YOU SAID:

You have no idea how much you're going to need it.

INTO JAPANESE

どれくらい必要になるかわかりません。

BACK INTO ENGLISH

I don't know how much I'll need.

INTO JAPANESE

どれくらい必要か分かりません。

BACK INTO ENGLISH

I don't know how much I need.

INTO JAPANESE

どれくらい必要か分かりません。

BACK INTO ENGLISH

I don't know how much I need.