Convert AEST to KST
See the current time difference between AEST and KST, compare hours side by side, and plan calls or meetings quickly.
How to Convert AEST to KST
Open the AEST to KST converter: Go to https://www.xconvert.com/time-converter/aest-to-kst-converter to load a visual comparison grid with AEST and KST already lined up on a 24-hour timeline. This page is useful when you are scheduling a supplier call between Brisbane and Seoul, coordinating an Australia–Korea gaming launch, or checking whether a support handoff fits both teams’ business hours.
Add comparison cities if your schedule involves more regions: Click “+ Add City” and search for cities such as Sydney, Seoul, Singapore, or Tokyo to compare nearby operating markets often used in logistics, electronics, finance, and regional APAC management. For example, Korean manufacturers and Australian mining, education, and retail teams often also need to see Singapore for procurement or Tokyo for partner calls, so adding extra rows helps you avoid choosing a time that works in Korea but falls outside another office’s workday.
Drag across the grid to select the meeting window: Click “Select” if needed, then drag across the colored timeline on the AEST row to highlight a range in purple; you can resize it with the left and right handles or move the whole block by dragging the center. For example, if you drag 9:00 AM to 11:00 AM AEST, the KST row will show 10:00 AM to 12:00 PM KST, confirming that Korea is normally 1 hour ahead of AEST and that this is a practical morning-to-midday overlap for project reviews or sales calls.
Export and share the confirmed time: Once a range is selected, use the export options for ICS download, Google Calendar, Gmail, Copy to clipboard, or Share link. This is especially useful for sending a calendar invite to an Australian university partner and a Seoul operations team, because each participant will see the meeting automatically converted into their local time without manually recalculating offsets.
Understanding the AEST to KST Time Difference
AEST is usually 1 hour behind KST. Australian Eastern Standard Time is UTC+10:00, while Korea Standard Time is UTC+9:00? Actually, because KST is UTC+9:00 and AEST is UTC+10:00, AEST is 1 hour ahead of KST, not behind. That means when it is 9:00 AM in KST, it is 10:00 AM in AEST, and when it is 9:00 AM AEST, it is 8:00 AM KST.
The key point is that KST does not observe daylight saving time at all. South Korea stays on UTC+9 year-round, including in Seoul, Busan, Incheon, and Daegu. This makes Korean scheduling relatively stable for international teams, airlines, and manufacturing supply chains because there is no spring or autumn clock change to track on the Korean side.
The complication comes from Australia, because AEST is standard time only, used year-round in places like Brisbane, Queensland, but not year-round in cities such as Sydney, Melbourne, and Canberra, which switch to daylight saving time. In the Australian states that observe DST, clocks usually move forward on the first Sunday in October and move back on the first Sunday in April; during that period those cities are on AEDT (UTC+11:00), making them 2 hours ahead of KST instead of 1 hour ahead.
This means the AEST-to-KST difference itself stays at 1 hour when you are truly comparing AEST (UTC+10) to KST (UTC+9). However, many users searching for AEST really mean eastern Australia generally, including Sydney and Melbourne in summer. In those DST months—roughly October through early April—the practical difference for Sydney/Melbourne versus Korea changes from 1 hour to 2 hours, so a meeting that is easy in June may shift later for Korean participants in December.
For real-world planning, this matters in sectors with regular Australia–Korea contact such as education recruitment, LNG and mining trade, beauty and retail imports, esports, and regional technology support. A Brisbane-based team working on AEST can keep a stable 1-hour difference with Seoul all year, while a Sydney-based team must account for the seasonal jump during the DST period.
Best Times for Calls and Meetings Between AEST and KST
Because AEST is 1 hour ahead of KST, the overlap between normal office hours is straightforward and usually favorable. If you define business hours as 9:00 AM to 5:00 PM in both locations, the shared window is effectively 10:00 AM to 5:00 PM AEST, which corresponds to 9:00 AM to 4:00 PM KST. This gives Australia–Korea teams a long same-day collaboration window without requiring late-night or early-morning calls.
A practical morning option is 10:00 AM to 12:00 PM AEST = 9:00 AM to 11:00 AM KST. This works well for kickoff meetings, supplier updates, and customer support escalations because it catches Korea at the start of the workday while still fitting comfortably into the Australian morning. It is especially useful for companies coordinating between Brisbane and Seoul, where there is no DST complication on the Australian side.
A strong midday window is 1:00 PM to 3:00 PM AEST = 12:00 PM to 2:00 PM KST. This slot is often ideal for cross-border operations, e-commerce, and manufacturing discussions because both teams are fully online and there is enough time afterward to act on decisions the same day. For example, an Australian importer can confirm shipment details with a Korean supplier before freight cutoffs and warehouse processing deadlines.
For recurring weekly meetings, 2:00 PM to 4:00 PM AEST = 1:00 PM to 3:00 PM KST is often the safest choice. It avoids the earliest Korean morning hours and still ends before late afternoon in both markets, which helps teams in finance, procurement, and software delivery keep a reliable cadence. If one side includes Sydney or Melbourne during daylight saving time rather than true AEST, check the date picker carefully because the equivalent Korean time will shift by an extra hour.
If you need to avoid lunch-hour conflicts, a narrower but effective overlap is 11:00 AM to 12:00 PM AEST = 10:00 AM to 11:00 AM KST. This is a common slot for executive check-ins, university partnership calls, and media coordination, especially when participants need a concise meeting before the rest of their local schedule fills up.
Frequently Asked Questions
What is the time difference between AEST and KST?
AEST is 1 hour ahead of KST. AEST is UTC+10:00 and KST is UTC+9:00, so when it is 3:00 PM in AEST, it is 2:00 PM in KST on the same day. This small gap makes Australia–Korea scheduling easier than many other international pairings because both zones are in the Asia-Pacific region and share a large daytime overlap.
When is 9 AM AEST in KST?
9:00 AM AEST is 8:00 AM KST on the same calendar day. Since AEST is 1 hour ahead, you subtract one hour when converting from AEST to KST. This is useful for planning morning standups, because a 9 AM Brisbane meeting reaches Seoul just before standard office hours begin.
Does the difference between AEST and KST change during daylight saving time?
If you are strictly comparing AEST to KST, the difference stays 1 hour because AEST is standard time and KST never changes from UTC+9. However, confusion happens because eastern Australian cities like Sydney and Melbourne switch to AEDT (UTC+11) from the first Sunday in October to the first Sunday in April, and during that period they are 2 hours ahead of KST. So the named time zone matters: AEST vs KST = 1 hour, but AEDT vs KST = 2 hours.
What is the best meeting time between AEST and KST?
The best recurring window is usually 10:00 AM to 3:00 PM AEST, which equals 9:00 AM to 2:00 PM KST. That range keeps both teams within normal business hours and leaves enough time afterward for follow-up tasks, approvals, or same-day logistics. For executive calls or client presentations, 11:00 AM AEST = 10:00 AM KST is often one of the cleanest single-hour options.
Is Seoul on the same time as AEST?
No, Seoul is 1 hour behind AEST. Seoul uses KST (UTC+9) all year, while AEST is UTC+10. So if it is 6:00 PM in Brisbane, it is 5:00 PM in Seoul.
Why do some websites show Australia and Korea as 2 hours apart?
That usually happens when the comparison is actually using AEDT, not AEST. Cities such as Sydney, Melbourne, and Canberra observe daylight saving time from the first Sunday in October until the first Sunday in April, moving to UTC+11, while Korea remains on UTC+9. During those months, those Australian cities are indeed 2 hours ahead of Seoul, but Brisbane on AEST remains only 1 hour ahead.
How can I schedule a call between Brisbane and Seoul accurately?
Use the converter page’s visual grid and keep the date set correctly, especially if other Australian cities are also involved. Brisbane stays on AEST year-round, so its offset to Seoul remains stable at 1 hour, making recurring calls easier to manage than schedules involving Sydney or Melbourne. A good default is 10:00 AM Brisbane = 9:00 AM Seoul, which works well for trade, education, and regional operations teams.
Are there good business hours overlap for remote teams in Australia and South Korea?
Yes, the overlap is strong compared with Europe–Asia or US–Asia coordination. A standard 9:00 AM to 5:00 PM AEST workday maps to 8:00 AM to 4:00 PM KST, and the most practical shared collaboration block is usually 10:00 AM to 4:00 PM AEST = 9:00 AM to 3:00 PM KST. This is why Australia–Korea coordination is common in industries such as consumer electronics, shipping, education, gaming, and regional APAC support.