The Korean Age System, Explained
Written and reviewed by Jun and Jin, native Korean speakers
Published Β· Updated Β· How we write & review
After this page, you can explain why Korean age can differ from your international age, and calculate your own.
10-second answer
The short answer
Traditionally, Korean age counted a newborn as already 1 year old, with everyone gaining a year on New Year's Day (not their birthday). As of June 2023, Korean law switched official and everyday age to the international standard (0 at birth, +1 on your birthday) β but socially, Koreans still ask your age immediately, because age still decides how people speak to each other.
Quick check β did that land?
1. As of June 2023, what is Korea's official/legal age standard?
Wait⦠am I older in Korea?
Three Ways to Count Age
| System | How it counts | Status since 2023 |
|---|---|---|
| λ§ λμ΄ (man nai) β international age | 0 at birth, +1 on each birthday | Now the official/legal standard |
| μΈλ λμ΄ (senneun nai) β Korean age | 1 at birth, +1 for everyone on Jan 1 | Still used very casually in daily speech |
| μ° λμ΄ (yeon nai) β year age | 0 at birth, +1 every Jan 1 (birthday-independent) | Used in some specific laws (e.g. drinking age) |
The old system meant a baby born on December 31st turned "2" the very next day β one of the most-cited quirks of pre-2023 Korean age, and part of why the law changed.
To see all three numbers for your own birthday, use the Korean Age Calculator.
Why the Change Happened
Having three different age systems in daily use caused real confusion β in insurance, medical treatment, contracts, and eligibility ages. In December 2022 South Korea passed a law standardizing official and civil documents on λ§ λμ΄ (international age), and it took effect on June 28, 2023.
This Is Exactly Why μ€λΉ /ν/λλ/μΈλ Exist
This gap β official λ§ λμ΄ on paper, μΈλ λμ΄ still running social life β is the direct reason Korean has a whole vocabulary of age-based address terms instead of just names. Legally, age is now calculated the same way as everywhere else in the world. Socially, it never stopped being the first thing people establish about each other, because so much of how you speak depends on it.
The government changed the NUMBER. It didn't touch the RANKING. Whether someone is older than you by Korean-age counting still decides whether you call them μ€λΉ /ν/λλ/μΈλ, whether you speak λ°λ§ or μ‘΄λλ§, and who pours the drinks β see the kinship terms and honorifics pages for the full system this age-awareness feeds into.
Which word you pick depends on your own gender as well as theirs β μΈλ vs λλ and μ€λΉ vs ν walk through it.
So Why Do Koreans Still Ask Your Age?
Korean social interaction still runs on knowing who's older, because that decides:
- μ‘΄λλ§ vs λ°λ§ β polite or casual speech
- μ€λΉ /ν/λλ/μΈλ vs a plain name
- Who initiates, who pays, who defers in small everyday moments
λμ΄κ° μ΄λ»κ² λμΈμ?
naiga eotteoke doeseyo?
May I ask your age?
Polite phrasing β common early in a new relationship.
λͺ λ μμ΄μΈμ?
myeot nyeonsaeng-iseyo?
What year were you born?
Often preferred over a direct age question β birth year avoids the counting-system ambiguity entirely.
How to Answer as a Foreigner
Since 2023, just give your international (regular) age β that's now the standard everyone uses, Koreans included. If someone insists on comparing 'Korean age,' add a year (or two, if it's currently before their birthday and after New Year's) β but this rarely comes up seriously anymore.
Common Mistakes
Mistake #1 β Thinking the age question is rude
It's functional, not nosy β Korean can't correctly set the speech register without it.
Mistake #2 β Assuming everyone still uses the old +1/+2 system
As of 2023 the international age is standard for virtually everything, including most casual conversation. The +1-at-birth system survives mostly in older habits and specific phrases, not law.
Mini Quiz
2. Why do Koreans still commonly ask your age when meeting you?
3. Why might someone ask λͺ λ μμ΄μΈμ? instead of your exact age?
Related Knowledge
Learn Next
Now that you know why age matters so much, see exactly how it shapes verb endings and titles.
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