WorldClock.lol

IST to KST Time Converter

Convert India Standard Time to Korea Standard Time

IST
India Standard Time
04:30 PM
UTC+5:30
KST
Korea Standard Time
08:00 PM
UTC+9

Convert a Specific Time

:
12:00 PM
=
4:00 PM

IST to KST Conversion Table

ISTKST
12:00 AM4:00 AM
3:00 AM7:00 AM
6:00 AM10:00 AM
9:00 AM1:00 PM
12:00 PM4:00 PM
3:00 PM7:00 PM (-1)
6:00 PM10:00 PM (-1)
9:00 PM1:00 AM (+1)

Frequently Asked Questions

What is the time difference between IST and KST?

India Standard Time (IST) is UTC+5:30 and Korea Standard Time (KST) is UTC+9. The exact difference can vary due to Daylight Saving Time changes.

When is 9 AM IST in KST?

Use our converter above to find the exact time. Enter 9:00 in the IST field to see the corresponding KST time, accounting for current DST rules.

Does IST observe Daylight Saving Time?

India Standard Time (IST) is based on the Asia/Kolkata timezone. DST observance depends on local regulations. Our converter automatically accounts for current DST rules.

Convert KST to IST instead

IST to KST Time Converter

When it is 9:00 AM IST, it is 0.5:00 PM KST. Korea Standard Time (KST, UTC+9) is 3.5 hours ahead of India Standard Time (IST, UTC+5:30). Your working-hours overlap window is 9:00 AM–1.5:00 PM IST (0.5:00 PM–5:00 PM KST).

IST to KST Conversion Table

ISTKST
12:00 AM3.5:00 AM
3:00 AM6.5:00 AM
6:00 AM9.5:00 AM
9:00 AM0.5:00 PM
12:00 PM3.5:00 PM
3:00 PM6.5:00 PM
6:00 PM9.5:00 PM
9:00 PM0.5:00 AM (+1 day)

Major Cities Using IST and KST

India Standard Time (IST): Mumbai, Delhi, Bangalore, Chennai, Kolkata, Colombo.

Korea Standard Time (KST): Seoul, Busan, Incheon.

How many hours between IST and KST?

IST is UTC+5:30 and KST is UTC+9, a difference of 3.5 hours. KST is ahead of IST. This difference can shift by an hour in either direction during Daylight Saving Time transitions — if one zone observes DST and the other doesn't, the offset narrows or widens for part of the year.

Business Hours Overlap: ISTKST

Assuming a 9:00 AM – 5:00 PM workday on each side, your working-hours overlap window is 9:00 am–1.5:00 pm ist (0.5:00 pm–5:00 pm kst). To visualize this instantly for any pair of cities, use the visual meeting planner or the timezone overlap finder — both highlight the green overlap window on a live timeline.

Does IST observe Daylight Saving Time?

India Standard Time (IST) is based on the Asia/Kolkata IANA timezone. DST observance depends on the jurisdiction — for example, most of the continental US switches between standard and daylight time, while India, Japan, and most of Southeast Asia do not observe DST at all. WorldClock.lol uses the authoritative IANA timezone database, so every conversion automatically accounts for the correct DST rules on the date you're converting.

When is 9 AM IST in KST?

When it is 9:00 AM in India Standard Time (IST, UTC+5:30), it is 0.5:00 PM in Korea Standard Time (KST). For other times of day, scan the conversion table above or drop into the interactive converter to pick an exact minute. The converter handles both standard and daylight variants correctly.

How to Use This IST to KST Converter

  1. Type or drag any time in the IST input above — the KST equivalent updates instantly.
  2. Check the day indicator. When the converted time crosses midnight, the tool shows +1 day or −1 day so you don't book a meeting on the wrong date.
  3. Copy the shareable URL to send the specific conversion to a colleague — the link preserves your exact selection.
  4. Switch directions by swapping the input zones, or open KST to IST for the reverse.

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