"I want to know if you are free tomorrow."

Translation: Voglio sapere se sei libero domani.

[Viaggiatore]

They're not exactly the same. It's the difference between knowing a fact (sapere) and knowing a person (conoscere). http://my.lifeinitaly.com/threads/5171-conoscere-vs-sapere

[CaraDePauUK]

Why sei and not the subjunctive sia. I tried sia and it said i used the io form sia instead of the tu form sei. This is nonsense, the subjunctive is the same for both is it not?

[AnnaB592696]

I also want to know the answer to why this isn't subjunctive!

[Gleaner3]

Why not the subjunctive in the "se" clause?

[Budd01]

I also would like to know why the subjunctive is not used here.
I believe "voglio sapere se che tu sia disponibile domaini" is a valid translation. It was marked incorrect.

[ackworth]

why is conoscere incorrect?

[sivo64]

Conoscere is used for "know" in the sense of being acquainted with, as in, "I know her", "I know that city". Careful not to use "sapere" with persons, because that would mean you "know" them in a "biblical way".

[SylviaArle1]

Why not "libera", fem.??

[allangottlieb]

Why se and not si: voglio sapere si sei libero domani

[MAUROIJoao]

it is the same concern i have

[Lisa_Kay_]

FYI: "Voglio sapere se domani sei libero." was also accepted.

[emmyllu]

The "correct" answer given is: Voglio sapere se 6 libero domani.

[MouthwashCollins]

voglio sapere se si è liberi di domani

[Mil533515]

MouthwashColins, Was your suggestion marked correct? I had "voglio sapere se liberi domani" but was marked wrong. And I am not sure why not.

[EduardoBud5]

I want to know if free tomorrow??

[Gilly153492]

Why cant you say .....' se tu sei libero' it was marked incorrect?

[alevitzky]

Why is "libere" incorrect?