How to Say ‘Because (it is) / that's why (polite)’ in Japanese
だからです
da kara desu
[dah kah-rah dess]
💬 Usage Tip: [〜だからです] is a clean, polite way to finish a reason. It’s like putting a neat "period" on your explanation.
🇯🇵 In Japan: Japanese interview answers often use a clear "reason → conclusion" structure. Ending with [だからです] sounds tidy and confident.
Phrase Breakdown
だ
da
[dah]
(plain form of です / copula) "is/are"
The plain copula used before connecting expressions like から (because). In set phrases like だから, it helps state a reason.
志望したのは成長できる環境だと思ったからです。
I applied because I thought it was an environment where I can grow.
から
kara
[kah-rah]
because; since
Used to give a reason. Common in interviews when explaining motivation: 「〜からです」 = "It's because..."
この仕事に応募したのは接客が好きだからです。
I applied for this job because I like customer service.
です
desu
[dess]
polite "is/are"; polite sentence ending
Polite ending used in interviews. 「〜からです」 sounds clear and professional when giving reasons.
御社を選んだのは理念に共感したからです。
I chose your company because I empathized with your philosophy.
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