Check the exact interval in years, months, days, and counted days under Korean Civil Act rules.
Use this when you already know both dates and want to see the Korean-law interval between them.
Enter the dates and period
to see the result
All results are reference information based on general principles of the Korean Civil Act. Actual legal effect and deadline outcomes can vary depending on the facts, special agreements, and other applicable statutes. Consult a qualified professional before relying on the result for an important legal action.
The calculator follows the calendar-based approach commonly associated with Article 160 of the Korean Civil Act. It shows both the counted days and the interval broken down into years, months, and days.
This setting decides whether the first day is counted as part of the period. Under the Korean Civil Act, excluding the first day is the default baseline, but inclusion can still matter where the period starts at midnight or the parties agreed otherwise.
If the target month has no matching calendar day, the calculator follows the Korean Civil Act approach of using the last day of that month.
Under Article 157 of the Korean Civil Act, periods stated in days, weeks, months, or years generally start from the next day. Day-one inclusion can still apply in narrower situations, such as a period that begins at 0:00.
Article 159 treats the period as expiring when the last day ends. Weeks, months, and years are counted on a calendar basis under Article 160.
Under Article 161, if the last day falls on a Saturday or Korean public holiday, the deadline can move to the next business day.
The calculator shows both the counted days and the calendar breakdown so you can compare a simple day count with a calendar-based legal interval.
If you enter the later date first, the calculator automatically reorders the dates so the interval can still be measured correctly.