Korean Counter 시간: How to Count hours (duration)

Use native Korean numbers with 시간 to count study time, waiting time.

The Rule

시간 is the counter for hours (duration): study time, waiting time. 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. 시간 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 + 시간 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 시간 comes right after the number. The noun can come before or after the number+counter, but before is more natural in conversation.

Real Examples

• 세 시간 기다렸어요. (se sigan gidaryeoteoyo.) — "I waited for 3 hours." [세 = native 3. Duration, not clock time] • 두 시간 반 걸려요. (du sigan ban georryeoyo.) — "It takes 2.5 hours." [반 = half]

Common Mistakes

❌ Using Sino-Korean numbers with 시간 ✅ Use native Korean numbers: 세 시간 기다렸어요. → 시간 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: 세 시간 기다렸어요. → 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 시간 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.

시간 = hours (duration). Uses native Korean numbers.

Examples

세 시간 기다렸어요. — se sigan gidaryeoteoyo. — I waited for 3 hours.

두 시간 반 걸려요. — du sigan ban georryeoyo. — It takes 2.5 hours.