Seoul is 4 hours ahead of Karachi for most of the year: when it is 10:00 am in Karachi it is 2:00 pm in Seoul. In offset terms Karachi is on UTC+05:00 and Seoul is on UTC+09:00 in January, and UTC+05:00 and UTC+09:00 in July. The converter above works from your browser’s own time zone data, so the figure it shows is the one in force today rather than the one that was in force when this page was written.
Neither city changes its clocks. Karachi stays on UTC+05:00 and Seoul stays on UTC+09:00 all year. The difference is therefore fixed for all of 2026, which makes this one of the few city pairs where a single number is the whole answer: Seoul is always 4 hours ahead of Karachi. Recurring meetings between the two never drift, and the table below confirms it period by period.
For arranging anything, the number that matters is the overlap. Karachi works 09:00 to 17:00 and Seoul works 09:00 to 18:00, which leaves 09:00 to 14:00 in Karachi — 13:00 to 18:00 in Seoul — as the window when both are open. That is 5 hours of shared working time. Both cities work Monday to Friday, so only the clock has to be reconciled.
Two local details worth knowing. Pakistan keeps UTC+05:00 all year, half an hour behind India, which is the usual source of confusion on regional calls. Korea keeps UTC+09:00 year-round, the same clock as Japan, so the two are interchangeable for scheduling.
Write the invitation in both clocks. "10:00 Karachi / 14:00 Seoul" removes the ambiguity that abbreviations introduce — Karachi alone is read as PKT in winter and PKT in summer, and calendar software will happily convert one into the other without telling you.
The formula
local Karachi- The time you enter, on the Karachi clock
offset- Each city’s UTC offset at that moment, read live from the IANA time zone database in your browser
+4- The difference in hours that holds for most of 2026: Seoul is 4 hours ahead of Karachi
day shift- Whether the converted time falls on the previous, same or next calendar day in Seoul
How it works, step by step
- Enter a time in Karachi using the 24-hour hour box and the minute box — 15:30 is hour 15, minute 30.
- Your browser reports the UTC offset in force in Karachi and in Seoul for that moment, so a date near a daylight saving transition is handled correctly rather than with a fixed 4 hour rule.
- The second offset minus the first gives the difference, which is added to the time you entered. A result past midnight is marked as the next or previous day, because that is where most conversion mistakes live.
- The panel also shows the current time in both cities, the date in Seoul, and whether the two offices are open at the same moment.
Worked examples
09:00 in Karachi
09:00 in Karachi is 13:00 in Seoul — inside Seoul office hours. In 12-hour terms, 9:00 am against 1:00 pm. Both offices are open at that moment, so it is a slot either side can accept.
12:00 in Karachi
12:00 in Karachi is 16:00 in Seoul — inside Seoul office hours. In 12-hour terms, 12:00 pm against 4:00 pm. Both offices are open at that moment, so it is a slot either side can accept.
16:00 in Karachi
16:00 in Karachi is 20:00 in Seoul — after the Seoul working day has finished. In 12-hour terms, 4:00 pm against 8:00 pm. Only one of the two offices is open at that moment, so it is worth offering rather than assuming.
23:00 in Karachi, and the date problem
23:00 in Karachi is 03:00 in Seoul (next day). This is where conversions go wrong in writing: the time is right, the day is not, and a meeting invitation sent for "Tuesday" arrives for the wrong Tuesday. Give the date in both cities whenever the converted time is near midnight.
How to read your score
Frequently asked questions
How many hours ahead of Karachi is Seoul?
Seoul is 4 hours ahead of Karachi for most of 2026, so 09:00 in Karachi is 13:00 in Seoul. That difference holds for the whole year, because the two clocks either never change or change on the same dates — the table on this page confirms it period by period.
What is 2 pm Karachi time in Seoul?
6:00 pm, after the Seoul working day has finished. In 24-hour form 14:00 in Karachi is 18:00 in Seoul, and that is outside working hours in Seoul.
What is the best time to call between Karachi and Seoul?
Anywhere between 09:00 and 14:00 Karachi time, which is 13:00 to 18:00 in Seoul. Both offices are open across that whole window — 5 hours of it. If you want one answer rather than a range, 11:30 in Karachi is the middle of the overlap.
Is Seoul ahead of or behind Karachi?
Seoul is ahead. Karachi is at UTC+05:00 and Seoul is at UTC+09:00 in mid-January, and UTC+05:00 and UTC+09:00 in mid-July. The clock moves forward going from Karachi to Seoul, which is why Seoul reaches the end of its working day first.
Do Karachi and Seoul change their clocks on the same date?
Neither city changes its clocks. In 2026, Karachi does not change its clocks at all, and Seoul does not change its clocks at all. The difference between the two cities therefore holds all year.
What do the abbreviations for Karachi mean?
Karachi is on PKT in winter and PKT in summer, while Seoul uses KST and KST. Abbreviations are the least reliable way to write a time: several are ambiguous between regions, and the summer and winter forms are an hour apart. A UTC offset, or the time given in both cities, cannot be misread.
Does this converter stay correct after the clocks change?
Yes. It does not use a stored number for the difference. Each time you change a value it asks your browser for the UTC offset that Asia/Karachi and Asia/Seoul are on at that moment, using the IANA time zone database that ships with your operating system, and takes the difference. The tables on this page are computed from the same database for 2026.
Karachi to Seoul: every hour, every period of 2026, and meeting slots
| Karachi (24h) | Karachi (12h) | Seoul (24h) | Seoul (12h) | Status |
|---|---|---|---|---|
| 00:00 | 12:00 am | 04:00 | 4:00 am | outside office hours |
| 01:00 | 1:00 am | 05:00 | 5:00 am | outside office hours |
| 02:00 | 2:00 am | 06:00 | 6:00 am | outside office hours |
| 03:00 | 3:00 am | 07:00 | 7:00 am | outside office hours |
| 04:00 | 4:00 am | 08:00 | 8:00 am | outside office hours |
| 05:00 | 5:00 am | 09:00 | 9:00 am | office hours in Seoul |
| 06:00 | 6:00 am | 10:00 | 10:00 am | office hours in Seoul |
| 07:00 | 7:00 am | 11:00 | 11:00 am | office hours in Seoul |
| 08:00 | 8:00 am | 12:00 | 12:00 pm | office hours in Seoul |
| 09:00 | 9:00 am | 13:00 | 1:00 pm | office hours in both |
| 10:00 | 10:00 am | 14:00 | 2:00 pm | office hours in both |
| 11:00 | 11:00 am | 15:00 | 3:00 pm | office hours in both |
| 12:00 | 12:00 pm | 16:00 | 4:00 pm | office hours in both |
| 13:00 | 1:00 pm | 17:00 | 5:00 pm | office hours in both |
| 14:00 | 2:00 pm | 18:00 | 6:00 pm | office hours in Karachi |
| 15:00 | 3:00 pm | 19:00 | 7:00 pm | office hours in Karachi |
| 16:00 | 4:00 pm | 20:00 | 8:00 pm | office hours in Karachi |
| 17:00 | 5:00 pm | 21:00 | 9:00 pm | outside office hours |
| 18:00 | 6:00 pm | 22:00 | 10:00 pm | outside office hours |
| 19:00 | 7:00 pm | 23:00 | 11:00 pm | outside office hours |
| 20:00 | 8:00 pm | 00:00 (next day) | 12:00 am (next day) | outside office hours |
| 21:00 | 9:00 pm | 01:00 (next day) | 1:00 am (next day) | outside office hours |
| 22:00 | 10:00 pm | 02:00 (next day) | 2:00 am (next day) | outside office hours |
| 23:00 | 11:00 pm | 03:00 (next day) | 3:00 am (next day) | outside office hours |
Computed at a difference of 4 hours, which is the one that holds for most of 2026. During the transition windows in the table below, shift the right-hand columns by an hour.
| Period | Length | Karachi offset | Seoul offset | Difference | Abbreviations |
|---|---|---|---|---|---|
| 01 Jan to 31 Dec | 365 days | UTC+05:00 | UTC+09:00 | +4:00 | PKT / KST |
Every row is read from the IANA time zone database. Short periods appear where one city has changed its clocks and the other has not yet done so.
| Karachi | 12-hour | Seoul | Verdict |
|---|---|---|---|
| 06:00 | 6:00 am | 10:00 | Too early in Karachi |
| 06:30 | 6:30 am | 10:30 | Too early in Karachi |
| 07:00 | 7:00 am | 11:00 | Too early in Karachi |
| 07:30 | 7:30 am | 11:30 | Too early in Karachi |
| 08:00 | 8:00 am | 12:00 | Too early in Karachi |
| 08:30 | 8:30 am | 12:30 | Too early in Karachi |
| 09:00 | 9:00 am | 13:00 | Good — both offices open |
| 09:30 | 9:30 am | 13:30 | Good — both offices open |
| 10:00 | 10:00 am | 14:00 | Good — both offices open |
| 10:30 | 10:30 am | 14:30 | Good — both offices open |
| 11:00 | 11:00 am | 15:00 | Good — both offices open |
| 11:30 | 11:30 am | 15:30 | Good — both offices open |
| 12:00 | 12:00 pm | 16:00 | Good — both offices open |
| 12:30 | 12:30 pm | 16:30 | Good — both offices open |
| 13:00 | 1:00 pm | 17:00 | Good — both offices open |
| 13:30 | 1:30 pm | 17:30 | Good — both offices open |
| 14:00 | 2:00 pm | 18:00 | After hours in Seoul |
| 14:30 | 2:30 pm | 18:30 | After hours in Seoul |
| 15:00 | 3:00 pm | 19:00 | After hours in Seoul |
| 15:30 | 3:30 pm | 19:30 | After hours in Seoul |
| 16:00 | 4:00 pm | 20:00 | After hours in Seoul |
| 16:30 | 4:30 pm | 20:30 | After hours in Seoul |
| 17:00 | 5:00 pm | 21:00 | Outside both |
| 17:30 | 5:30 pm | 21:30 | Outside both |
| 18:00 | 6:00 pm | 22:00 | Outside both |
| 18:30 | 6:30 pm | 22:30 | Outside both |
| 19:00 | 7:00 pm | 23:00 | Outside both |
| 19:30 | 7:30 pm | 23:30 | Outside both |
| 20:00 | 8:00 pm | 00:00 (next day) | Outside both |
| 20:30 | 8:30 pm | 00:30 (next day) | Outside both |
| 21:00 | 9:00 pm | 01:00 (next day) | Outside both |
| 21:30 | 9:30 pm | 01:30 (next day) | Outside both |
Office hours taken as 09:00–17:00 in Karachi and 09:00–18:00 in Seoul, which are the customary hours in each city rather than a generic nine to five.