How old are you?
You meet a Korean person for the first time.
You introduce yourselves, talk for a few minutes—and then comes the question:
“How old are you?”
For people from cultures where age is considered private, this can feel surprisingly direct.
Why does someone you just met need to know your age?
In Korea, the answer has traditionally had less to do with curiosity and more to do with language and relationships.
Korean Changes Depending on Who You Are Talking To
Korean has different levels of politeness.
The way you speak to a close friend may be different from the way you speak to a professor, an older person, a supervisor, or someone you have just met.
Age is not the only factor that determines speech level, but it is an important one.
Knowing someone’s age can help Koreans understand what kind of language feels appropriate.
Should we both continue using polite speech?
Can we eventually speak casually?
Is one person clearly older than the other?
In other words, asking someone’s age traditionally helps define the relationship.
Age Also Changes What You Call People
Korean has several familiar relationship terms that are connected to age.
A younger man may call an older male friend hyeong (형).
A younger woman may call an older female friend eonni (언니).
You may also hear oppa (오빠) and nuna (누나) depending on the gender of the speaker and the older person.
To foreigners, these words can seem like signs of hierarchy.
And yes, age hierarchy has traditionally been an important part of Korean society.
But there is another side to these words.
They can also be signs of closeness.
At first, you may address someone politely by name. Later, after becoming closer, you might begin calling that person hyeong, eonni, oppa, or nuna.
At that point, the word does not simply mean:
“You are older than me.”
It can also mean:
“You are someone close to me.”
Korea Is Changing
Modern Korean society is becoming more flexible.
Younger generations often care less about strict age hierarchy than previous generations did. Some companies encourage employees to use English names or job titles instead of age-based forms of address. Friend groups may also choose to speak casually regardless of small age differences.
Still, age continues to influence Korean language and social relationships in ways that may be unfamiliar to foreigners.
So when a Korean person asks your age, they may not simply be asking for a number.
What they are really trying to figure out may be something closer to:
“How should we speak to each other?”
and perhaps even:
“What kind of relationship are we going to have?”
A practical starting point: keep using polite speech
When you meet someone, you do not need to establish an age ranking before saying hello. Begin with 안녕하세요 and polite endings such as -요. Finding out that someone is younger does not automatically give you permission to use 반말 (casual speech). Familiarity, the setting, the person’s role, and mutual comfort also matter.
For example, a younger teacher is still your teacher, and a younger customer is still a customer. In a class or workplace, use the title or form of address people introduce themselves with. If you are unsure, ask 어떻게 부르면 돼요? — “What should I call you?”
Do 형, 오빠, 누나, and 언니 fit every situation?
These words are used for older siblings and, in suitable relationships, older friends. Traditionally, a male speaker uses 형 for an older male and 누나 for an older female; a female speaker uses 오빠 for an older male and 언니 for an older female. They express a relationship, so they are not general replacements for “sir” or “madam.” Avoid using them for an unfamiliar staff member or teacher simply because the person looks older.
Moving to casual speech is a conversation
A: 우리 말 놓을까요? — Shall we speak casually to each other?
B: 네, 좋아요. — Yes, that sounds good.
Alternative reply: 저는 존댓말이 더 편해요. — I feel more comfortable using polite speech.
The alternative reply is useful when you want to remain friendly while keeping polite speech. Continue using -요 if the other person prefers it. Two people can be close and still use 존댓말; casual speech is not a test of friendship.
Practice choosing a suitable greeting
You are meeting a new instructor whose age you do not know. Compare 안녕! with 안녕하세요, 선생님! Choose 안녕하세요, 선생님! as the polite greeting. The goal is to acknowledge the relationship without guessing the person’s age.
Continue practicing an introduction with 이에요/예요 and learn another everyday expression in “Have you eaten?”.
