〜から
Reason 〜から (because)
Meaning
Gives a reason or cause — "because ~ / since ~". Subjective and conversational. Comes after the reason clause.
Formation
[reason clause] から / [noun / na-adj] だから
Notes
For nouns and na-adjectives, use だから (e.g. 学生だから). For i-adj / verbs, just attach から. The conclusion can come before or after the reason.
Examples
寒（さむ）いですから、家（いえ）にいます。
Because it's cold, I'll stay home.
Breakdown
学生（がくせい）だから、安（やす）いです。
It's cheap because I'm a student. (noun + だから)
Breakdown
明日（あした）テストがあるから、勉強（べんきょう）しなければなりません。
I have a test tomorrow, so I have to study.
Breakdown
時間（じかん）がありませんから、急（いそ）ぎましょう。
We have no time, so let's hurry.
Breakdown
この町（まち）は静（しず）かだから、好（す）きです。
I like this town because it's quiet. (na-adj + だから)
Breakdown
頭（あたま）が痛（いた）いから、今日（きょう）は休（やす）みます。
I have a headache, so I'll take the day off.
Breakdown
⚠️ Often confused with
〜ので
Reason 〜ので (formal because)
A more formal / softer "because" than から. Used in polite speech, business, and writing....
〜以上（は）
Now that 〜以上は
"Now that ~", "since ~" — given this fact, a duty or resolve follows.
〜だけあって
As you would expect 〜だけあって
"As you would expect of ~", "no wonder, given that ~". Admiring.
〜ことから
Judging from 〜ことから
"From the fact that ~", "judging from ~" — states the evidence a conclusion rests on.
〜につき
Due to / per 〜につき
"Due to ~" in official notices; also "per ~" for rates.
〜ゆえ（に）
Owing to (literary) 〜ゆえ（に）
"Because of ~", "owing to ~" — a stiff, literary statement of cause.
〜とあって
Given the occasion 〜とあって
"Because it is (the special occasion of) ~" — a special situation produces a natural resul...
〜ばこそ
It is only because 〜ばこそ
"It is precisely because ~ (and nothing else)" — an emphatic, positive reason.
〜あっての
Made possible only by 〜あっての
"Which exists only thanks to ~", "~ is what makes it possible".
〜手前
With others watching 〜手前
"Since ~ (and with people watching), I have no choice but to ..." — social face forces the...
〜こととて
Seeing that (apologetic) 〜こととて
"Because it is ~ (please excuse it)" — a humble reason offered with an apology.
〜にかこつけて
Under the pretext of 〜にかこつけて
"Using ~ as an excuse", "under the pretext of ~".