Korean Counter 개: How to Count general objects

Use native Korean numbers with 개 to count apples, eggs, balls.

The Rule

개 is the counter for general objects: apples, eggs, balls. In Korean, you can't just say a number + noun. You MUST use a counter word between them. This is like English "two SHEETS of paper" or "three CUPS of coffee" — except Korean does this for EVERYTHING. Even "three apples" needs a counter: 사과 세 개.

Why English Speakers Get It Wrong

English only uses counters for uncountable nouns ("a glass of water", "a piece of cake"). Korean uses counters for ALL nouns — even ones English counts directly. The second trap: Korean has TWO number systems. 개 uses native Korean (하나, 둘, 셋...) numbers. Using the wrong system is a common mistake that sounds immediately wrong to Korean ears.

How It Works

Pattern: Noun + Number + 개 Native Korean numbers (shortened before counters): 한(1), 두(2), 세(3), 네(4), 다섯(5), 여섯(6), 일곱(7), 여덟(8), 아홉(9), 열(10) Note: 하나→한, 둘→두, 셋→세, 넷→네 when placed before a counter. The counter 개 comes right after the number. The noun can come before or after the number+counter, but before is more natural in conversation.

Real Examples

• 사과 세 개 주세요. (sagwa se gae juseyo.) — "Three apples, please." [세 = native 3] • 달걀 열 개 샀어요. (dargyar yeor gae sateoyo.) — "I bought 10 eggs." [열 = native 10]

Common Mistakes

❌ Using Sino-Korean numbers with 개 ✅ Use native Korean numbers: 사과 세 개 주세요. → 개 always takes native Korean numbers. Mixing number systems is one of the most common counter mistakes. ❌ Saying the number without a counter (e.g., "사과 세") ✅ Always include the counter: 사과 세 개 주세요. → Dropping the counter sounds incomplete in Korean, like saying "three of" without finishing the phrase in English.

Quick Tip

Start with the 5 most common counters: 개 (things), 명 (people), 마리 (animals), 잔 (cups), 병 (bottles). Once these are automatic, add 개 to your toolkit. Practice counting things you see daily: "커피 두 잔", "사람 세 명". The more you use counters in real situations, the faster they become natural.

개 = general objects. Uses native Korean numbers.

Examples

사과 세 개 주세요. — sagwa se gae juseyo. — Three apples, please.

달걀 열 개 샀어요. — dargyar yeor gae sateoyo. — I bought 10 eggs.