Korean Age Calculator
Korean age counts a person as one year old at birth, and everyone gains a year each January 1. International age counts the full years since the birth date.
- Free
- Works offline after your first visit
- Saves on this device
- No sign-up
- Updated
How it works
Traditional Korean age is the year of the date minus the birth year, plus one.
International age is the year of the date minus the birth year, then minus one more if the birthday has not come yet that year.
Worked example
Born on 1990-06-15, on 2026-11-05 you are 37 by Korean age and 36 by international age.
Questions
Why is Korean age higher than my age?
Korean age starts at one at birth and rises every January 1, so it is usually one or two years more than international age.
Which age is used in Korea today?
Korea moved its legal counting to international age in 2023. Many people still use Korean age in everyday talk.
Can I check a future date?
Yes. Change the date to see both ages on that day, such as a future birthday.
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