Time zone converter
KST to IRST
Convert Korea Time — Seoul to Iran Time — Tehran — fast, accurate, and daylight-saving aware.
When it's 9:00 AM in Seoul, it's 3:30 AM in Tehran. Tehran is 5½ hours behind Seoul. Use the converter above to turn any KST time into IRST, or scan the hour-by-hour table below for the full day.
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Korea Time — Seoul ·
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Iran Time — Tehran ·
Convert a specific timein Seoul → — in Tehran
KST to IRST at a glance
9:00 AM KST
3:30 AM
IRST · Tehran
12:00 PM KST
6:30 AM
IRST · Tehran
5:00 PM KST
11:30 AM
IRST · Tehran
Planning a meeting between Seoul and Tehran
Planning a call between Seoul and Tehran? The best overlap during a standard 9-to-5 workday runs 2:30 PM–5:00 PM KST (9:00 AM–11:30 AM IRST). Aim for that window to reach both sides during business hours.
Hour-by-hour: Seoul to Tehran
A full day mapped from KST to IRST.
Frequently asked
Is Tehran ahead of or behind Seoul?
Tehran is 5½ hours behind Seoul.
What is 12:00 PM KST in IRST?
12:00 PM in Seoul is 6:30 AM in Tehran.
Does this converter account for daylight saving time?
Yes. Conversions use the IANA time zone database, so KST and IRST automatically reflect the correct daylight-saving offset for the current date.