Compare IST vs KST
See the current 3:30 hour time difference between India Standard Time and Korea Standard Time, with meeting-friendly hours and live comparison tools.
IST to KST Difference
India Standard Time is UTC+5:30 and Korea Standard Time is UTC+9, so KST is 3 hours 30 minutes ahead of IST year-round.
No DST Impact
Neither India Standard Time nor Korea Standard Time currently observes daylight saving time, so the offset stays stable throughout the year.
Best Meeting Hours
Use the hour-by-hour comparison grid to find overlap times, then export meetings with ICS download or send to Google Calendar and Gmail.
How to Find the Time Difference Between IST and KST
IST (India Standard Time, UTC+5:30) is compared here with KST (Korea Standard Time, UTC+9). KST is 3 hours 30 minutes ahead of IST, so when it is 9:00 in India Standard Time, it is 12:30 in Korea Standard Time.
Looking for Irish Standard Time? See /time-converter/ist-ireland-time-zone.
Looking for Israel Standard Time? See /time-converter/ist-israel-time-zone.
Open the IST vs KST converter: Visit
https://www.xconvert.com/time-converter/ist-vs-kstto see India Standard Time and Korea Standard Time already loaded in the comparison grid. This view is useful when you are scheduling a supplier call between India and South Korea, coordinating an engineering handoff, or checking whether a support shift overlaps with business hours in Seoul.Add more cities for business context: Click + Add City and search for cities that matter to your workflow, such as Bengaluru, Mumbai, or Seoul. This helps remote teams in software, electronics manufacturing, logistics, and cross-border consulting compare India Standard Time with Korea Standard Time alongside the specific cities where colleagues, clients, or factory partners are based.
Drag to highlight a meeting window: Click Select if needed, then drag across the grid to mark a time range in purple; you can adjust it with the left and right handles or move the whole block by dragging the center. For example, drag from 9:00 to 12:00 IST to see the matching 12:30 to 15:30 KST window, which is a practical overlap for late-morning India meetings with early-afternoon teams in South Korea.
Export the selected time for your team: 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 you want to send a confirmed India–Korea meeting slot to a procurement team, attach it to a calendar invite for a product review, or share a link in Slack or email so everyone sees the same local time automatically.
IST vs KST Offset Explained
India Standard Time is UTC+5:30, while Korea Standard Time is UTC+9. That means KST is 3 hours 30 minutes ahead of IST, or viewed the other way, IST is 3 hours 30 minutes behind KST. In practical terms, a workday that starts at 9:00 IST begins at 12:30 KST, and 15:00 IST lines up with 18:30 KST.
India Standard Time does not observe daylight saving time, and Korea Standard Time also does not observe daylight saving time. Because neither time zone changes seasonally, the 3 hours 30 minutes gap stays the same throughout the year, which makes recurring meetings, vendor updates, and weekly team standups easier to keep consistent without spring or autumn clock changes.
This fixed offset is especially helpful for companies that coordinate regular work between India and South Korea in sectors such as IT services, automotive supply chains, semiconductors, electronics, and international trade. If a team in India wants an afternoon discussion, 12:00 IST = 15:30 KST, while an early-evening India call at 18:00 IST = 21:30 KST may already be too late for standard office hours in Korea.
Best Times to Schedule Calls Between India and Korea
India Standard Time and Korea Standard Time have a manageable but meaningful gap for live collaboration. Since Korea Standard Time is 3 hours 30 minutes ahead, morning hours in India push into midday and afternoon in Korea, which often works well for project reviews, procurement calls, design approvals, and customer support escalations.
A few common reference points make planning easier: 9:00 IST = 12:30 KST, 12:00 IST = 15:30 KST, 15:00 IST = 18:30 KST, and 18:00 IST = 21:30 KST. These examples show why late morning to early afternoon in India is often the most practical period for same-day communication with South Korea, while late evening in Korea can become a constraint for teams trying to keep meetings inside normal office hours.
Countries Using IST and KST
India Standard Time is used in India. Korea Standard Time is used in North Korea and South Korea, so the same IST-to-KST difference applies when coordinating with organizations, partners, or travelers dealing with either Korean time zone usage on this page.
For travel planning and operations, this matters when arranging airport pickups, hotel check-ins, factory visits, or cross-border support coverage between India and the Korean peninsula. Because neither India Standard Time nor Korea Standard Time uses daylight saving time, flight-day coordination, arrival messaging, and recurring calendar events keep the same relationship year-round.
Frequently Asked Questions
What is the time difference between India Standard Time and Korea Standard Time?
India Standard Time is 3 hours 30 minutes behind Korea Standard Time. Put another way, KST is 3 hours 30 minutes ahead of IST, so a meeting planned for 9:00 IST will happen at 12:30 KST.
Is KST always 3 hours 30 minutes ahead of India Standard Time?
Yes, Korea Standard Time stays 3 hours 30 minutes ahead of India Standard Time all year. India Standard Time does not observe DST, and Korea Standard Time does not observe DST either, so the gap does not change by season.
What is 12 PM India Standard Time in Korea Standard Time?
12:00 IST = 15:30 KST. This is often a useful conversion for lunch-hour or early-afternoon business calls from India to South Korea, especially for teams that want to avoid late-evening meetings in Korea.
What is 6 PM India Standard Time in Korea Standard Time?
18:00 IST = 21:30 KST. That conversion is important for remote teams because an evening meeting in India becomes a late-night call in Korea, which may be unsuitable for standard office schedules.
Is IST India Standard Time or Irish Standard Time?
On this page, IST means India Standard Time (UTC+5:30). IST can also mean Irish Standard Time (UTC+1), and if you need that version, use /time-converter/ist-ireland-time-zone; for Israel Standard Time, use /time-converter/ist-israel-time-zone.
Do India Standard Time and Korea Standard Time use daylight saving time?
No, India Standard Time does not observe DST and Korea Standard Time does not observe DST. That means recurring meetings, travel itineraries, and handoff schedules between India and Korea remain on the same 3 hours 30 minutes difference throughout the year.
What are the most useful IST to KST conversion examples for work scheduling?
The most practical reference points are 9:00 IST = 12:30 KST, 12:00 IST = 15:30 KST, 15:00 IST = 18:30 KST, and 18:00 IST = 21:30 KST. These examples help teams quickly judge whether a proposed time falls into normal office hours, late afternoon, or evening on the Korea side.