필요하다

to be necessary, to be needed

Principal parts

관형사형Modifier
필요한
아/어Infinitive
필요해
-으니Since
필요하니
합니다Formal
필요합니다

Present

해요체Polite합니다체Formal해체Casual한다체Plain
서술Statement 필요해요필요합니다필요해필요하다

Past

해요체Polite합니다체Formal해체Casual한다체Plain
서술Statement 필요했어요필요했습니다필요했어필요했다

Future & presumptive

해요체Polite합니다체Formal해체Casual한다체Plain
-겠-Will / must be 필요하겠어요필요하겠습니다필요하겠어필요하겠다
-을 것이다Going to 필요할 거예요필요할 것입니다필요할 거야필요할 것이다

Questions

해요체Polite합니다체Formal해체Casual한다체Plain
현재Present 필요해요?필요합니까?필요해?필요하니?
과거Past 필요했어요?필요했습니까?필요했어?필요했니?

Negation

해요체Polite합니다체Formal해체Casual한다체Plain
안Not (short) 안 필요해요안 필요합니다안 필요해안 필요하다
-지 않다Not (long) 필요하지 않아요필요하지 않습니다필요하지 않아필요하지 않다

Honorific

해요체Polite합니다체Formal해체Casual한다체Plain
현재Present 필요하세요필요하십니다필요하셔필요하시다
과거Past 필요하셨어요필요하셨습니다필요하셨어필요하셨다

Modifying a noun

현재Present
필요한
과거Past
필요한
미래Future
필요할
회상Used to
필요하던

Joining clauses

-고and
필요하고
-게-ly / so that
필요하게
-어서so / and then
필요해서
-으니까since
필요하니까
-으면if / when
필요하면
-지만but
필요하지만
-는데and / but (setting up)
필요한데
-어도even if
필요해도

Sentence patterns

In real sentences

더필요한거 있으세요?

Anything else?

학교가 필요한 이유죠.

This is where school comes in.

전 그런 게 필요하니까요.

Because I want it.

우리가 필요한 건 우리가 사서 쓸 수 있다.

We can pay for our own resources.

Common questions

How do you conjugate 필요하다 in Korean?

필요하다 (to be necessary, to be needed) is 필요해요 in the polite 해요체, 필요합니다 in formal 합니다체, 필요해 in casual 반말 and 필요하다 in the plain written style. The past is 필요했어요.

What is the past tense of 필요하다?

필요했어요 in everyday polite speech, 필요했습니다 formally. It is built from the 아/어 form 필요하여 plus ㅆ, which is why an irregular stem shows its irregularity here.

Is 필요하다 irregular?

Yes — it is 여 irregular (여 불규칙). 하다 and every verb built on it: 하다 → 하여 → 해요. That is why the stem looks different in 필요하여 and 필요하니 but unchanged in 필요합니다.

What TOPIK level is 필요하다?

1급 — TOPIK 1, beginner.

Dictionary form, meaning, sentence patterns, examples and audio from the 국립국어원 한국어기초사전, used under CC BY-SA 2.0 KR.

Conjugations are generated by this site's own engine and checked against the 9,380 forms the dictionary publishes on every build.