Korean military discharge date calculator
Enter an enlistment date and branch to see the expected discharge date for South Korean mandatory military service, the days remaining, days served, and progress. Service lengths follow the Military Manpower Administration: Army and Marine Corps 18 months, Navy 20 months, Air Force 21 months, and social service personnel 21 months.
Copy the result link to share the countdown with family and friends.
How to use
- Pick the enlistment date.
- Choose the branch or social service.
- Check the reference date. It starts as today.
- Read the discharge date, days remaining, days served, and progress.
How it works
Service lengths follow the Military Manpower Administration: Army and Marine Corps 18 months, Navy 20 months, Air Force 21 months, and social service personnel 21 months.
Service starts at midnight on the enlistment date, so that date counts as day 1. Under Article 160 of the Korean Civil Act, a period in months ends on the day before the matching date in the final month, or on the last day of that month if no matching date exists.
Total days run from the enlistment date through the discharge date. Progress is days served by the reference date divided by total days.
Example
Enlisting in the Army on March 15, 2026 gives a discharge date of September 14, 2027 and 549 total days. On the enlistment day, 1 day is served and D-548 remain.
Enlisting in the Army on August 31, 2026: February 2028 has no 31st, so the discharge date is the last day of that month, February 29, 2028.
Good to know
- Results are estimates. Time not counted toward service, early discharge, or extensions change the actual date.
- Supplementary service types such as full-time reserve, alternative service (36 months), and industrial or research personnel are not included.
- Service lengths can change with the law. Check the Military Manpower Administration for current rules.
Frequently asked questions
How is the discharge date calculated?
Count the service months on the calendar from the enlistment date. Service ends on the day before the same date in the final month. Enlisting in the Army on March 15, 2026 means discharge on September 14, 2027.
What if the enlistment date is the 31st?
If the final month has no matching date, service ends on the last day of that month, following Article 160 of the Korean Civil Act. Enlisting in the Army on August 31, 2026 gives February 29, 2028.
Can the real date be different?
Yes. Time not counted toward service, early discharge, or extensions can change it. The unit or the Military Manpower Administration has the official date.
Sources
Last updated: 2026-10-29