How to Say ‘I'll let you know when it's done.’ in Japanese
終わったら連絡するよ。
owatsu tara renraku suru yo
[oh-waht tah-rah ren-rah-koo soo-roo yoh]
💬 Usage Tip: This combines two very common patterns: [終わったら] = "when it's done," and [連絡する] = "contact/let someone know." You can swap the first part easily: [着いたら連絡するよ] = "I'll let you know when I arrive."
Phrase Breakdown
終わったら
owatsu tara
when it's finished; after it finishes
Conditional form meaning 'after finishing' or 'when done.'
仕事が終わったら帰ります。
I'll go home after work is finished.
Words in this phrase
終わっ
owatsu
[oh-waht]
finished; ended
From 終わる, meaning to finish or end. This form connects to たら for when/if it finishes.
終わったら連絡するよ。
When I'm done, I'll contact you.
たら
tara
[tah-rah]
if; when
A conditional ending meaning if or when after something happens.
終わったら連絡するよ。
When I'm done, I'll contact you.
連絡するよ
renraku suru yo
I'll contact you; I'll let you know
Casual promise or assurance to get in touch.
あとで連絡するよ。
I'll contact you later.
Words in this phrase
連絡
renraku
[ren-rah-koo]
contact; message
A noun meaning contact or communication. With する, it becomes the verb to contact.
終わったら連絡するよ。
When I'm done, I'll contact you.
する
suru
[soo-roo]
to do
A very common verb meaning to do. It also combines with nouns to make verbal expressions.
終わったら連絡するよ。
When I'm done, I'll contact you.
よ
yo
[yoh]
you know; I tell you; emphasis particle
A sentence-ending particle that adds emphasis or gives information confidently.
終わったら連絡するよ。
When I'm done, I'll contact you.
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