Verbseoul.
하다 verb (adj)

필요하다 conjugation (pilyohada, to have a need)

To say to have a need politely in the present tense, use 필요해요 (pee-ryoh-hae-yoh) · piryohaeyo. Below is the full conjugation of 필요하다 across the three tenses and three everyday speech levels.

Grammar note (하다 verb (adj)): 하다 adjectives use the same verb 하다 as a suffix to turn descriptive nouns into predicates (행복하다 = to be happy). They conjugate identically to 하다 verbs: the 하 contracts before -아/-어 suffixes to give 해. 행복해요, 행복했어요, 행복합니다. See all 하다 verbs →

Conjugation table

pron. = pronunciation guide  · RR = Revised Romanization

Highlighted = where the stem changes

TenseCasual (반말)Polite (요)Formal (합니다)
Present
필요해
pee-ryoh-hae
piryohae
필요해요
pee-ryoh-hae-yoh
piryohaeyo
필요합니다
pee-ryoh-hahm-nee-dah
piryohamnida
Past
필요했어
pee-ryoh-hae-ssuh
piryohaesseo
필요했어요
pee-ryoh-hae-ssuh-yoh
piryohaesseoyo
필요했습니다
pee-ryoh-hae-sseum-nee-dah
piryohaesseumnida
Future
필요할 거야
pee-ryoh-hahl guh-yah
piryohal geoya
필요할 거예요
pee-ryoh-hahl guh-yae-yoh
piryohal geoyeyo
필요할 겁니다
pee-ryoh-hahl guhm-nee-dah
piryohal geomnida

Other useful forms

Honorific / Command Polite (-(으)세요)
필요하세요
pee-ryoh-hah-sae-yoh
piryohaseyo
Suggestion / Let's Polite (요)
필요해요
pee-ryoh-hae-yoh
piryohaeyo
Question Polite (요)
필요해요?
pee-ryoh-hae-yoh-?
piryohaeyo?
Connective "and" — (고)
필요하고
pee-ryoh-hah-goh
piryohago
Conditional "if" — (면)
필요하면
pee-ryoh-hah-myuhn
piryohamyeon
Progressive (고 있어요)
필요하고 있어요
pee-ryoh-hah-goh ee-ssuh-yoh
piryohago isseoyo
Want to (고 싶어요)
필요하고 싶어요
pee-ryoh-hah-goh shee-puh-yoh
piryohago sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
필요할 수 있어요
pee-ryoh-hahl soo ee-ssuh-yoh
piryohal su isseoyo
Because / So (아/어서)
필요해서
pee-ryoh-hae-suh
piryohaeseo
Noun form — (기)
필요하기
pee-ryoh-hah-gee
piryohagi
Noun form — (음)
필요함
pee-ryoh-hahm
piryoham