얼마나 됐어

how long has it been?

→ 얼마나

phrase Common #2,994

how long has it been? Often asks how much time has passed since something began. 얼마나 되다 can also ask how much or how many, depending on context.

KO: 한국에 온 지 얼마나 됐어?

EN: How long have you been in Korea?

How long has it been?

— 사랑해 줘 사랑해 줘 (2026)

How long have you two been together?

— 폭풍의 시간 (2018)