KST to IST Time Converter

Convert Korea Standard Time (KST) to India Standard Time (IST). Both time zones are shown live below; current offset between them is 3h 30m behind.

Seoul · Korea Standard Time
03:28:33
Tuesday, May 12, 2026
GMT+9 · UTC+09:00
Mumbai · India Standard Time
23:58:33
Monday, May 11, 2026
GMT+5:30 · UTC+05:30

Convert a specific time

From: KST (Seoul)
To: IST (Mumbai)
--:--

Daylight Saving status right now

KST (Korea Standard Time)
Observes DST
No
IST (India Standard Time)
Observes DST
No

When can KST and IST meet?

00
01
02
03
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08
09
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KST
IST
Both zones in working hours (9am-5pm)
One zone working
Off-hours
Columns are hours of the day in Seoul (KST). Each row shows the local working-hours state in that zone for the same moment in time.
4 hours of overlap during standard 9am-5pm working hours.
Best meeting window: 13:00–16:00 KST (09:30–12:30 IST).

Hour-by-hour KST to IST conversion table

KST time (Seoul)IST time (Mumbai)Status
00:00 Tue20:30 MonOff-hours both sides
01:00 Tue21:30 MonOff-hours both sides
02:00 Tue22:30 MonOff-hours both sides
03:00 Tue23:30 MonOff-hours both sides
04:00 Tue00:30 TueOff-hours both sides
05:00 Tue01:30 TueOff-hours both sides
06:00 Tue02:30 TueOff-hours both sides
07:00 Tue03:30 TueOff-hours both sides
08:00 Tue04:30 TueOff-hours both sides
09:00 Tue05:30 TueKST working
10:00 Tue06:30 TueKST working
11:00 Tue07:30 TueKST working
12:00 Tue08:30 TueKST working
13:00 Tue09:30 TueBoth at work
14:00 Tue10:30 TueBoth at work
15:00 Tue11:30 TueBoth at work
16:00 Tue12:30 TueBoth at work
17:00 Tue13:30 TueIST working
18:00 Tue14:30 TueIST working
19:00 Tue15:30 TueIST working
20:00 Tue16:30 TueIST working
21:00 Tue17:30 TueOff-hours both sides
22:00 Tue18:30 TueOff-hours both sides
23:00 Tue19:30 TueOff-hours both sides

Times computed for today in each zone using the IANA time zone database. The conversion accounts for daylight saving time wherever applicable.

About these time zones

Korea Standard Time (KST)
IANA identifier
Asia/Seoul
Current UTC offset
UTC+09:00
Current abbreviation
GMT+9
Major cities in this zone
SeoulBusan
India Standard Time (IST)
IANA identifier
Asia/Kolkata
Current UTC offset
UTC+05:30
Current abbreviation
GMT+5:30
Major cities in this zone
MumbaiNew DelhiBangaloreChennaiKolkata

Sun today in Seoul and Mumbai

Seoul
Sunrise
05:27
Sunset
19:32
Solar noon
12:29
Daylight
14h 4m
Mumbai
Sunrise
06:06
Sunset
19:05
Solar noon
12:36
Daylight
12h 58m

Related converters

IST to KST (reverse)KST to ESTKST to PSTKST to GMTKST to UTCKST to CETEST to ISTPST to ISTGMT to ISTUTC to ISTCET to IST
Looking for local time? See time in Seoul or time in Mumbai.

Frequently asked questions

What is the time difference between KST and IST right now?+
IST (India Standard Time) is currently 3h 30m behind KST (Korea Standard Time). The exact difference can change when one or both zones transition into or out of daylight saving time.
Does KST or IST observe daylight saving time?+
KST: does not observe daylight saving time. IST: does not observe daylight saving time.
When is the best time to schedule a meeting between KST and IST?+
The strongest overlap is 13:00–16:00 KST (09:30–12:30 IST), giving 4 hours when both sides are within standard 9am-5pm working hours.
What time is it in Mumbai when it is 12:00 noon in Seoul?+
When it is 12:00 Tue in Seoul (KST), it is 08:30 Tue in Mumbai (IST).
Which IANA time zone identifiers are used for KST and IST?+
KST maps to "Asia/Seoul" in the IANA database. IST maps to "Asia/Kolkata". These identifiers are what most software libraries use to convert times accurately, including DST handling.
Is Seoul ahead of or behind Mumbai?+
Whether Seoul (KST) is ahead of or behind Mumbai (IST) depends on the current UTC offsets. Right now IST is 3h 30m behind KST. The live converter and side-by-side clocks above always reflect the current direction.
What are the current UTC offsets for KST and IST?+
KST is UTC+09:00 (GMT+9) and IST is UTC+05:30 (GMT+5:30). Both offsets shift by one hour when the corresponding region enters or exits daylight saving time, so the live values on this page are the source of truth.
Can I schedule meetings during business hours for both KST and IST?+
Yes. There are 4 hours of overlap during standard 9am-5pm working hours, with the strongest window at 13:00–16:00 KST.