KST to IST Converter (Korea Time to India Time)

IST is 3 hours 30 minutes behind KST.

Korea Standard Time is UTC+9 and India Standard Time is UTC+05:30. Neither country observes daylight saving time, so the gap between Seoul and New Delhi, Mumbai, Bengaluru or Chennai is three and a half hours in every month. To get the Indian time, subtract three hours and thirty minutes from the Korean one.

The half-hour offset is the part that causes errors. 9:00 a.m. in Seoul is 5:30 a.m. in Delhi, not 6:00 a.m., and 6:00 p.m. in Seoul is 2:30 p.m. in Mumbai. It helps to work with minutes instead of rounded hours.

How to use this tool

1. Pick a date and time in KST. The date matters when daylight saving time is in force.
2. Read the matching time in IST, with both UTC offsets.
3. Use "Use current time" for now, or the tables below for a quick look.

Formula

IST time = KST time − (KST UTC offset) + (IST UTC offset)

The converter looks up both UTC offsets for the actual instant in the saved IANA time zone rules, so daylight saving changes are included automatically.

Example

Worked with the saved rules:

9:00 AM KST on March 2, 2026 = 5:30 AM IST

6:30 PM KST on August 3, 2026 = 3:00 PM IST

Time difference through the year

The difference depends on the date when either place moves its clocks. These are the offsets on two reference days, from the saved IANA rules:

Clock changes in 2026

Korea Standard Time and India Standard Time do not change clocks in this year, so the difference stays the same all year.

KST to IST time table

Each hour in Korea Standard Time with the matching India Standard Time time.

IST to KST time table

Each hour in India Standard Time with the matching Korea Standard Time time.

Hours that work in both places

Hours (on the January reference day) that fall between 8:00 AM and 8:00 PM in both KST and IST:

Business between Korea and India

Korean manufacturers have a strong presence in India. Samsung operates a large mobile phone plant near Noida, and Hyundai Motor India builds cars in Chennai. Engineers, purchasing teams and service staff in both countries deal with each other daily and need a reliable overlap.

Because the working days are close, the overlap is long. Korean offices open at about 9 a.m., which is 5:30 a.m. in India, so the shared hours run from the Indian morning to the Korean evening, as the table below shows.

Why India has a half-hour offset

India uses a single time zone for the whole country, based on the 82.5° east meridian. That meridian lies between the 75° and 90° lines that would give whole-hour offsets, so IST sits exactly 5 hours 30 minutes ahead of UTC. Nepal goes a step further, with UTC+05:45.

Because there is no daylight saving time in either country, the same table is valid in January and July. The abbreviation IST also stands for Irish Standard Time and Israel Standard Time, so state "India" whenever the context is not obvious.