Korean Age Calculator

How to work out your age in Korea

1. Enter the date of birth.
2. The ages are worked out for today. Change "Age on" to see them on another date.
3. Read the international age first, then the counting age and the year age.

Frequently asked questions

Which age is official in Korea?

Since 28 June 2023, laws and official documents use the international age (man-nai), counted in completed years from birth.

What is the counting age?

The traditional Korean age: you are 1 at birth and gain a year every 1 January. It is the current year minus the birth year, plus one.

Where is the year age still used?

Some laws, such as those on military service and on selling alcohol and tobacco to young people, count the current year minus the birth year.