. A morning meeting in Australia usually remains a morning meeting in Korea, which reduces the need for very early starts or late-evening calls. For example, 9:00 AEST = 8:00 KST, making it suitable for early coordination with Korean teams that begin work promptly.
Midday is often the easiest slot for recurring meetings because both sides are fully into the workday. If you schedule a call at 12:00 AEST, it is 11:00 KST, which works well for sales reviews, logistics updates, and cross-border vendor discussions before lunch schedules start to vary. This is a strong option for companies managing shipments, retail sourcing, or regional marketing campaigns between Australia and Korea.
Afternoon meetings also remain practical without pushing the Korean side into evening hours too quickly. 15:00 AEST = 14:00 KST, which is a comfortable time for project standups, technical reviews, and client presentations. Even 18:00 AEST = 17:00 KST can still work for end-of-day coordination, especially when teams need a final status check before closing business in Korea.
The main exception is the daylight saving period in Australia. Since KST does not observe DST and AEST changes to AEDT during the seasonal switch in relevant Australian regions, teams should confirm the meeting time carefully when moving from standard time into daylight time months. This matters most for recurring calendar invites, because a meeting that worked perfectly during AEST may shift once Australia is no longer on standard time.
Frequently Asked Questions
What is the time difference between AEST and KST?
AEST is UTC+10 and KST is UTC+9, so AEST is 1 hour ahead of KST. Another way to say it is that KST is -1 hours behind AEST. For a quick reference, 9:00 AEST = 8:00 KST.
When is 9 AM AEST in KST?
9:00 AEST = 8:00 KST. This is a useful conversion for morning standups, customer support handovers, or school and university coordination between eastern Australia and Korea, because both sides are still within normal morning working hours.
When is 12 PM AEST in KST?
12:00 AEST = 11:00 KST. This is one of the easiest times to schedule a cross-border meeting because it lands near midday in both locations, making it practical for operations teams, account managers, and logistics coordinators.
Does the difference between AEST and KST change during DST?
Yes, the difference changes when eastern Australia moves off AEST and onto AEDT, because AEST is a standard-time abbreviation and KST does not observe DST. The one-hour relationship on this page applies specifically to AEST, so recurring meetings should be reviewed during the months when Australian daylight saving is in effect.
What is the best meeting time between AEST and KST?
A strong meeting window is during the shared business day, especially around the examples shown on this page. 9:00 AEST = 8:00 KST works for early coordination, 12:00 AEST = 11:00 KST is ideal for mid-morning collaboration in Korea, and 15:00 AEST = 14:00 KST is a comfortable afternoon slot for both teams.
Is KST ahead of AEST or behind it?
KST is behind AEST by 1 hour. That means every time you move from AEST to KST, you use the one-hour earlier Korean time shown in the examples, such as 18:00 AEST = 17:00 KST.
Which countries use AEST and KST?
AEST is used in Australia. KST is used in South Korea and North Korea, so this conversion is relevant for trade, travel planning, manufacturing coordination, and remote work between Australia and the Korean Peninsula.
Why is AEST to KST easy to manage for business meetings?
The schedule is relatively easy because the gap is only 1 hour, which preserves a large shared workday. Teams can hold calls in the Australian morning or afternoon without forcing Korean colleagues into very late or very early hours, and examples like 12:00 AEST = 11:00 KST show how naturally the two business days align.