How to Say ‘Since when?’ in Japanese
いつから？
itsu kara
[eetsoo kah-rah]
💬 Usage Tip: [いつから？] is literally "from when?" and naturally means "since when?" or "starting when?" The same pattern works with other question words too, like [どこから？] = "from where?".
Phrase Breakdown
いつ
itsu
[eetsoo]
when
いつ asks “when?” and is often paired with から to ask from what time.
いつから始まりますか。
When does it start?
から
kara
[kah-rah]
from; since
から gives the idea of a starting point. In いつから, it means “from when?”
いつから忙しいですか。
Since when have you been busy?
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