Age in months

Enter the birth date to get the age in completed months. Months are counted by the same rule as the Korean Ministry of Government Legislation's age calculator: a baby born on 31 January is still 0 months on 28 February and turns 1 month on 1 March.

Values are used on this screen only and are neither sent nor stored.

Birth dateMeasured onLeave empty to use today.

Due date (if born preterm)Fill this in only if the baby was born before the due date. It adds a second set of results based on corrected age.

Where to look next

Vaccination schedules and infant check-up timings are not copied here; the links go to the original pages, which are always current.

Vaccination schedule (KDCA immunisation schedule (Korean))Infant health check-up timing (NHIS infant health check-up schedule (Korean))Ministry of Government Legislation age calculator