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To count days in Korean, you use the counter 일 (il). It’s used with Sino-Korean numbers to specify the number of days.
Structure: number + counter
How to use 일:
- 일일 (il-il) = one day
- 이일 (i-il) = two days
- 삼일 (sam-il) = three days
Example sentences:
- 여행이 삼일 걸려요. = The trip takes three days.
- 이일 동안 쉬었어요. = I rested for two days.
- 일일만 기다려 주세요. = Please wait for just one day.
When using 일 for counting days, be careful not to confuse it with 일 meaning “work” or “one” (context will clarify the meaning). Always pair Sino-Korean numbers with 일.









