HSK 5 · Adjectives
必要 bìyào “necessary” in Chinese
Same in Traditional
What 必要 means
- necessary
- essential
- indispensable
- required
How to say 必要
必bì4th tone, falling
要yào4th tone, falling
必要 in a sentence
How 必要 is built
Each colour is one part of the character. Parts repeat across thousands of characters, so learning them makes new words easier. See all 214 in our radicals chart.

必bìcertainly
- 心heart · xīn
- 丿slash · piě

要yàoto want; to need; to ask for
- 覀cover form of 襾 · yà
- 女woman · nǚ
Memory aidOnce drawn as a person with hands on the waist, its first meaning. That meaning moved to 腰 (yāo), and 要 became “to want”.
How to write 必要
必 5 strokes · 要 9 strokes
Watch the order, then press Try writing it and draw each stroke in the grid. Each stroke is checked as you go.

Words related to 必要
Words with 必
必须bìxū · must必然bìrán · inevitable何必hébì · there is no need未必wèibì · not necessarily势必shìbì · bound to务必wùbì · must
Words with 要
不要bùyào · don’t!要yào · want快要kuàiyào · about to需要xūyào · to need要求yāoqiú · to request重要zhòngyào · important主要zhǔyào · main就要jiùyào · about to要是yàoshi · if只要zhǐyào · if only
More words: Adjectives
FAQs
必要 (bìyào) means “necessary” or “essential”. It is an HSK 5 word.
Say it bìyào: bì with a 4th tone, then yào with a 4th tone. Press Listen at the top of this page to hear it, or Slowly to hear each tone clearly.
Yes. 必要 is written the same way in Simplified and Traditional characters.
Add a Chinese (Simplified) pinyin keyboard to your phone or computer, type biyao with no tone marks or spaces, then choose 必要 from the suggestions. Typing biyao into this dictionary’s search box finds it too.
必要 is an HSK 5 word in the HSK 2.0 word lists.
Sources: meaning and pinyin checked by a native Mandarin teacher against the official HSK lists. Extra meanings from CC-CEDICT (CC BY-SA 4.0). Example sentences from Tatoeba (CC BY 2.0 FR). Character parts and stroke order from Make Me a Hanzi.