When can you come or when you can come which is grammatically correct?

Answer 1

Both are grammatically correct depending on how you are using it.

Ex. "When can you come to my house?" or "When you can come to my house, we will finally be able to play my computer game."

Answer 2

Oh, dude, the correct phrase is "When can you come?" It's like asking someone when they're available, not if they have the ability to come. So, like, if you wanna sound all proper and stuff, go with the first one.

Answer 3

"When can you come?" is the grammatically correct form because in English, the question word typically comes before the verb.