Native Korean Numbers and Counters: Count Like a Local
Native Korean numbers 하나, 둘, 셋 pair with counters 개, 명, 잔 — and the first four change shape: 한 개, 두 잔.
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Written by Alvin Lim Certified Korean Language Teacher (Level 2)
Native Korean numbers — 하나, 둘, 셋 — are the numbers Koreans count real things with: cups of coffee, people, animals, and their own age.
Pair them with a small set of counters, apply one shape-change rule, and you can order anything in a café. Prices and dates use the other system, which you met in Lesson 7: sino-Korean numbers.
Native numbers 1–10 (and 20)
Korean runs two number systems side by side. This is the native set — learn it as a chant, the way Korean kids do:
For 11–19, stack onto 열: 열하나 (11), 열둘 (12), 열셋 (13)… You rarely need native numbers beyond the twenties at first, and from 100 the big units (백, 천, 만) are sino.
The shape-change rule: 한, 두, 세, 네
Standing alone, count with the full forms: 하나, 둘, 셋, 넷. The moment a counter follows, five numbers shorten: 한 개 (one thing) · 두 잔 (two cups) · 세 명 (three people) · 네 병 (four bottles) · 스무 살 (twenty years old). Everything else stays put: 다섯 잔, 여섯 개, 열 명. The rule travels into compounds — 열하나 becomes 열한 (열한 살) — and note that only exact twenty becomes 스무: twenty-two is 스물두 살, never 스무두.
The six counters you actually need
A counter is a measure word. English has them for a few nouns — two cups of coffee, three sheets of paper — while Korean uses them for almost everything.
The order is always noun first, then number plus counter:
개 gae — things: 사과 한 개 (one apple) · 명 myeong — people: 학생 두 명 (two students) · 잔 jan — cups and glasses: 커피 세 잔 (three coffees) · 병 byeong — bottles: 물 네 병 (four bottles of water) · 살 sal — years of age: 스무 살 (twenty years old) · 마리 mari — animals: 고양이 두 마리 (two cats)
커피 두 잔 (coffee, two cups) — never 두 커피. To ask how many, swap the number for 몇: 몇 개예요? (how many things?) · 몇 명이에요? (how many people?) · 몇 살이에요? (how old are you?). Answer with a native number: 다섯 개예요, 스무 살이에요.
Native or sino? The one-line cheat
If you can point at the items and count them one by one — apples, people, cats, candles on a cake — it is native + counter.
If you are reading digits off something — a price tag, a phone number, a calendar — it is sino. That is why your age is 스무 살 (native) but the price of the cake is 이만 원 (sino).
The full sino tour, money included, lives in Lesson 7.
Order two coffees
One transaction, both systems: you counted the cups with a native number (두 잔), and the price came back in sino (구천 원). After a week of café visits the split feels automatic.
Two things you will meet immediately in Korea: First, restaurant staff greet you with 몇 분이세요? (how many people?) — 분 is the honorific counter for people, a notch politer than 명.
Second, age comes up early and often; it is not rude, it is how Koreans work out how politely to speak to each other. Since the 2023 law unified age counting, your answer to 몇 살이에요? is simply your real age plus 살: 스물세 살이에요.
⚡ 2-Minute Check
Q 1 / 5Frequently asked questions
Do native Korean numbers go above 99?
In modern Korean, native numbers effectively stop at 99 (아흔아홉). From 100 the big units are sino (백, 천, 만), though the last digits can stay native before a counter (백한 개 = 101 things) — one more reason prices, years, and big quantities all live in the sino system.
Is it 한 개 or 하나 개?
Always 한 개. Five native numbers change shape before a counter: 하나→한, 둘→두, 셋→세, 넷→네, 스물→스무.
Counting with nothing after the number keeps the full forms: 하나, 둘, 셋…
Do Koreans still use “Korean age”?
Officially, no — since June 2023 Korea uses international age (만 나이) by law, so 스무 살 means the same twenty as in your country. You will still hear older speakers add 만 for clarity, and the age question itself (몇 살이에요?
) remains completely normal small talk.