Days left
547Discharge Date Calculator | Days Left and Promotion Dates
Pick an enlistment date and service type to see the discharge date, days left, progress, and expected promotion dates for every Korean service type.
How to use
Service type
Pick the service type.
Enlistment date
Enter the enlistment date; leave the base date as today.
Results
Read the discharge date, progress, promotions, and milestones.
When to use this
Discharge date = enlistment date + service months − 1 day.
Planning school or job timelines before enlistment
Counting down for a friend or family member in service
Noting expected promotion dates
Service periods
Source: Military Manpower Administration open data (as of 2025-12-31).
| Type | Months |
|---|---|
| Army · Marines · Full-time reserve | 18 |
| Navy | 20 |
| Air Force · Social service | 21 |
| Industrial (supplementary) | 23 |
| Industrial (active) · Arts & sports | 34 |
| Research · Public health · Alternative | 36 |
Frequently asked questions
How is the discharge date calculated?
Add the service months to the enlistment date and subtract one day.
How long is Korean military service?
Army and Marines 18 months, Navy 20, Air Force 21. Social service is 21 months.