()かる

わかる
verb (godan)
to understand, to know
自動詞 intransitivecognition
Conjugation
AffirmativeNegative
Present()かる()からない
Present polite()かります()かりません
Past()かった()からなかった
Past polite()かりました()かりませんでした
て form()かって()からなくて
ている present()かっている()かっていない
ている polite()かっています()かっていません
ている past()かっていた()かっていなかった
ている past polite()かっていました()かっていませんでした
Conditional ば()かれば()からなければ
Conditional たら()かったら()からなかったら
Volitional()かろう
Volitional polite()かりましょう
Potential()かれる()かれない
Passive()かられる()かられない
Causative()からせる()からせない
Imperative()かれ()かるな
1. to understand, to comprehend
To grasp the meaning of something. Used for understanding language, concepts, feelings, or situations.
()かった。
Got it.
日本語(にほんご)()かる?
Do you understand Japanese?
意味(いみ)()かりません。
I don't understand the meaning.
よく()からないけどやってみる
I don't really understand, but I'll try.
I didn't understand even after hearing the explanation, so I asked again.
2. to know, to recognize
To be able to identify or distinguish something. (ちが)いが()かる (to know the difference).
(ちが)()かる。
I can tell the difference.
(かお)()れば()かる。
I can tell by looking at your face.
(こえ)()かった。
I recognized the voice.
Few people can appreciate how delicious this dish is.
If you know someone for a long time, you come to understand their true personality.
3. to be found out, to become clear
For something to be discovered or determined. 結果(けっか)()かる (the results become known).
結果(けっか)()かる。
The results are known.
原因(げんいん)()かった。
The cause was found.
名前(なまえ)()かりました
Did you find out the name?
調(しら)べれば()かる
If you look it up, you'll find out.
It will take about a week until the test results are known.

Transitivity

自動詞(じどうし) (intransitive). No pair verb. The thing understood takes , not : 日本語(にほんご)()かる, 意味(いみ)()かる. ()かる describes a state that arises in the understander, not an action performed on the thing understood.

ASPECT (ている):
()かった — past form — is the normal way to say "I understand" or "got it": it marks the moment the understanding arrived. ()かっている is the ongoing state of already knowing, and directed at someone else it can sound reproachful ("I know that already"). よく()からない is the standard hedge for "I'm not really sure."

Common patterns

COMPARED WITH ():
() is taking in a piece of information; ()かる is grasping what something means or how it works. Asked a question you cannot answer, ()らない can sound curt or uninterested, while ()かりません is the safe polite reply. 理解(りかい)する is the formal written counterpart of sense 1.

Writing

Godan verb; te-form ()かって. Standard spelling ()かる; also written (わか)る or (わか)る, and very often simply in kana as わかる.