Et voilà ! MEANS : Here you are, Here we are, Here you go... That's it Differents things like that...

Guillaume is right. Can also mean "that's it!", like in "Et voila' pour aujourd'hui!" (That's it for today).

In English (where there are quite a few french words used), "Voila" is used as an exclamatory. Ex) I might do a lengthy maths proof, and at the end, after the final line, with a bit of a flourish, say "and ... voila" meaning "so there!" or "there it is, see ?" A.

Do you know what "Ta Da!" means in English? or 저 전! Well that's what it means.